Assertion (A): Garbage should never be kept in covered bins.

Reason: Covered bins provide suitable conditions for the growth and development of germs as well as serve as breeding places for many vectors.

1. Both A and R are true.
2. Both A and R are false.
3. A is true and R is false.
4. A is false and R is true.

Assertion (A): Diseases like cowpox, smallpox, chickenpox are all caused by the same virus.

Reason (R): The vaccine prepared for smallpox contains the fully virulent, living 'cowpox virus.

1. Both A and R are true.
2. Both A and R are false.
3. A is true and R is false.
4. A is false and R is true.

Match the items in Column A with those in Column B

Write full forms for each of the following abbreviations :

(a) AIDS

(b) HIV

(c) WBCs

(d) BCG

(e) TAB