3236: Pearls are formed inside:
(a) Squids
(b) Snails
(c) Oysters
(d) Mollusks
3237: In an objective test there are 60 questions. Each question carries four alternative answers only one of which is correct. Suppose A and B are two candidates both of whom know correct answers to 30 questions. A answers only 30 questions while B answers all 60 questions choosing answers at random for those he does not know the answers of. If each question carries a mark of 1 and no negative marks are awarded, the marks obtained by B are expected to be larger than those obtained by A by
(a) 0
(b) 15
(c) 5
(d) 7.5
3238: What type of mirror is used by motorists to see the road behind them?
(a) Convex
(b) Concave
(c) Plane
(d) Concavo-convex
3239: Assertion : (A)
Though India's national income has gone up several fold since 1947, there has been no marked improvement in the per capita income level.
Reason : (R)
Sizeable proportion of the population of India is still living below the poverty line.
In the context of the above two statements which one of the following is correct ?
(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
3240: Democracy exists in India. Government is run by the elected representatives of the people. For proper functioning of this system:
(a) One should cast vote in elections
(b) One must be prompt in paying taxes
(c) One must be good to himself and to the society
(d) None of these