CBSE Class 8 Science Health The Ultimate Treasure (Class 8 NCERT New) Quiz 20

1. What is a recombinant vaccine?

A A recombinant vaccine is made using a harmless part of the germ, which our immune system then learns to fight. B A recombinant vaccine is made by combining two different viruses to create a new disease. C A recombinant vaccine is made by using chemicals to kill all germs in the body. D A recombinant vaccine is made by injecting live bacteria directly into the bloodstream.

2. Which diseases are mentioned as examples for vaccines in the passage?

A Hepatitis, Polio, Covid-19, Smallpox B Malaria, Dengue, Typhoid, Rabies C Tuberculosis, Measles, Chickenpox, Mumps D Influenza, Cholera, Yellow Fever, Zika

3. Who discovered that people who had cowpox did not get smallpox?

A English doctor Edward Jenner B French chemist Louis Pasteur C German physician Robert Koch D Scottish physician Alexander Fleming

4. What was the traditional method used in India to protect against smallpox called?

A Variation B Vaccination C Inoculation D Quarantine

5. People who performed the traditional smallpox protection practice in India were known as:

A Vaccinators B Teekedaars C Doctors D Scientists

6. Jenner observed that milkmaids who had cowpox did not catch smallpox.

A True B False

7. What did Jenner test by injecting cowpox sap into a boy?

A If the boy would catch smallpox B If the boy would show no illness when exposed to smallpox C If the boy would become immune to cowpox D If the boy would develop a fever

8. Mass vaccination eventually helped eradicate smallpox worldwide.

A True B False

9. According to the graph, in which year was smallpox eradicated worldwide?

A 1979 B 1965 C 1985 D 1992

10. What is the main purpose of vaccines according to the passage?

A To cure diseases B To prevent diseases C To treat diseases after someone is sick D To minimize the spread of bacteria