Project 1: Hydroponics: Growing Plants without Soil
Here are the 30 MCQs with their correct answers.
- The term “hydroponics” is derived from Greek words that mean:
a) Water and work
b) Soil and food
c) Light and growth
d) Air and life
Answer: a) Water and work - Hydroponics is best described as:
a) Growing plants only in sand
b) Growing plants in nutrient-rich water instead of soil
c) Growing plants only in open fields
d) Growing plants without water
Answer: b) Growing plants in nutrient-rich water instead of soil - One major reason for promoting hydroponics in India is:
a) Increase in snowfall
b) Abundance of unused forests
c) Soil degradation and loss of fertile land
d) Lack of plant seeds
Answer: c) Soil degradation and loss of fertile land - In India, soil degradation affects nearly:
a) 3% of Total Geographical Area
b) 13% of Total Geographical Area
c) 33% of Total Geographical Area
d) 53% of Total Geographical Area
Answer: c) 33% of Total Geographical Area - Sustainable farming mainly aims to:
a) Maximize use of chemical fertilizers
b) Produce healthy food with minimal environmental damage
c) Reduce food production
d) Eliminate use of water in agriculture
Answer: b) Produce healthy food with minimal environmental damage [attached_file:file:1] - Hydroponics is often called a “precision farming technique” because:
a) It uses only one type of crop
b) Nutrients are given in precise amounts through water
c) It does not require any planning
d) It uses only rainwater
Answer: b) Nutrients are given in precise amounts through water [attached_file:file:1] - Vertical farming in hydroponics helps mainly to:
a) Reduce the number of plants
b) Increase land requirement
c) Produce more food in less horizontal space
d) Eliminate the need for light
Answer: c) Produce more food in less horizontal space [attached_file:file:1] - Which of the following is an example of “urban farming”?
a) Growing crops in deserts
b) Growing crops in cities using hydroponics
c) Growing crops on mountain peaks
d) Growing crops only in forests
Answer: b) Growing crops in cities using hydroponics [attached_file:file:1] - Which of these is NOT listed as a possible growth medium in hydroponics?
a) Coco peat
b) Gravel
c) Rockwool
d) Pure plastic beads
Answer: d) Pure plastic beads [attached_file:file:1] - In hydroponics, physical support to plants is usually provided by:
a) Roots directly in soil
b) Floating sheets or net pots
c) Hanging roots in air without support
d) Only wooden sticks
Answer: b) Floating sheets or net pots [attached_file:file:1] - Microgreens are best described as:
a) Fully mature trees
b) Young seedlings harvested soon after first 2–4 leaves appear
c) Seeds before germination
d) Flowers just before blooming
Answer: b) Young seedlings harvested soon after first 2–4 leaves appear [attached_file:file:1] - Microgreens are generally harvested when they are about:
a) 1–2 mm tall
b) 1–3 inches (about 5–7 cm) tall
c) 30–40 cm tall
d) 1 metre tall
Answer: b) 1–3 inches (about 5–7 cm) tall [attached_file:file:1] - Compared to sprouts, microgreens are usually:
a) Grown without light and with roots eaten
b) Grown with light and eaten without roots
c) Grown underground
d) Grown only in fields
Answer: b) Grown with light and eaten without roots [attached_file:file:1] - Which of the following is commonly used to grow microgreens?
a) Flat tray with soil or cocopeat
b) Deep pond
c) Metal drum filled with stones
d) Closed plastic bottle without holes
Answer: a) Flat tray with soil or cocopeat [attached_file:file:1] - In the wick method, the main role of the wick is to:
a) Provide light to plants
b) Carry water from the reservoir to the growth medium
c) Supply carbon dioxide
d) Heat the water
Answer: b) Carry water from the reservoir to the growth medium [attached_file:file:1] - In a simple wick hydroponic system, PET bottles are mainly used as:
a) Seed storage boxes
b) Water reservoir and planter structure
c) Soil testing containers
d) Compost makers
Answer: b) Water reservoir and planter structure [attached_file:file:1] - One advantage of the wick system is that it:
a) Requires no water at all
b) Does not need pumps or electrical gadgets
c) Needs very high electricity use
d) Can only be used in large farms
Answer: b) Does not need pumps or electrical gadgets [attached_file:file:1] - In Deep Water Culture (DWC) systems, plant roots are:
a) Kept in dry sand
b) Suspended in standing water with nutrients
c) Kept only in air
d) Buried deep in soil
Answer: b) Suspended in standing water with nutrients [attached_file:file:1] - In a DWC system, an aerator mainly helps to:
a) Increase temperature of water
b) Reduce the amount of oxygen in water
c) Add dissolved oxygen for healthy root growth
d) Remove all microbes from water
Answer: c) Add dissolved oxygen for healthy root growth [attached_file:file:1] - A sign of unhealthy roots in DWC is that they are:
a) White and firm
b) Light green
c) Brown and possibly oxygen-starved
d) Transparent
Answer: c) Brown and possibly oxygen-starved [attached_file:file:1] - In the Nutrient Film Technique (NFT), plant roots are:
a) Completely buried in soil
b) Kept in a thin flowing stream of nutrient solution
c) Kept dry on the surface
d) Suspended in still water only
Answer: b) Kept in a thin flowing stream of nutrient solution [attached_file:file:1] - A key difference between DWC and NFT systems is that NFT:
a) Always uses soil as medium
b) Uses a continuously flowing thin film of water, reducing need for an aerator
c) Needs deeper water than DWC
d) Cannot be stacked vertically
Answer: b) Uses a continuously flowing thin film of water, reducing need for an aerator [attached_file:file:1] - In an NFT system made with PVC pipes, holes in the pipe are mainly for:
a) Allowing sunlight to enter water
b) Planting net pots with plants
c) Letting water leak out freely
d) Filling soil inside the pipe
Answer: b) Planting net pots with plants [attached_file:file:1] - “Compost tea” is:
a) Tea made for human drinking
b) Liquid manure prepared by soaking compost in water with aeration
c) Only solid compost in bags
d) Plain water without nutrients
Answer: b) Liquid manure prepared by soaking compost in water with aeration [attached_file:file:1] - Jaggery or sugar is added while making compost tea mainly to:
a) Colour the water
b) Act as food for microbes in compost
c) Kill all microbes
d) Remove nutrients from compost
Answer: b) Act as food for microbes in compost [attached_file:file:1] - A good quality compost tea usually:
a) Has dark brown colour and earthy smell
b) Smells very foul and rotten
c) Is colourless like pure water
d) Has bright blue colour
Answer: a) Has dark brown colour and earthy smell [attached_file:file:1] - The pH range most suitable for nutrient mobility in hydroponic water is:
a) 1.0 to 2.0
b) 3.0 to 4.0
c) 6.0 to 7.0
d) 9.0 to 10.0
Answer: c) 6.0 to 7.0 [attached_file:file:1] - If the pH of hydroponic water is higher than 7, the water is:
a) Neutral
b) Acidic
c) Alkaline
d) Distilled
Answer: c) Alkaline [attached_file:file:1] - To reduce a high pH in hydroponic water, one generally adds:
a) A weak acid like vinegar or citric acid
b) More plain soil
c) A strong base only
d) Cooking oil
Answer: a) A weak acid like vinegar or citric acid [attached_file:file:1] - In the context of hydroponic water, DO stands for:
a) Dissolved Oxygen
b) Direct Output
c) Daily Observation
d) Double Overflow
Answer: a) Dissolved Oxygen [attached_file:file:1]
Project 2: Feeding and Caring for Farm Animals
Here are 30 MCQ objective questions with answers
- “Work with Wheels” mainly focuses on:
a) Air travel systems
b) Water transport only
c) Wheeled vehicles and their working
d) Satellite communication
Answer: c) Wheeled vehicles and their working [attached_file:file:1] - The main idea of the unit is to:
a) Memorise traffic rules only
b) Understand how wheel-based systems work and how to use them safely
c) Learn only about animal carts
d) Design computer games
Answer: b) Understand how wheel-based systems work and how to use them safely [attached_file:file:1] - A “simple machine” is a device that:
a) Always uses electricity
b) Makes work easier by changing the direction or amount of force
c) Always increases speed
d) Works only with fuel
Answer: b) Makes work easier by changing the direction or amount of force [attached_file:file:1] - The wheel in a bicycle helps mainly to:
a) Produce electricity
b) Reduce friction and help movement
c) Absorb sunlight
d) Store food
Answer: b) Reduce friction and help movement [attached_file:file:1] - The system that links the pedals to the rear wheel in a bicycle is the:
a) Brake system
b) Steering system
c) Chain and sprocket system
d) Cooling system
Answer: c) Chain and sprocket system [attached_file:file:1] - In a cycle, when you press the brake lever:
a) The chain stops
b) Brake shoes press against the rim or disc to slow the wheel
c) The handle gets locked
d) The tyre punctures
Answer: b) Brake shoes press against the rim or disc to slow the wheel [attached_file:file:1] - The “steering system” of a bicycle mainly includes:
a) Pedals and chain
b) Handlebar and front fork
c) Seat and carrier
d) Tyre and tube
Answer: b) Handlebar and front fork [attached_file:file:1] - A cycle rickshaw is an example of:
a) Motorised transport
b) Animal-drawn transport
c) Non-motorised, human-powered transport
d) Air transport
Answer: c) Non-motorised, human-powered transport [attached_file:file:1] - The main advantage of non-motorised transport like bicycles is that it:
a) Uses petrol
b) Produces no direct air pollution
c) Always moves faster than cars
d) Needs complex engines
Answer: b) Produces no direct air pollution [attached_file:file:1] - The “brake shoe” in a rim-brake cycle is usually covered with:
a) Metal only
b) A rubber-like material for friction
c) Glass
d) Cloth
Answer: b) A rubber-like material for friction [attached_file:file:1] - In a gear bicycle, gears are mainly used to:
a) Change the colour of the cycle
b) Change effort and speed by varying gear combinations
c) Only increase weight
d) Reduce the size of wheels
Answer: b) Change effort and speed by varying gear combinations [attached_file:file:1] - While riding a bicycle, which of the following is a safe practice?
a) Using a mobile phone while cycling
b) Wearing a helmet and following traffic rules
c) Riding in the opposite direction of traffic
d) Carrying more passengers than allowed
Answer: b) Wearing a helmet and following traffic rules [attached_file:file:1] - A “bearing” in a wheel assembly mainly helps to:
a) Store oil
b) Reduce friction between moving parts
c) Change colour of the rim
d) Pump air into the tyre
Answer: b) Reduce friction between moving parts [attached_file:file:1] - Tyres are usually filled with air to:
a) Increase weight
b) Provide cushioning and better grip
c) Stop the cycle from moving
d) Help in steering only
Answer: b) Provide cushioning and better grip [attached_file:file:1] - A handcart used by street vendors is generally:
a) Air transport
b) Rail transport
c) Human-powered wheeled transport
d) Motorised heavy transport
Answer: c) Human-powered wheeled transport [attached_file:file:1] - A key safety rule while crossing a road is to:
a) Run without looking
b) Use the zebra crossing and check both sides
c) Stand in the middle of the road
d) Follow vehicles closely
Answer: b) Use the zebra crossing and check both sides [attached_file:file:1] - Reflectors on bicycles are mainly used to:
a) Show speed
b) Hold the chain
c) Increase visibility in low light
d) Measure tyre pressure
Answer: c) Increase visibility in low light [attached_file:file:1] - An example of motorised road transport is:
a) Bullock cart
b) Bicycle
c) Auto-rickshaw
d) Hand-pulled cart
Answer: c) Auto-rickshaw [attached_file:file:1] - In a motorbike, power from the engine is transmitted to the rear wheel usually through:
a) A chain drive
b) A hand lever only
c) A rope
d) A simple rod
Answer: a) A chain drive [attached_file:file:1] - The main purpose of traffic signals is to:
a) Decorate the road
b) Control movement of vehicles and pedestrians safely
c) Show petrol prices
d) Indicate shop timings
Answer: b) Control movement of vehicles and pedestrians safely [attached_file:file:1] - Overloading a vehicle is unsafe because it:
a) Makes the vehicle look bigger
b) Reduces control and can damage brakes and tyres
c) Improves mileage
d) Makes steering easier
Answer: b) Reduces control and can damage brakes and tyres [attached_file:file:1] - A “pneumatic tyre” is a tyre that:
a) Is solid rubber without air
b) Uses air under pressure inside
c) Is made only of metal
d) Is used only in trains
Answer: b) Uses air under pressure inside [attached_file:file:1] - The part of the bicycle that the rider sits on is called the:
a) Handle
b) Pedal
c) Saddle or seat
d) Axle
Answer: c) Saddle or seat [attached_file:file:1] - A “chassis” in a vehicle refers to:
a) Only the wheels
b) Decorative stickers
c) The main frame that supports other parts
d) The engine oil
Answer: c) The main frame that supports other parts [attached_file:file:1] - Which of the following is a good maintenance practice for bicycles?
a) Never cleaning the chain
b) Regularly oiling the chain and checking brakes
c) Removing reflectors
d) Over-inflating tyres till they are very hard
Answer: b) Regularly oiling the chain and checking brakes [attached_file:file:1] - One advantage of using public transport like buses is that it:
a) Increases traffic jams
b) Carries many people at once, reducing per-person pollution
c) Always takes longer routes
d) Is only for students
Answer: b) Carries many people at once, reducing per-person pollution [attached_file:file:1] - The “axle” in a wheel assembly is the part that:
a) Covers the tyre
b) Connects the wheel to the frame and allows rotation
c) Holds the seat
d) Keeps the handle straight
Answer: b) Connects the wheel to the frame and allows rotation [attached_file:file:1] - A person walking on foot on the road is called a:
a) Driver
b) Passenger
c) Pedestrian
d) Mechanic
Answer: c) Pedestrian [attached_file:file:1] - A good cycling habit when riding in a group is to:
a) Block the entire road
b) Ride in a single line and keep safe distance
c) Race with moving cars
d) Ignore traffic signals
Answer: b) Ride in a single line and keep safe distance [attached_file:file:1] - For short distances inside a school campus, the most sustainable transport option is usually:
a) Car
b) Motorbike
c) Walking or cycling
d) Truck
Answer: c) Walking or cycling [attached_file:file:1]
Part 2: Work with Machines and Materials
Project 3: Working with Wood and Bamboo
Here are 30 MCQ objective questions with answers
- “Working with Wood and Bamboo” mainly focuses on:
a) Growing plants
b) Making useful objects from natural materials
c) Studying only forests
d) Only using metal tools
Answer: b) Making useful objects from natural materials [attached_file:file:2] - Wood and bamboo are described as “indispensable” because they are:
a) Used only in villages
b) Rarely found
c) Used in many everyday objects like doors, benches, bats, toys
d) Used only as fuel
Answer: c) Used in many everyday objects like doors, benches, bats, toys [attached_file:file:2] - Padmanabhapuram Palace is an example of:
a) A glass building
b) One of Asia’s largest wooden palaces
c) A concrete skyscraper
d) An iron fort
Answer: b) One of Asia’s largest wooden palaces [attached_file:file:2] - Wood is considered a renewable resource because:
a) It can never be exhausted
b) Trees can be planted again to replace those cut
c) It is made in factories
d) It does not burn
Answer: b) Trees can be planted again to replace those cut [attached_file:file:2] - Using wood becomes unsustainable when:
a) Only old trees are used
b) Consumption is less than planting
c) Consumption exceeds the number of new trees planted
d) Wood is used only for furniture
Answer: c) Consumption exceeds the number of new trees planted [attached_file:file:2] - Engineered wood like plywood and MDF is usually made from:
a) Solid metal blocks
b) Recycled wood, sawdust and wood fibres
c) Only bamboo leaves
d) Only plastic
Answer: b) Recycled wood, sawdust and wood fibres [attached_file:file:2] - Bamboo is botanically classified as:
a) A hardwood tree
b) A shrub
c) A perennial grass
d) A herb
Answer: c) A perennial grass [attached_file:file:2] - In India, bamboo grows in many parts of the country, with maximum growth in:
a) Western deserts
b) North-eastern states
c) Coastal Gujarat
d) Himalayan glaciers
Answer: b) North-eastern states [attached_file:file:2] - Softwood is generally preferred for students’ first carpentry projects because it:
a) Is very heavy and hard
b) Is easier to cut, shape and finish
c) Cannot be scratched
d) Is more expensive
Answer: b) Is easier to cut, shape and finish [attached_file:file:2] - The “fingernail test” helps to:
a) Measure thickness of wood
b) Test if wood is wet or dry
c) Distinguish between softwood and hardwood
d) Find the age of the tree
Answer: c) Distinguish between softwood and hardwood [attached_file:file:2] - In the fingernail test, if pressing the thumbnail leaves a scratch mark, the wood is likely:
a) Hardwood
b) Softwood
c) Metal
d) Plastic
Answer: b) Softwood [attached_file:file:2] - Examples of hardwood mentioned include:
a) Pine and deodar
b) Babool and mango
c) Eucalyptus and bamboo
d) MDF and plywood
Answer: b) Babool and mango [attached_file:file:2] - Pine and deodar wood are commonly used for:
a) Ships and bridges
b) Lightweight furniture and packing boxes
c) Weapons only
d) Paper making only
Answer: b) Lightweight furniture and packing boxes [attached_file:file:2] - Teak (Sagwan) wood is especially used for:
a) Paper pulp
b) Temporary shelters only
c) Building ships and outdoor furniture
d) Making only toys
Answer: c) Building ships and outdoor furniture [attached_file:file:2] - One key learning outcome of this project is to:
a) Memorise tree names only
b) Safely use tools like hammer and saw to cut, join and assemble materials
c) Work only with machines
d) Avoid using any tools
Answer: b) Safely use tools like hammer and saw to cut, join and assemble materials [attached_file:file:2] - Basic tools required for woodworking include:
a) Microscope and test tubes
b) Tri-square, hand saw, wood file, plane, hammer, measuring tape
c) Only paint and brush
d) Only computer and printer
Answer: b) Tri-square, hand saw, wood file, plane, hammer, measuring tape [attached_file:file:2] - For safety while woodworking, students should:
a) Work barefoot
b) Ignore wood dust
c) Use masks and safety goggles to protect from dust
d) Keep tools scattered on the floor
Answer: c) Use masks and safety goggles to protect from dust [attached_file:file:2] - “Fasteners” are:
a) Only decorative pieces
b) Nails, screws, nuts and bolts used to join parts
c) Types of sandpaper
d) Types of wood polish
Answer: b) Nails, screws, nuts and bolts used to join parts [attached_file:file:2] - Before fixing a screw into wood, it is helpful to:
a) Hit it directly with a hammer
b) Heat it on a flame
c) Make a small dent and use a screwdriver
d) Soak it in water
Answer: c) Make a small dent and use a screwdriver [attached_file:file:2] - Hinges are used in wooden products mainly to:
a) Fix glass
b) Allow movement like opening and closing doors or lids
c) Change colour of wood
d) Measure length
Answer: b) Allow movement like opening and closing doors or lids [attached_file:file:2] - A butt joint in wood is:
a) A joint with overlapping pieces
b) A joint where straight edges meet at corners
c) A joint with a hole and pin
d) A flexible rope joint
Answer: b) A joint where straight edges meet at corners [attached_file:file:2] - A lap joint is one where:
a) Pieces are joined at 45° only
b) Pieces overlap with one sitting on top of the other
c) Pieces are never in contact
d) Only glue is used
Answer: b) Pieces overlap with one sitting on top of the other [attached_file:file:2] - In a mortise and tenon joint:
a) Two nails cross each other
b) A protruding tenon fits into a mortise slot in another piece
c) Only glue is used
d) Only metal is joined
Answer: b) A protruding tenon fits into a mortise slot in another piece [attached_file:file:2] - A prototype is:
a) The final product sold in the market
b) A random sketch with no measurements
c) The first model of a product to test the design
d) A broken sample
Answer: c) The first model of a product to test the design [attached_file:file:2] - For making a prototype in this project, students are advised to use:
a) Concrete blocks
b) Cardboard or waste softwood
c) Only metal sheets
d) Glass pieces
Answer: b) Cardboard or waste softwood [attached_file:file:2] - One advantage of prototyping is that it:
a) Increases material wastage
b) Makes final work more risky
c) Reduces chances of errors in the actual object
d) Stops creativity
Answer: c) Reduces chances of errors in the actual object [attached_file:file:2] - Sanding is done mainly to:
a) Add weight
b) Smoothen surfaces and edges using sandpaper
c) Cut wood into pieces
d) Paint directly on rough wood
Answer: b) Smoothen surfaces and edges using sandpaper [attached_file:file:2] - Varnish on wood is used to:
a) Make wood dissolve
b) Form a protective, scratch-resistant layer and improve appearance
c) Make wood weaker
d) Remove colour from wood
Answer: b) Form a protective, scratch-resistant layer and improve appearance [attached_file:file:2] - The main useful part of bamboo for making products is the:
a) Flower
b) Root only
c) Culm, which is a hollow cylinder with nodes
d) Fruit
Answer: c) Culm, which is a hollow cylinder with nodes [attached_file:file:2] - In basic costing (Activity 6), to decide the selling price of a product, students must:
a) Only guess the price
b) Ignore material cost
c) Add up material/tool costs and consider labour time
d) Use only market price without calculation
Answer: c) Add up material/tool costs and consider labour time [attached_file:file:2]
Project 4: Home Automation
Here are 30 MCQ objective questions with answers
- Home automation mainly means:
a) Painting houses automatically
b) Using technology to control home devices automatically
c) Building only bigger houses
d) Using only manual switches
Answer: b) Using technology to control home devices automatically [attached_file:file:3] - In an automated classroom with a motion sensor, lights turn off when:
a) The bell rings
b) No motion is detected in the room
c) The windows are opened
d) The fan speed is high
Answer: b) No motion is detected in the room [attached_file:file:3] - An automatic garden irrigation system usually uses a:
a) Light sensor in the roof
b) Moisture sensor in the soil
c) Sound sensor on the gate
d) Temperature sensor in the fan
Answer: b) Moisture sensor in the soil [attached_file:file:3] - One main benefit of an automatic irrigation system is that it:
a) Waters plants all the time
b) Waters plants only when needed, saving water
c) Works only in rainy season
d) Removes soil from pots
Answer: b) Waters plants only when needed, saving water [attached_file:file:3] - Which of the following is given as an example of automation in the human body?
a) Painting nails
b) Heart beating automatically to pump blood
c) Wearing spectacles
d) Cutting hair
Answer: b) Heart beating automatically to pump blood [attached_file:file:3] - In the text, a thermostat is compared to:
a) Shoes
b) Body’s way of regulating temperature by sweating
c) Eyes blinking
d) Nails growing
Answer: b) Body’s way of regulating temperature by sweating [attached_file:file:3] - In the “journey of automation” figure, older timekeeping devices mentioned are:
a) Digital clocks only
b) Water clocks and sundials
c) Mobile phones
d) Smartwatches only
Answer: b) Water clocks and sundials [attached_file:file:3] - In modern times, AI-powered smart cities mainly use AI to manage:
a) Only parks
b) City transport, health and energy
c) Only schools
d) Only sports grounds
Answer: b) City transport, health and energy [attached_file:file:3] - A breadboard is used mainly to:
a) Cut wood
b) Connect electronic components without soldering
c) Measure temperature
d) Store water
Answer: b) Connect electronic components without soldering [attached_file:file:3] - A microcontroller like Arduino Uno is used to:
a) Only store books
b) Control devices like LEDs, buzzers, motors and sensors using programmes
c) Generate mains AC electricity
d) Replace all sensors
Answer: b) Control devices like LEDs, buzzers, motors and sensors using programmes [attached_file:file:3] - In an LED, the longer leg is:
a) Negative (cathode)
b) Positive (anode)
c) Not connected
d) Ground
Answer: b) Positive (anode) [attached_file:file:3] - The LCD mentioned in the text can display:
a) Only one word
b) 16 characters per row and 2 rows
c) Only numbers
d) Only symbols
Answer: b) 16 characters per row and 2 rows [attached_file:file:3] - A buzzer in a circuit is mainly used to:
a) Produce sound for alarms and notifications
b) Store data
c) Measure voltage
d) Show images
Answer: a) Produce sound for alarms and notifications [attached_file:file:3] - Adapters are important in electronics because they:
a) Convert high-voltage AC to low-voltage DC for devices
b) Increase AC voltage
c) Make sound louder
d) Change DC to AC for home mains
Answer: a) Convert high-voltage AC to low-voltage DC for devices [attached_file:file:3] - Jumper wires are used to:
a) Join wooden pieces
b) Connect components on a breadboard without soldering
c) Measure speed
d) Fix tyres
Answer: b) Connect components on a breadboard without soldering [attached_file:file:3] - A Digital Multimeter (DMM) is used to measure:
a) Only speed
b) Voltage, current and resistance in circuits
c) Colour of LEDs
d) Air pressure only
Answer: b) Voltage, current and resistance in circuits [attached_file:file:3] - A motion detection sensor detects:
a) Only light
b) Infrared radiation (heat) from objects like humans and animals
c) Only sound
d) Only voltage changes
Answer: b) Infrared radiation (heat) from objects like humans and animals [attached_file:file:3] - The DHT11 mentioned in the text is a type of:
a) Motion sensor
b) Temperature sensor
c) Light sensor
d) Sound sensor
Answer: b) Temperature sensor [attached_file:file:3] - While working with electronics, beginners are advised to:
a) Connect circuits directly to 230 V AC mains
b) Work only with DC supply like batteries
c) Touch live AC wires
d) Avoid using batteries
Answer: b) Work only with DC supply like batteries [attached_file:file:3] - In circuit symbols, a battery mainly:
a) Limits current
b) Provides electrical energy
c) Acts as a switch
d) Stores sound
Answer: b) Provides electrical energy [attached_file:file:3] - The three key steps of the automation cycle are:
a) Code–compile–run
b) Input (sensing), processing (decision), output (action)
c) Heat–cool–store
d) Draw–decorate–delete
Answer: b) Input (sensing), processing (decision), output (action) [attached_file:file:3] - In the automation example, a motion sensor detecting movement is part of:
a) Output
b) Input (sensing)
c) Storage
d) Decoration
Answer: b) Input (sensing) [attached_file:file:3] - A microcontroller in an automation system mainly performs:
a) Painting
b) Processing and decision-making
c) Mechanical lifting
d) Cooking
Answer: b) Processing and decision-making [attached_file:file:3] - In Arduino Uno, pins labelled 0–13 are:
a) Analog pins
b) Digital pins for on/off signals
c) Power pins only
d) Ground pins
Answer: b) Digital pins for on/off signals [attached_file:file:3] - GND (ground) pin on Arduino is used as:
a) A reference point of voltage and safety path
b) A place to store programmes
c) A reset line only
d) A temperature sensor
Answer: a) A reference point of voltage and safety path [attached_file:file:3] - Tinkercad is used in this project as:
a) A drawing tool for posters only
b) A simulation platform to design and test electronic circuits
c) A video editing app
d) A game engine
Answer: b) A simulation platform to design and test electronic circuits [attached_file:file:3] - In the Blink example on Arduino, students mainly:
a) Print documents
b) Upload a programme to blink an LED on and off
c) Play music
d) Charge a battery
Answer: b) Upload a programme to blink an LED on and off [attached_file:file:3] - In the automatic street light example, the light sensor used is:
a) PIR sensor
b) LDR (light-dependent resistor)
c) DHT11
d) Sound sensor
Answer: b) LDR (light-dependent resistor) [attached_file:file:3] - In the “smart light system” example, the sensor used to detect presence in a room is:
a) Moisture sensor
b) PIR motion sensor
c) Temperature sensor
d) Gas sensor
Answer: b) PIR motion sensor [attached_file:file:3] - To deploy an Arduino-based automation system away from a computer, it should be:
a) Left without power
b) Powered using suitable batteries and connector cables
c) Connected only to AC mains
d) Used only inside a simulator
Answer: b) Powered using suitable batteries and connector cables [attached_file:file:3]
Part 3: Work in Human Services
Project 5: Water Audit for Water Management
Here are 30 MCQ objective questions with answers
- A water audit is mainly a process to:
a) Build new dams
b) Examine water usage and wastage systematically in a building or household
c) Measure only rainfall
d) Clean storage tanks
Answer: b) Examine water usage and wastage systematically in a building or household [attached_file:file:4] - In this project, students primarily learn to:
a) Design dams
b) Collect and analyse data on water use
c) Build motors
d) Manufacture pipes
Answer: b) Collect and analyse data on water use [attached_file:file:4] - Data is best described here as:
a) Only numbers written in notebooks
b) Any information collected for a specific purpose, such as facts, figures, photos, or videos
c) Only photos and videos
d) Only government reports
Answer: b) Any information collected for a specific purpose, such as facts, figures, photos, or videos [attached_file:file:4] - Meteorological departments predict monsoon and cyclones mostly using:
a) Guesswork
b) Past data and observed trends
c) Social media polls
d) Only satellite images without data
Answer: b) Past data and observed trends [attached_file:file:4] - India has about 4% of the world’s freshwater and approximately what percent of the world’s population?
a) 8%
b) 12%
c) 18%
d) 25%
Answer: c) 18% [attached_file:file:4] - Droughts are often seen as natural disasters, but the text highlights they are mainly caused by:
a) Only lack of rain
b) Human activities like deforestation and over-extraction of groundwater
c) Volcanoes
d) Ocean tides
Answer: b) Human activities like deforestation and over-extraction of groundwater [attached_file:file:4] - Leaving a tap running for five minutes can waste approximately:
a) 5 litres
b) 15 litres
c) 25 litres
d) 45 litres
Answer: d) 45 litres [attached_file:file:4] - Jal Jeevan Mission and Jal Shakti Abhiyan are government programmes mainly focused on:
a) Road construction
b) Water access and conservation
c) Building schools
d) Only electricity
Answer: b) Water access and conservation [attached_file:file:4] - Primary data in this project refers to data:
a) Copied from books
b) Collected first-hand by surveys, experiments or observations
c) Always downloaded from the internet
d) Only taken from newspapers
Answer: b) Collected first-hand by surveys, experiments or observations [attached_file:file:4] - Secondary data in this project refers to data:
a) Collected by students in their homes
b) Obtained from reliable sources like government websites and reports
c) Written by friends in WhatsApp chats
d) From any random website without checking
Answer: b) Obtained from reliable sources like government websites and reports [attached_file:file:4] - For household water usage, the most convenient unit is:
a) Milligrams (mg)
b) Millilitres (mL)
c) Litres (L)
d) Kilometres (km)
Answer: c) Litres (L) [attached_file:file:4] - One cubic metre (1 m³) of water is equal to:
a) 10 litres
b) 100 litres
c) 500 litres
d) 1000 litres
Answer: d) 1000 litres [attached_file:file:4] - To measure the flow rate of a tap, students are advised to:
a) Measure air speed near the tap
b) Let water flow into a bucket for one minute and measure volume
c) Measure bucket weight only
d) Ask a neighbour to guess
Answer: b) Let water flow into a bucket for one minute and measure volume [attached_file:file:4] - The formula used to estimate water used from a tap is:
a) Amount used = Flow rate × Time tap is ON
b) Amount used = Flow rate ÷ Time
c) Amount used = Time²
d) Amount used = Flow rate + Time
Answer: a) Amount used = Flow rate × Time tap is ON [attached_file:file:4] - Big storage tanks’ capacity in a locality can be found by:
a) Colour of the tank
b) Calculating volume from dimensions and converting to litres
c) Asking only the watchman without checking
d) Measuring height only
Answer: b) Calculating volume from dimensions and converting to litres [attached_file:file:4] - In this project, one key safety rule while doing surveys is to:
a) Enter houses without permission
b) Always take permission before entering someone’s home or property
c) Work alone at night
d) Ignore slippery areas
Answer: b) Always take permission before entering someone’s home or property [attached_file:file:4] - A household water-use survey (Table 5.1) asks about:
a) Only electricity usage
b) Water used for clothes, utensils, drinking, cooking and bathing
c) Internet data usage
d) Only rainfall in the area
Answer: b) Water used for clothes, utensils, drinking, cooking and bathing [attached_file:file:4] - According to the example, a washing machine typically consumes about:
a) 7 L per cycle
b) 17 L per cycle
c) 70 L per cycle
d) 700 L per cycle
Answer: c) 70 L per cycle [attached_file:file:4] - An RO filter in the example wastes roughly how much water for every 1 litre of treated water?
a) 0.3 L
b) 1 L
c) 2 L
d) 3 L
Answer: d) 3 L [attached_file:file:4] - To analyse family water-use data in Excel, the total water used by a family can be calculated using:
a) =AVERAGE(C2:F2)
b) =SUM(C2:F2)
c) =MULTIPLY(C2:F2)
d) =COUNT(C2:F2)
Answer: b) =SUM(C2:F2) [attached_file:file:4] - The Jal Jeevan Mission’s prescribed water usage (as mentioned) is:
a) 25 L/day rural and 50 L/day urban
b) 55 L/day rural and 135 L/day urban
c) 75 L/day rural and 200 L/day urban
d) 100 L/day both rural and urban
Answer: b) 55 L/day rural and 135 L/day urban [attached_file:file:4] - Check dams help in water conservation mainly by:
a) Increasing speed of water
b) Reducing speed of runoff and holding water in streams
c) Preventing rainfall
d) Removing soil moisture
Answer: b) Reducing speed of runoff and holding water in streams [attached_file:file:4] - Contour bunds built along contour lines are used to:
a) Speed up water runoff
b) Hold water at the same level and reduce soil erosion
c) Grow only trees
d) Store drinking water directly
Answer: b) Hold water at the same level and reduce soil erosion [attached_file:file:4] - Greywater is defined in the text as:
a) Industrial chemical waste water
b) Domestic wastewater from sinks, baths, washing machines and kitchens
c) Pure rainwater
d) Sea water brought inland
Answer: b) Domestic wastewater from sinks, baths, washing machines and kitchens [attached_file:file:4] - One simple way to reuse greywater suggested is:
a) Pour it into rivers directly
b) Use leftover water from washing vegetables for watering plants
c) Store it indefinitely in sealed drums
d) Mix it with petrol
Answer: b) Use leftover water from washing vegetables for watering plants [attached_file:file:4] - In a reed-bed system, plants like Canna indica and Colocasia mainly:
a) Add more pollutants
b) Absorb organic pollutants and heavy metals from greywater
c) Only provide shade
d) Increase speed of water flow
Answer: b) Absorb organic pollutants and heavy metals from greywater [attached_file:file:4] - Flow caps and aerators are devices fitted to taps mainly to:
a) Change water colour
b) Restrict and reduce water flow per minute
c) Increase water wastage
d) Measure pH
Answer: b) Restrict and reduce water flow per minute [attached_file:file:4] - Groundwater recharge structures mentioned include:
a) Only rooftop tanks
b) Percolation tanks, dams and borewell recharge
c) Hand pumps only
d) Sea walls
Answer: b) Percolation tanks, dams and borewell recharge [attached_file:file:4] - In estimating future water requirement, if 100 new homes are built with 4 people each, students are expected to:
a) Ignore extra demand
b) Calculate total new consumers and multiply by average use
c) Only measure rainfall
d) Ask just one family
Answer: b) Calculate total new consumers and multiply by average use [attached_file:file:4] - One “what else can I do?” suggestion after the water audit is to:
a) Stop collecting any data
b) Use programming to help users estimate water requirements and consumption patterns
c) Avoid contacting officials
d) Only study electricity without water
Answer: b) Use programming to help users estimate water requirements and consumption patterns [attached_file:file:4]
Project 6: Creating Advertisements
Here are 30 MCQ objective questions with answers
- The main purpose of an advertisement is to:
a) Record exam marks
b) Persuade people to take action related to a product, service, or social cause
c) Store data safely
d) Teach only school subjects
Answer: b) Persuade people to take action related to a product, service, or social cause [attached_file:file:5] - In this project, students primarily design advertisements for:
a) International companies
b) A small business in their locality
c) Only government schemes
d) Only online apps
Answer: b) A small business in their locality [attached_file:file:5] - The two broad varieties of advertisements mentioned are:
a) Audio and video
b) Print and digital
c) Commercial and social
d) Indoor and outdoor
Answer: c) Commercial and social [attached_file:file:5] - A board outside a shop that describes its products is mainly an example of:
a) Social advertising
b) Commercial advertising
c) Government notification
d) School notice
Answer: b) Commercial advertising [attached_file:file:5] - An example of a social advertisement from the text is:
a) Selling mobile phones
b) Swachh Bharat Mission cleanliness campaign
c) Discount on clothes
d) New restaurant opening
Answer: b) Swachh Bharat Mission cleanliness campaign [attached_file:file:5] - Historically in India, important messages in villages were announced by:
a) Only newspapers
b) Town criers beating drums (dhindhora pitna)
c) Mobile phones
d) Television ads
Answer: b) Town criers beating drums (dhindhora pitna) [attached_file:file:5] - Word-of-mouth advertising is especially common among:
a) Large multinational companies
b) Owners of small businesses, shops and street vendors
c) Only government offices
d) Schools and colleges alone
Answer: b) Owners of small businesses, shops and street vendors [attached_file:file:5] - Social media platforms mentioned as popular for advertising include:
a) Only email
b) Facebook, Instagram, X, etc.
c) Fax
d) Telephones
Answer: b) Facebook, Instagram, X, etc. [attached_file:file:5] - A logo is described as:
a) A long essay about a product
b) A visual element or symbol representing a brand or product
c) A price list
d) A government order
Answer: b) A visual element or symbol representing a brand or product [attached_file:file:5] - A tagline or slogan is:
a) A detailed article
b) A short, memorable phrase representing a brand or product
c) A legal document
d) A secret code
Answer: b) A short, memorable phrase representing a brand or product [attached_file:file:5] - Using the same logo and related taglines across different ads is part of:
a) Taxation
b) Branding
c) Banking
d) Censorship
Answer: b) Branding [attached_file:file:5] - In the polio campaign example, what remains the same across versions?
a) Logo remains same, taglines can change
b) Tagline remains same, logo changes
c) Both change every time
d) Neither logo nor tagline is used
Answer: a) Logo remains same, taglines can change [attached_file:file:5] - Visual design of advertisements generally aims to:
a) Use a lot of text only
b) Be eye‑catching and attractive with minimum but well‑placed text
c) Avoid colours
d) Hide the main message
Answer: b) Be eye‑catching and attractive with minimum but well‑placed text [attached_file:file:5] - Audio and audio‑video advertisements commonly use:
a) Silence only
b) Striking music and catchy jingles
c) Only plain speech without sound
d) Only on‑screen text
Answer: b) Striking music and catchy jingles [attached_file:file:5] - One reason ad durations on TV/radio are kept short is because:
a) Longer ads are free
b) People may get bored or irritated if ads are too long
c) Short ads are illegal
d) Short ads are harder to remember
Answer: b) People may get bored or irritated if ads are too long [attached_file:file:5] - Ads often try to “connect to emotions” so that:
a) Viewers forget the product
b) People recall messages that touch their feelings
c) The ad can be confusing
d) Laws can be avoided
Answer: b) People recall messages that touch their feelings [attached_file:file:5] - “Call to action” in an advertisement means:
a) A phone call to the producer
b) Telling the audience what to do after seeing the ad
c) Asking viewers to switch off the TV
d) Giving exam questions
Answer: b) Telling the audience what to do after seeing the ad [attached_file:file:5] - “Vote now”, “Visit our store today”, “Register for vaccine” are examples of:
a) Logos
b) Taglines only
c) Calls to action
d) Background music
Answer: c) Calls to action [attached_file:file:5] - Ethical advertising in this project specifically asks students to:
a) Copy anything freely from the internet
b) Use original or permitted content and avoid plagiarism
c) Ignore cultural sensitivity
d) Exaggerate benefits falsely
Answer: b) Use original or permitted content and avoid plagiarism [attached_file:file:5] - Fake advertising in the text is described as:
a) Using humour
b) Making false claims about a product or service
c) Using bright colours
d) Using music
Answer: b) Making false claims about a product or service [attached_file:file:5] - One key safety guideline while working with small businesses is to:
a) Visit alone at night
b) Always inform a parent/guardian/teacher and choose public, well‑lit areas
c) Record secretly without telling them
d) Force them to participate
Answer: b) Always inform a parent/guardian/teacher and choose public, well‑lit areas [attached_file:file:5] - Before using someone’s image, music or text, students should:
a) Use it without asking
b) Obtain permission and credit the source
c) Delete their own work
d) Only mention price
Answer: b) Obtain permission and credit the source [attached_file:file:5] - In Activity 1, advertisements are categorised into types such as:
a) Print, social media, radio/TV, outdoor
b) Only outdoor
c) Email and SMS only
d) Posters only
Answer: a) Print, social media, radio/TV, outdoor [attached_file:file:5] - A hoarding on a roadside building is mainly an example of:
a) Print ad in a book
b) Outdoor advertising
c) Radio advertising
d) Social media post
Answer: b) Outdoor advertising [attached_file:file:5] - When students identify a “client” for their ad, they usually pick:
a) Large national TV channels
b) Local small businesses like bakers, tailors, diya sellers
c) Only government ministries
d) Only online gaming companies
Answer: b) Local small businesses like bakers, tailors, diya sellers [attached_file:file:5] - The simple written agreement between students and a business owner is mainly to:
a) Fix product prices
b) Clarify permissions, roles, and interaction conditions
c) Decide school exam marks
d) Approve government schemes
Answer: b) Clarify permissions, roles, and interaction conditions [attached_file:file:5] - To understand the business, students are advised to ask about:
a) Product nature, uniqueness, price range and most‑selling items
b) Only the owner’s hobbies
c) Only their favourite films
d) Only shop colour
Answer: a) Product nature, uniqueness, price range and most‑selling items [attached_file:file:5] - “Target audience” of an advertisement refers to:
a) People who design the ad
b) The group of people the ad is meant to influence
c) Only shopkeepers
d) Only students
Answer: b) The group of people the ad is meant to influence [attached_file:file:5] - Posters are described as:
a) The simplest form of advertisement used to convey a message at a glance
b) Very complex 3D models
c) Only online files
d) Legal contracts
Answer: a) The simplest form of advertisement used to convey a message at a glance [attached_file:file:5] - In the review stage, one key criterion to judge the advertisement is:
a) Length of script only
b) Creativity, clarity of message, and visual appeal
c) Number of difficult words
d) Amount of homework given
Answer: b) Creativity, clarity of message, and visual appeal [attached_file:file:5]