1221: Mach Number is a term associated with the speed of:
(a) Ships
(b) Cars
(c) Aeroplanes
(d) Light
1222: In the map given below, four islands of Indian Ocean region i.e. (A) Seychelles, (B) Chagos, (C) Mauritius and (D) Socatra are marked as 1, 2, 3 and 4. Match them and select the correct answer from the codes given below.
Codes:
A B C D
(a) 1 3 4 2
(b) 3 1 2 4
(c) 1 3 2 4
(d) 3 1 4 2
1223: Nine different letters are to be dropped in three different letter boxes. In how many different ways can this be done?
(a) 27
(b) 3^9
(c) 9^3
(d) 3^9 - 3
1224: Consider the following statements regarding power sector in India :
I. The installed capacity of power generation is around 95000 MW.
II. Nuclear plants contribute nearly 15% of total power generation.
III. Hydroelectricity plants contribute nearly 40% of total power generation.
IV. Thermal plants at present account for nearly 80% of total power generation.
Which of these statements is/are correct ?
(a) I only
(b) II and III
(c) III and IV
(d) I and IV
1225: Which one of the following types of erosion is responsible for the formation of Chambal Ravines ?
(a) Splash
(b) Sheet
(c) Rill
(d) Gully