46: Arrange the following Buddhist councils in a chronological order:
(1) Vaishali
(2) Rajagraha
(3) Patliputra
(4) Sreenagar
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(a) 1, 4, 3, 2
(b) 3, 2, 1, 4
(c) 4, 1, 2, 3
(d) 2, 1, 3, 4
47: Consider the following chemicals :
1. Benzene
2. Carbon tetrachloride
3. Sodium Carbonate
4. Trichloroethylene
Which of the above is/are used as dry cleaning chemicals ?
(a) 1 Only
(b) 2 Only
(c) 1, 2 and 4 Only
(d) 1, 2, 3 and 4
48: MERCOSUR consists of group of countries of
(a) Africa
(b) Asia
(c) Latin America
(d) South East Asia
49: In the year 2001, India offered a grant of five million dollars to Tajikistan to
(a) tackle the drought situation
(b) set up a software Technology Park
(c) promote mineral exploration
(d) procure defence equipment
50: When one enters a dark room, he is not able to see anything but after some time his vision improves. This is because:
(a) The retina of the eye comes forward
(b) The retina of the eye moves backward
(c) The pupil of the eye contracts
(d) The pupil of the eye dilates