611: Consider the following statements :
1. The duration of the monsoon decreases from southern India to northern India.
2. The amount of annual rainfall in the northern plains of India decreases from east to west.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
612: Which one of the following straits is nearest to the International Date Line?
(a) Strait of Hormuz
(b) Bering Strait
(c) Malacca Strait
(d) Strait of Gibraltar
613: Which one of the following statements is not correct?
(a) The presence of NaCl increases the rate of setting of Plaster of Paris
(b) Gypsum is added to the cement to slow down its rate of setting
(c) All alkaline earth metals form hydrated salts
(d) Barium and Strontium are found free in nature
614: What is the correct sequence of the rivers Godavari, Mahanadi, Narmada and Tapi in the descending order of their lengths?
(a) Godavari--Mahanadi--Narmada--Tapi
(b) Godavari--Narmada--Mahanadi--Tapi
(c) Narmada--Godavari--Tapi--Mahanadi
(d) Narmada--Tapi--Godavari--Mahandai
615: Which one of the following is the national aquatic animal of India?
(a) Saltwater crocodile
(b) Olive ridley turtle
(c) Gangetic dolphin
(d) Gharial