2431: The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is

(a) Troposphere, Stratosphere, Ionosphere, Mesosphere
(b) Stratosphere, Troposphere, Ionosphere, Mesosphere
(c) Troposphere, Stratosphere, Mesosphere, Ionosphere
(d) Stratosphere, Troposphere, Mesosphere, Ionosphere
2432: Which one of the following pairs is not correctly matched?

(a) William Dickson : Motion Picture film

(b) Charles Babbage : Programmable computer

(c) Nicholas Stern : Construction technology

(d) Brian Greene : String theory
2433: Dilip Kaur Tiwana is well known as a

(a) litterateur
(b) musician
(c) scientist
(d) sports person
2434: How many numbers lie between 300 and 500 in which 4 comes only one time?

(A) 99
(B) 100
(C) 110
(D) 120
2435: Consider the following statements:

1. Vigyan Rail is a Science Exhibition on wheels organized by the Council of Scientific and Industrial Research.

2. Vigyan Prasar is a autonomous body under the Ministry of Human Resource Development.

3. EDUSAT, the ISRO's educational satellite was launched from French Guyana in 2004.

Which of the statements given above is/are correct?

(a) 1 and 2
(b) 2 and 3
(c) 1, 2 and 3
(d) None