The chapter 3 of Class 8 Science, Health: The Ultimate Treasure is all about health, what it means and how it is more than about body. In this chapter, we will learn how mind and social well-being are more important than body. It explains different types of diseases, how infections spread, and how cleanliness, vaccines, and healthy habits help us stay safe.
This set of MCQs and match-the-following questions will make revision easy. The questions mentioned below cover all important topics from the chapter. Lets now start solving these questions and make your preparation smooth.
Do check Class 8 Science MCQ Questions and Answers.
Class 8 Science Chapter 3 MCQ Online Test Questions and Answers
Question 1. According to the WHO, health is best defined as:
a) Only the absence of disease
b) Complete physical well-being only
c) Complete physical, mental, and social well-being
d) The ability to do physical work
Answer:
c) Complete physical, mental, and social well-being
Question 2. A person who is physically fit but feels lonely and mentally stressed is:
a) Completely healthy
b) Not fully healthy
c) Suffering from a communicable disease
d) Always infected by pathogens
Answer:
b) Not fully healthy
Question 3. Which of the following is most closely related to social well-being?
a) Having strong relationships with others
b) Having strong muscles
c) Having low fever
d) Having sharp eyesight
Answer:
a) Having strong relationships with others
Question 4. Ayurveda says that true health depends on balance of:
a) Food, clothes, and books
b) Body, mind, and surroundings
c) Height, weight, and age
d) Work, games, and sleep only
Answer:
b) Body, mind, and surroundings
Question 5. Following dinacharya and ritucharya mainly helps a person to:
a) Memorise more facts
b) Maintain balance in life
c) Avoid all diseases permanently
d) Increase height quickly
Answer:
b) Maintain balance in life
Question 6. Which of the following is a healthy habit according to the chapter?
a) Skipping breakfast
b) Sleeping very late every day
c) Exercising regularly
d) Spending too much time on screens
Answer:
c) Exercising regularly
Question 7. Which habit is identified as harmful to health in the chapter?
a) Eating a balanced diet
b) Relaxing or meditating daily
c) Spending too much time on mobile phones
d) Playing outdoors
Answer:
c) Spending too much time on mobile phones
Question 8. A balanced diet should include plenty of:
a) Processed and sugary drinks
b) Fruits, vegetables, and whole grains
c) Only fats and oils
d) Junk food and cold drinks
Answer:
b) Fruits, vegetables, and whole grains
Question 9. Which of the following is suggested to help the body and mind rest and recover?
a) More screen time
b) Less sleep
c) Enough sleep
d) Skipping meals
Answer:
c) Enough sleep
Question 10. Which practice is specifically mentioned as helpful for relaxation and well-being?
a) Only gym training
b) Pranayama and yoga
c) Eating fast food
d) Avoiding outdoor games
Answer:
b) Pranayama and yoga
Question 11. The chapter advises students to say “NO” to harmful substances like:
a) Fruits and grains
b) Tobacco, alcohol, and addictive drugs
c) Milk and curd
d) Exercise and sports
Answer:
b) Tobacco, alcohol, and addictive drugs
Question 12. A polluted playground full of flies and mosquitoes is unhealthy mainly because it is:
a) Too colourful
b) Unhygienic and disease-prone
c) Too quiet
d) Too large
Answer:
b) Unhygienic and disease-prone
Question 13. In cities, air pollution from vehicles and factories may cause problems like:
a) Better appetite
b) Coughing or asthma
c) Improved immunity
d) Faster healing
Answer:
b) Coughing or asthma
Question 14. The Air Quality Index (AQI) helps us know:
a) How much rain will fall
b) How clean the air is
c) How many people are healthy
d) How much water is in rivers
Answer:
b) How clean the air is
Question 15. A symptom is best described as something that:
a) Can only be measured by instruments
b) We feel, like pain or tiredness
c) Is always seen on the skin
d) Appears only in communicable diseases
Answer:
b) We feel, like pain or tiredness
Question 16. A sign is best described as something that:
a) Only the patient feels
b) Cannot be measured
c) Can be seen or measured, like fever
d) Happens only during injury
Answer:
c) Can be seen or measured, like fever
Question 17. A disease is a condition that affects the normal working of the:
a) Body only
b) Mind only
c) Body or mind
d) Skin only
Answer:
c) Body or mind
Question 18. Disease-causing organisms such as bacteria, viruses, fungi, worms, and protozoa are called:
a) Nutrients
b) Pathogens
c) Vaccines
d) Antibodies
Answer:
b) Pathogens
Question 19. Which of the following is a non-communicable disease?
a) Typhoid
b) Chickenpox
c) Diabetes
d) Measles
Answer:
c) Diabetes
Question 20. Communicable diseases can spread from one person to another because they are caused by:
a) Lack of sleep only
b) Pathogens
c) Sadness and worry only
d) Exercise
Answer:
b) Pathogens
Question 21. Which of the following diseases is spread through air?
a) Cholera
b) Dengue
c) Measles
d) Diabetes
Answer:
c) Measles
Question 22. Which disease listed in the chapter is caused by bacteria and affects the lungs?
a) Tuberculosis
b) Dengue
c) Hepatitis A
d) Chickenpox
Answer:
a) Tuberculosis
Question 23. Which disease is caused by a virus and affects the liver?
a) Cholera
b) Hepatitis A
c) Ascariasis
d) Malaria
Answer:
b) Hepatitis A
Question 24. Cholera and typhoid commonly spread through:
a) Mosquito bites
b) Contaminated food and water
c) Loud noise
d) Dust in the air
Answer:
b) Contaminated food and water
Question 25. Ascariasis is caused by:
a) Virus
b) Bacteria
c) Worms
d) Protozoa
Answer:
c) Worms
Question 26. Malaria is caused by:
a) Bacteria
b) Virus
c) Fungus
d) Protozoa
Answer:
d) Protozoa
Question 27. Mosquitoes and houseflies that spread pathogens are called:
a) Hosts
b) Vectors
c) Carriers of oxygen
d) Nutrient agents
Answer:
b) Vectors
Question 28. Which of the following is an important precaution to prevent infectious diseases?
a) Sharing towels and handkerchiefs
b) Washing hands with soap and water
c) Ignoring cough and fever
d) Drinking unboiled water
Answer:
b) Washing hands with soap and water
Question 29. Which statement about deficiency diseases is correct?
a) They are caused by bacteria
b) They are always spread by air
c) They are caused by lack of specific nutrients
d) They are caused only by viruses
Answer:
c) They are caused by lack of specific nutrients
Question 30. Diseases such as diabetes, cancer, and asthma that may persist for more than three months are called:
a) Seasonal diseases
b) Chronic diseases
c) Vector-borne diseases
d) Deficiency diseases only
Answer:
b) Chronic diseases
Question 31. Immunity is the:
a) Ability of the body to digest all foods
b) Natural ability of the body to fight diseases
c) Method of treating wounds
d) Use of medicines to reduce fever
Answer:
b) Natural ability of the body to fight diseases
Question 32. Vaccines are called preventive and not curative because they:
a) Cure all diseases instantly
b) Prevent disease before it occurs but do not treat it after a person is sick
c) Work only on adults
d) Are used only in hospitals
Answer:
b) Prevent disease before it occurs but do not treat it after a person is sick
Question 33. Antibiotics are effective mainly against:
a) Viral infections
b) Bacterial infections
c) Protozoan infections only
d) All kinds of infections
Answer:
b) Bacterial infections
Question 34. One major danger of indiscriminate use of antibiotics is:
a) Better immunity in all cases
b) Antibiotic resistance in bacteria
c) Instant cure of viral diseases
d) Elimination of all pathogens
Answer:
b) Antibiotic resistance in bacteria
Question 35 – Match the Following
| Column A | Column B |
|---|---|
| 1. Symptom | A. Something seen or measured |
| 2. Sign | B. Something felt by the patient |
| 3. Pathogen | C. Disease-causing organism |
| 4. Vector | D. Insect that spreads pathogens |
| 5. Immunity | E. Ability of the body to fight disease |
Answer:
| Column A | Correct Answer |
|---|---|
| 1. Symptom | B. Something felt by the patient |
| 2. Sign | A. Something seen or measured |
| 3. Pathogen | C. Disease-causing organism |
| 4. Vector | D. Insect that spreads pathogens |
| 5. Immunity | E. Ability of the body to fight disease |
Question 36 – Match the Following
| Column A | Column B |
|---|---|
| 1. Malaria | A. Bacterial infection of lungs |
| 2. Tuberculosis | B. Spread through contaminated food and water |
| 3. Cholera | C. Protozoan disease spread by mosquitoes |
| 4. Vaccine | D. Prevents serious infectious diseases |
| 5. Antibiotic | E. Medicine used against bacterial infection |
Answer:
| Column A | Correct Answer |
|---|---|
| 1. Malaria | C. Protozoan disease spread by mosquitoes |
| 2. Tuberculosis | A. Bacterial infection of lungs |
| 3. Cholera | B. Spread through contaminated food and water |
| 4. Vaccine | D. Prevents serious infectious diseases |
| 5. Antibiotic | E. Medicine used against bacterial infection |
