3321: There are 6 persons A, B, C, D, E and F. they are to be seated in a row such that B never sits anywhere ahead of A, and C never sits anywhere ahead of B. In how many different ways can this be done?
(A) 120
(B) 72
(C) 60
(D) None
3322: which of the following pairs in respect of correct Power generation in India is/are correctly matched ?
(Rounded Figure)
1. Installed electricity generation capacity : 100000 MW
2. Electricity generation : 660 billion kWh
Select the correct answer using the code given below :
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
3323: Assertion (A):
Unlike temperate forests, the tropical rain forests, if cleared, can yield productive farm-land that can support intensive agriculture for several years even without chemical fertilizers.
Reason (R):
The primary productivity of the tropical rain forest is very high when compared to that of the temperate forests.
(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 the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3324: A man is standing on the 8 m long shadow of a 6 m long pole. If the length of his shadow is 2.4 m, what is the height of the man ?
(a) 1.4m
(b) 1.6m
(c) 1.8m
(d) 2.0m
3325: Which of the following is correct for tea?
(a) Alkaline and nicotine
(b) Alkaline and caffeine
(c) Acidic and nicotine
(d) Acidic and caffeine