776: In summer, man with excess perspiration feels weak, because of the:
(a) Loss of more water through evaporation
(b) Loss of salts through evaporation
(c) Loss of carbohydrates through evaporation
(d) All factors mentioned above
777: Assertion (A):
According to statistics, more female children, are born each year than male children in India.
Reason (R):
In India, the death rate of a male child is higher than that of the female child.
(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 a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
778: Consider the following statement :
1. The Nobel Prize Awarding Ceremony takes place on December 10 to every year.
2. The Nobel Prize for Literature was added later on to the other five area . Physics, Chemistry, Physiology or Medicine, Peace and Economics.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
779: If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not. This is because:
(a) Potato contains water whereas paper does not contain water
(b) Potato transmits microwaves whereas paper reflects microwaves
(c) Potato is mainly made up of starch whereas paper is mainly made up of cellulose
(d) Potato is a fresh organic material whereas' paper is a dead organic material
780: Swaraj as a national demand was first made by:
(a) Bal Gangadhar Tilak
(b) Dadabhai Naoroji
(c) Jawaharlal Nehru
(d) Chitaranjan Das