2351: Which of the following practices can help in water conservation in agriculture?
1. Reduced or zero tillage of the land
2. Applying gypsum before irrigating the field
3. Allowing crop residue to remain in the field
Select the correct answer using the code given below :
a. 1 and 2 only
b. 3 only
c. 1 and 3 only
d. 1, 2 and 3
2352: Neap tides are produced in the first and third quarters of the Moon. Then,
(a) The Moon and the Sun are in conjunction with the other planets
(b) The Moon and the Sun are in opposition with each other
(c) The attractions of the Sun and the Moon are at right angles to each other
(d) The Moon and the Sun are in quadrant position to each other
2353: Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct?
1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2354: Consider the following :
I. Industrial Finance Corporation of India
II. Industrial Credit and Investment Corporation of India
III. Industrial Development Bank of India
IV. Unit Trust of India
The correct sequence in which the above were established is
(a) I, II, III, IV
(b) I, III, II, IV
(c) IV, III, II, I
(d) I, IV, III, II
2355: Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?
(a) Isolation
(b) Mutation
(c) Natural Selection
(d) Sexual Reproduction