Choose the correct alternative from the following : - Assertion (A) : A little gap is left between iron rails.
Reason (R) : Iron expands in summer.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : Carbon forms the largest number of compounds.
Reason (R) : Carbon has the catenation property.

D. A IS FALSE BUT R IS TRUE.

Choose the correct alternative from the following : - Assertion (A) : Silver is not used to make electric wires.
Reason (R) : Silver is a bad conductor.

C. A IS TRUE BUT R IS FALSE.

Choose the correct alternative from the following : - Assertion (A) : Leakages in household gas cylinders can be detected.
Reason (R) : LPG has a strong smell.

C. A IS TRUE BUT R IS FALSE.

Choose the correct alternative from the following : - Assertion (A) : Amoebiasis is an occupational disease.
Reason (R) : Amoebiasis is caused by inhalation of asbestos dust.

E. BOTH A AND R ARE FALSE