2166: Consider the following statements :
1. In equatorial regions, the year is divided into four main seasons
2. In Mediterranean region, summer receives more rain
3. In China type climate, rainfall occurs throughout the year
4. Tropical highlands exhibit vertical zonation of different climates
Which of these statements are correct ?
(a) 1, 2, 3 and 4
(b) 1, 2 and 3
(c) 1, 2 and 4
(d) 3 and 4
2167: A thief steals a case and 5 persons witness that they have seen him stealing. The thief says that he will bring 50 persons who will say that they have not seen him stealing. Which of the following statements is correct?
(a) The thief cannot be believed without proper witness
(b) The witness given by 50 persons is invalid as they have not seen him stealing
(c) The witness given by 5 persons must be believed as they have given the witness first
(d) The witness given by 50 persons is more correct as they are more in number
2168: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3
2169: Consider the following statements :
1. Maize can be used for the production of starch.
2. Oil extracted from maize can be a feedstock for biodiesel.
3. Alcoholic beverages can be produced by using maize.
Which of the statements given above is / are correct ?
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
2170: How many times are an hour hand and a minute hand of a clock at right angles during their motion from 1.00 p.m. to 10.00 p.m.?
(A) 10
(B) 18
(C) 20
(D) 9