CBSE Class 8 Science Health The Ultimate Treasure (Class 8 NCERT New) Quiz 9

1. Which statement best describes what antibiotics do in the body?

A They kill bacteria causing infections B They boost immunity against all germs C They neutralize toxins from protozoa D They cure viral diseases like flu

2. Which infection type should NOT be treated with antibiotics?

A Skin boil caused by bacteria B Common cold caused by viruses C Typhoid caused by bacteria D Strep throat caused by bacteria

3. What is antibiotic resistance?

A Protozoa change into bacterial forms B Viruses stop entering human cells C Humans become immune to all antibiotics D Bacteria survive and multiply despite an antibiotic

4. In the community diagram, which pathway spreads resistant bacteria from farms to people?

A Through direct contact with protozoa B Through wind carrying viral droplets C Through solar light on crop leaves D Through animal food products like meat or butter

5. According to the infographic, what hospital-related factor can spread resistant bacteria?

A Lack of protozoa in hospitals B Use of antiviral vaccines only C Excess oxygen in patient rooms D Dirty surfaces or healthcare workers

6. Why can taking antibiotics when they are not required be harmful?

A It reduces immunity against all microbes B It turns antibiotics into vaccines over time C It instantly cures viral fevers more quickly D It helps resistant bacteria grow and take over

7. Which precaution helps reduce antibiotic resistance, as shown in the panels?

A Stop treatment after first relief B Give routine shots to cattle C Share leftover pills with family D Use only with a doctor’s prescription

8. What happens when antibiotics kill harmful bacteria along with good bacteria?

A Protozoa replace all gut microbes B Human cells become resistant to drugs C Viruses immediately mutate into bacteria D A few microbes develop resistance

9. Which sequence best explains one route of resistant bacteria spreading shown in the community diagram?

A Animals develop resistance, products expose people, community spread B Vaccines kill viruses, hospitals clean surfaces, no spread C Plants release antivirals, wind stops microbes, fewer cases D People take vitamins, protozoa vanish, infection ends

10. Which statement best defines health for overall well-being?

A Having strong muscles and stamina only B Complete physical, mental, social well-being C Being happy most days of the week D Only absence of visible disease signs