3176: Assertion (A) :
60° - 65° latitudes in both the hemispheres have a low pressure belt instead of high pressure.
Reason (R) :
The low pressure areas are permanent over oceans rather than on land.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3177: In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages and one person can speak all the three languages, then how many persons are there in the group ?
(a) 21
(b) 22
(c) 23
(d) 24
3178: In a bisexual flower, if androecium and gynaecium mature at different times, the phenomenon is know as
(a) Dichogamy
(b) Herkogamy
(c) Heterogamy
(d) Monogamy
3179: Commercial production of mineral oil has started recently in which one of the areas of India, labelled 1, 2, 3 and 4 in the rough map given below :
(a) 1
(b) 2
(c) 3
(d) 4
3180: Which of the following metals is extracted from the Monazite sand found in plenty in India ?
(a) Gold
(b) Uranium
(c) Thorium
(d) Copper