Q 1 - Assertion (A): Till now, no vaccine has been invented that can cure AIDS.

Reason(R): The genetic code of AIDS changes very frequently.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 2 - Assertion (A): While making electric wires, we do not use silver.

Reason(R): Silver is not a good conductor of electricity.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 3 - Assertion (A): The level of life expectancy is more in female in India.

Reason(R): Females receive quality diet as compared to males.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 4 - Assertion (A): When we keep salt in open, it absorbs moisture.

Reason(R): Natural salt contains Magnesium chloride in more amount.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 5 - Assertion (A): All over the world, the use of chloroflouro carbon has been banned.

Reason(R): chloroflouro carbon is the cause of skin cancer.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 6 - Assertion (A): If the weather is hot and humid, we feel more comfortable.

Reason(R): If the climate is humid, the evaporation of the sweat is faster.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 7 - Assertion (A): As an insecticide, DDT is not being used nowadays as .previous.

Reason(R): Use of DDT is harmful for humans.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 8 - Assertion (A): The position of ventilators are near the roof.

Reason(R): Better conduction of the heat takes place near the roof.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 9 - Assertion (A): In the northern hemisphere, the direction of deflection of wind is towards right and vice versa in southern hemisphere.

Reason(R): Wind’s direction gets changed due to the rotation of the earth.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.

Q 10 - Assertion (A): Tughlaq was considered a mad king.

Reason(R): Though he had many ideas, they were not practical.

A - Both A and R are true and R is the correct explanation of A.

B - Both A and R are true but R is not the correct explanation of A.

C - A is true but R is false.

D - A is false but R is true.

E - Both A and R are false.