626: Consider the following crops :
1. Cotton
2. Groundnut
3. Rice
4. Wheat
Which of these are Kharif crops?
(a) 1 and 4
(b) 1, 2 and 3
(c) 2 and 3 only
(d) 2, 3 and 4
Explanation:
Wheat is a Rabi crop, rest all are Kharif crops.
Common kharif crops are:
Millet (Bajra)
Sorghum Jawar
Maize (corn)
Mung bean (green gram)
Sugarcane
Guar
Arhar or Tur Pigeon pea
Urad (black gram)
groundnut (Peanut)
Sunflower
Soybean
Rice
Gwara
Paddy
Millets - jowar, bajra and ragi
Tea
Cotton
627: Which one among the following States of India has the Lowest density of population ?
(a) Arunachal Pradesh
(b) Sikkim
(c) Meghalaya
(d) Himachal Pradesh
Explanation:
State Density of Population
Arunachal Pradesh 13
Sikkim 76
Himachal Pradesh 109
Meghalaya 103
628: Consider the following statements:
1. Ocean currents are the slow-surface movement of water in the ocean.
2. Ocean currents assist in maintaining the Earth's heat balance.
3. Ocean currents are set in motion primarily by prevailing winds.
4. Ocean currents are affected by the configuration of the ocean.
Which of these statements are correct?
(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4
Explanation:
The ocean currents are not only slow but also could be fast. So, statements 2, 3 are 4 are correct.
629: Consider the following statements about the Roaring Forties
I. They blow uninterrupted in the Northern and Southern Hemispheres.
II. They blow with great strength and constancy.
III. Their direction is generally from North-West to East in the Southern Hemisphere.
IV. Overcast skies, rain and raw weather are generally associated with them.
Which of these statements are correct ?
(a) I, II and III
(b) II, III and IV
(c) I, III and IV
(d) I, II and IV
630: Climate is extreme, rainfall is scanty and the people used to be nomadic herders.
The above statement best describes which of the following regions?
(a) African Savannah
(b) Central Asian Steppe
(c) North American Prairie
(d) Siberian Tundra
Explanation:
Option (b) is correct, because we find extreme of climate in central Asia region where temperature goes upto 40 degree in summer and -40 degree in winter.
And also the most of the nomadic herders of the world are found in this region.