CBSE Class 8 Science Health The Ultimate Treasure (Class 8 NCERT New) Quiz 2

1. A student scores well in academics, exercises regularly, and has no illness. However, after shifting to a new city, the student avoids interacting with classmates, feels lonely, and remains anxious most of the time. Which statement best describes the student's health?

A The student is healthy because there is no disease. B The student is unhealthy because only mental health is affected. C The student is not completely healthy because health includes physical, mental, and social well-being. D The student is unhealthy only if physical illness develops.

2. Two classmates follow different daily routines. One exercises regularly but sleeps very little, while the other gets enough sleep but spends most of the day eating junk food and using a mobile phone. What can be concluded from these routines?

A Following only one healthy habit is enough to remain healthy. B Health depends on maintaining several healthy habits together. C Sleep is more important than all other healthy habits. D Exercise alone can compensate for unhealthy eating habits.

3. Two playgrounds are located in different localities. One is clean and well maintained, while the other has stagnant water, garbage, flies, and mosquitoes. Besides being more pleasant to play in, why is the first playground a healthier choice?

A It encourages children to exercise for longer hours. B It reduces the chances of exposure to unhygienic surroundings and disease-carrying organisms. C It always has cleaner drinking water available. D It prevents all communicable diseases.

4. A doctor notes that a patient has a body temperature of 39°C, while the patient complains of feeling weak and having body pain. Which observation is classified as a sign?

A Feeling weak B Body pain C High body temperature D Tiredness

5. During a health awareness programme, students discuss why diseases spread differently. Which statement best distinguishes communicable diseases from non-communicable diseases?

A Communicable diseases always affect only one organ, whereas non-communicable diseases affect many organs. B Communicable diseases are caused by pathogens and can spread from one person to another, whereas non-communicable diseases do not spread in this way. C Non-communicable diseases are always inherited, whereas communicable diseases are not. D Communicable diseases can only spread through air.

6. Four families are trying to reduce the risk of communicable diseases. Which family has addressed the greatest number of possible modes of disease transmission?

A A family that drinks boiled water but ignores mosquito breeding around the house. B A family that uses mosquito nets but frequently shares towels with infected people. C A family that drinks safe water, maintains hygiene, covers coughs and sneezes, and prevents mosquito breeding. D A family that exercises daily and eats a balanced diet.

7. A school plans two health campaigns. One focuses on encouraging regular exercise, while the other promotes proper handwashing with soap. Which campaign is more directly aimed at reducing the spread of communicable diseases?

A Encouraging regular exercise B Organising outdoor sports competitions C Promoting proper handwashing with soap D Advising students to sleep early

8. A child recovers from an infectious disease. Later, many classmates develop the same disease, but the child remains healthy. Which explanation best accounts for this observation?

A The child has developed immunity against that disease. B The disease can no longer spread. C The child no longer comes in contact with pathogens. D The child's body permanently destroys all germs.

9. A person with a common viral illness insists on taking antibiotics without consulting a doctor. Why is this decision scientifically incorrect?

A Antibiotics cure all infectious diseases only when taken early. B Antibiotics work against viruses but not bacteria. C Antibiotics work against bacterial infections, and unnecessary use can contribute to antibiotic resistance. D Antibiotics should be taken only after vaccination.

10. A student says that malaria and dengue spread in the same way because both are caused by mosquitoes. Which statement correctly explains the role of mosquitoes in these diseases?

A Mosquitoes produce the pathogens that cause these diseases. B Mosquitoes act as vectors that carry disease-causing pathogens from one person to another. C Mosquitoes become sick after biting infected people. D Mosquitoes spread only viral diseases.