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351: Consider the following statements :

1. Caffeine, a constituent of tea and coffee is a diuretic.

2. Citric acid is used in soft drinks.

3. Ascorbic acid is essential for the formation of bones and teeth.

4. Citric acid is a good substitution for ascorbic acid in our nutrition.

Which of the statements given above are correct ?

(a) 1 and 2, only
(b) 1, 2 and 3, only
(c) 3 and 4 only
(d) 1, 2, 3 and 4
352: Who among the following Indians mostly encouraged the remarriage of the widows?

(a) jaisingh

(b) Ahilya Bai

(c) Sarfoji

(d) Raja Ram Mohan Roy
353: Which of the following statements is correct?

(a) The village was the basic unit of Chola administration.

(b) The Chola kingdom was on the decline in the 9th century.

(c) Amoghavarsha is the best remembered of the Chola kings.

(d) None of the above
354: Amniocentesis is a method for:

(a) Determination of foetal sex.

(b) Separation of amino acids.

(c) Determination of the sequence of amino acids in a protein.

(d) Inducing abortion.
355: A cube of side 2 units is placed in a rectangular coordinate system with its centre at the origin. The coordinates of a set of 4 non-adjacent corners is

(a) (1, 1, 1); (-1, -1, -1); (1, -1, -1);

(b) (1, 1, 1); (-1, 1, 1); (1, -1, 1); (1, 1, -1)

(c) (1, 1, 1); (-1, -1, -1); (-1, 1, 1); (1, -1,-1)

(d) (-1, -1, -1); (1, 1, -1);. (-1, 1, 1); (-1, 1, -1)
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