✅ True or False (10 Questions)

(CBSE Class 8 Standard | Good Quality)

1. Health means only the absence of disease.
   False
   (Health includes physical, mental and social well-being.) hecu103

2. According to WHO, health is a state of complete well-being.
   True hecu103

3. Excessive screen time can affect mental and physical health.
   True hecu103

4. Communicable diseases do not spread from one person to another.
   False
   (They spread through pathogens.) hecu103

5. Non-communicable diseases are caused by pathogens like bacteria and viruses.
   False
   (They are usually linked to lifestyle and environment.) hecu103

6. Mosquitoes act as vectors in spreading diseases like malaria and dengue.
   True hecu103

7. Vaccines help train the immune system to fight harmful germs.
   True hecu103

8. Antibiotics are effective in treating viral infections like common cold.
   False
   (Antibiotics work only against bacteria.) hecu103

9. Maintaining hygiene and clean surroundings helps prevent diseases.
   True hecu103

10. Antibiotic resistance develops due to misuse and overuse of antibiotics.
    True

✅ Fill in the Blanks (10 Questions)

(CBSE Class 8 Standard | Good Quality)

1. According to WHO, health is a state of complete physical, mental and __________ well-being.
   Answer: social hecu103

2. Diseases that spread from one person to another are called __________ diseases.
   Answer: communicable hecu103

3. Disease-causing microorganisms are known as __________.
   Answer: pathogens hecu103

4. Malaria is spread by the bite of a female __________ mosquito.
   Answer: Anopheles hecu103

5. Dengue is a disease transmitted by __________ mosquito.
   Answer: Aedes hecu103

6. The body’s defence system against infections is called the __________ system.
   Answer: immune hecu103

7. __________ help in preventing diseases by developing immunity.
   Answer: Vaccines hecu103

8. Antibiotics are used to treat __________ infections.
   Answer: bacterial hecu103

9. The improper use of antibiotics leads to antibiotic __________.
   Answer: resistance hecu103

10. A balanced diet, exercise and hygiene are important for a healthy __________.
    Answer: lifestyle

✅ Multiple Choice Questions (15 MCQs)

(CBSE Class 8 Standard | Good Quality)

1. According to WHO, health is:

A. Only absence of disease
B. Complete physical well-being only
C. Complete physical, mental and social well-being
D. Only mental fitness
✅ Answer: C hecu103

2. Diseases that spread from one person to another are called:

A. Non-communicable diseases
B. Communicable diseases
C. Genetic diseases
D. Lifestyle diseases
✅ Answer: B hecu103

3. Disease-causing microorganisms are known as:

A. Nutrients
B. Pathogens
C. Vitamins
D. Hormones
✅ Answer: B hecu103

4. Malaria is transmitted by:

A. Housefly
B. Anopheles mosquito
C. Aedes mosquito
D. Rat
✅ Answer: B hecu103

5. Dengue is spread by:

A. Aedes mosquito
B. Anopheles mosquito
C. Ticks
D. Snakes
✅ Answer: A hecu103

6. Which of the following is a non-communicable disease?

A. Tuberculosis
B. Malaria
C. Diabetes
D. Cholera
✅ Answer: C hecu103

7. The immune system helps the body to:

A. Digest food
B. Fight infections
C. Produce heat
D. Store energy
✅ Answer: B hecu103

8. Vaccines are used to:

A. Cause diseases
B. Develop immunity
C. Increase weight
D. Reduce hunger
✅ Answer: B hecu103

9. Antibiotics are effective against:

A. Viruses
B. Bacteria
C. Dust
D. Water
✅ Answer: B hecu103

10. Misuse of antibiotics leads to:

A. Stronger immunity
B. Antibiotic resistance
C. Better digestion
D. Faster growth
✅ Answer: B hecu103

11. Which is a vector-borne disease?

A. Cancer
B. Malaria
C. Diabetes
D. Asthma
✅ Answer: B hecu103

12. Which of these helps in maintaining good health?

A. Balanced diet
B. Regular exercise
C. Hygiene
D. All of these
✅ Answer: D hecu103

13. The best way to prevent communicable diseases is:

A. Ignoring symptoms
B. Maintaining hygiene
C. Eating junk food
D. Avoiding sleep
✅ Answer: B hecu103

14. Antibiotics should be taken:

A. Without doctor’s advice
B. Only for bacterial infections
C. For viral infections
D. Daily as vitamins
✅ Answer: B hecu103

15. Health is considered the ultimate:

A. Problem
B. Treasure
C. Disease
D. Burden
✅ Answer: B

✅ Assertion–Reason Questions (10)

(CBSE Class 8 Standard | Good Quality)

Directions: Choose the correct option:

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

1.

Assertion (A): Health includes physical, mental and social well-being.
Reason (R): WHO defines health as a state of complete well-being.
✅ Answer: A hecu103

2.

Assertion (A): Communicable diseases can spread from one person to another.
Reason (R): They are caused by pathogens like bacteria and viruses.
✅ Answer: A hecu103

3.

Assertion (A): Malaria is a vector-borne disease.
Reason (R): It spreads through the bite of Anopheles mosquito.
✅ Answer: A hecu103

4.

Assertion (A): Antibiotics cannot cure viral infections.
Reason (R): Antibiotics act only against bacteria.
✅ Answer: A hecu103

5.

Assertion (A): Vaccines help in preventing diseases.
Reason (R): Vaccines develop immunity in the body.
✅ Answer: A hecu103

6.

Assertion (A): Hygiene helps prevent communicable diseases.
Reason (R): Clean surroundings reduce the spread of pathogens.
✅ Answer: A hecu103

7.

Assertion (A): Dengue is transmitted by Aedes mosquito.
Reason (R): Aedes mosquito breeds in stagnant clean water.
✅ Answer: B hecu103

8.

Assertion (A): Antibiotic resistance is a serious health problem.
Reason (R): Misuse of antibiotics makes bacteria resistant to medicines.
✅ Answer: A hecu103

9.

Assertion (A): Balanced diet and exercise are important for good health.
Reason (R): Healthy lifestyle strengthens the immune system.
✅ Answer: A hecu103

10.

Assertion (A): Non-communicable diseases do not spread by contact.
Reason (R): They are often related to lifestyle or genetic factors.
✅ Answer: A

✅ Very Short Answer Questions (10 Questions)

(2 Marks Each | CBSE Class 8 Standard | Good Quality)

1. Define health according to WHO.

Answer:
According to WHO, health is a state of complete physical, mental and social well-being and not merely the absence of disease. hecu103

2. What are pathogens?

Answer:
Pathogens are disease-causing microorganisms such as bacteria, viruses, fungi, and protozoa. hecu103

3. What are communicable diseases?

Answer:
Communicable diseases are diseases that spread from one person to another through air, water, food, or vectors. hecu103

4. Give one example of a non-communicable disease.

Answer:
Diabetes or cancer is an example of a non-communicable disease. hecu103

5. Name the mosquito that spreads malaria.

Answer:
Malaria is spread by the bite of female Anopheles mosquito. hecu103

6. What is immunity?

Answer:
Immunity is the ability of the body to fight against infections and protect itself from diseases. hecu103

7. What is the role of vaccines?

Answer:
Vaccines help the body develop immunity by training the immune system to fight harmful pathogens. hecu103

8. Why are antibiotics used?

Answer:
Antibiotics are used to kill or stop the growth of bacteria and treat bacterial infections. hecu103

9. What is antibiotic resistance?

Answer:
Antibiotic resistance is a condition in which bacteria become resistant to antibiotics due to misuse or overuse of these medicines. hecu103

10. Mention one way to maintain good health.

Answer:
Eating a balanced diet, exercising regularly, maintaining hygiene, and getting proper sleep help maintain good health.

✅ Short Answer Questions (10 Questions)

(3 Marks Each | CBSE Class 8 Standard | Good Quality)

1. Explain the importance of health in our life.

Answer:
Health is the ultimate treasure because it allows us to live happily and perform daily activities efficiently. Good health includes physical fitness, mental peace, and social well-being. Without health, we cannot enjoy life properly. hecu103

2. Differentiate between communicable and non-communicable diseases.

Answer:
Communicable diseases spread from one person to another through pathogens, such as malaria and tuberculosis. Non-communicable diseases do not spread by contact and are often related to lifestyle or genetic factors, such as diabetes and cancer. hecu103

3. How do vector-borne diseases spread? Give examples.

Answer:
Vector-borne diseases spread through carriers like mosquitoes and flies. These vectors transmit pathogens from infected to healthy persons. Examples include malaria and dengue. hecu103

4. What is the role of the immune system in our body?

Answer:
The immune system protects the body by fighting harmful pathogens. It produces antibodies and prevents infections. It also helps in developing immunity through vaccination. hecu103

5. Why is hygiene important for preventing diseases?

Answer:
Hygiene prevents the growth and spread of pathogens. Clean surroundings, washing hands, and safe drinking water reduce the chances of communicable diseases like cholera and typhoid. hecu103

6. What are vaccines? How do they work?

Answer:
Vaccines are substances that help the body develop immunity. They contain weakened or dead pathogens that stimulate the immune system to produce antibodies, protecting against future infections. hecu103

7. Why should antibiotics be taken only on doctor’s advice?

Answer:
Antibiotics should be taken only when needed because misuse can lead to antibiotic resistance. Overuse makes bacteria resistant, reducing the effectiveness of medicines in future. hecu103

8. What is antibiotic resistance? Why is it dangerous?

Answer:
Antibiotic resistance occurs when bacteria become immune to antibiotics. It is dangerous because infections become harder to treat, leading to longer illness and increased risk of spread. hecu103

9. Mention three ways to maintain a healthy lifestyle.

Answer:
A healthy lifestyle can be maintained by:

• Eating a balanced diet
• Exercising regularly
• Maintaining hygiene and proper sleep hecu103

10. Why is prevention better than cure?

Answer:
Prevention is better than cure because preventing diseases through hygiene, vaccination, and healthy habits is easier, cheaper, and safer than treating diseases after they occur.

✅ Case-Based Questions (4 Cases)

(4 Marks Each | Sub-questions: 1 + 1 + 2 Marks)
CBSE Competency-Based Standard

Case 1: Health and Well-being

Ravi believes that health means only not being sick. His teacher explains that health includes physical fitness, mental peace, and social well-being.

Questions:

Q1. (1 Mark) According to WHO, health includes physical, mental and ______ well-being.
Answer: Social hecu103

Q2. (1 Mark) Is absence of disease the only condition for good health?
Answer: No hecu103

Q3. (2 Marks) Why is health considered a complete state of well-being?
Answer:
Because health includes physical fitness, mental stability, and good social relationships, not just absence of illness. hecu103

Case 2: Spread of Communicable Diseases

During the rainy season, cases of malaria and dengue increase. Mosquitoes breed in stagnant water and spread these diseases.

Questions:

Q1. (1 Mark) Name one mosquito-borne disease.
Answer: Malaria / Dengue hecu103

Q2. (1 Mark) What are disease-spreading organisms like mosquitoes called?
Answer: Vectors hecu103

Q3. (2 Marks) Mention two preventive measures to control mosquito-borne diseases.
Answer:
Remove stagnant water, use mosquito nets/repellents, and keep surroundings clean. hecu103

Case 3: Vaccination and Immunity

A child receives vaccines at an early age. Vaccination helps the immune system fight infections effectively.

Questions:

Q1. (1 Mark) What is the body’s defence system called?
Answer: Immune system hecu103

Q2. (1 Mark) Vaccines help develop ______ in the body.
Answer: Immunity hecu103

Q3. (2 Marks) How do vaccines protect us from diseases?
Answer:
Vaccines stimulate the immune system to produce antibodies, helping the body fight future infections. hecu103

Case 4: Misuse of Antibiotics

Many people take antibiotics even for viral infections like cold. Doctors warn that this can cause antibiotic resistance.

Questions:

Q1. (1 Mark) Antibiotics are effective against ______ infections.
Answer: Bacterial hecu103

Q2. (1 Mark) What problem develops due to misuse of antibiotics?
Answer: Antibiotic resistance hecu103

Q3. (2 Marks) Why is antibiotic resistance dangerous?
Answer:
It makes bacterial infections difficult to treat because antibiotics become ineffective, increasing health risks.

✅ Long Answer Questions (5 Questions)

(5 Marks Each | CBSE Class 8 Standard | High Quality Answers)

1. Define health according to WHO. Explain why health is called the ultimate treasure.

Answer:
According to WHO, health is a state of complete physical, mental, and social well-being and not merely the absence of disease.

Health is called the ultimate treasure because:

• It helps us live a happy and active life.
• A healthy person can work efficiently.
• Good health gives mental peace and strong immunity.
• Without health, wealth and success have no value.

Thus, health is the greatest asset of life. hecu103

2. Differentiate between communicable and non-communicable diseases with examples.

Answer:

Feature	Communicable Diseases	Non-Communicable Diseases
Spread	Spread from person to person	Do not spread by contact
Cause	Caused by pathogens	Caused by lifestyle/genetic factors
Examples	Malaria, Dengue, TB	Diabetes, Cancer

Communicable diseases can be prevented through hygiene and vaccination, while non-communicable diseases require healthy lifestyle habits. hecu103

3. Explain how vector-borne diseases spread and how they can be prevented.

Answer:
Vector-borne diseases spread through carriers called vectors such as mosquitoes and flies. These vectors carry pathogens from infected persons to healthy persons.

Examples:

• Malaria (Anopheles mosquito)
• Dengue (Aedes mosquito)

Prevention:

• Remove stagnant water
• Use mosquito nets and repellents
• Keep surroundings clean
• Spray insecticides

Thus, controlling vectors helps prevent many diseases. hecu103

4. What are vaccines? Explain their role in developing immunity.

Answer:
Vaccines are substances containing weakened or dead pathogens that help the body develop immunity.

Role of vaccines:

• They stimulate the immune system.
• The body produces antibodies against the pathogen.
• Memory cells are formed to fight future infections.

Thus, vaccines protect us from serious diseases and help control epidemics. hecu103

5. Explain antibiotic resistance and why antibiotics should be used carefully.

Answer:
Antibiotic resistance occurs when bacteria become resistant to antibiotics due to misuse or overuse of these medicines.

Causes:

• Taking antibiotics without doctor’s advice
• Not completing the full course
• Using antibiotics for viral infections

Why it is dangerous:

• Infections become difficult to treat
• Medicines become ineffective
• Risk of spreading resistant bacteria increases

Thus, antibiotics must be used only when prescribed.