(A) : In taking into account the fact that any object which floats must have an average density less than that of water, during world war 1, a number of cargo vessels are made of concrete. (R ) : Concrete cargo vessels filled with air floats on water.

(A) : In taking into account the fact that any object which floats mus

1.	(A) : In taking into account the fact that any object which floats must have an average density less than that of water, during world war 1, a number of cargo vessels are made of concrete. (R ) : Concrete cargo vessels filled with air floats on water.
Answer» Both (A) and (R ) are TRUE and (R ) is the correct EXPLANATION of (A) Both (A) and (R ) are true and (R ) is not the correct explanation of (A) (A) is true but (R ) is FALSE Both (A) and (R ) are false ANSWER :A