4316: Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust ?
(a) Silicon
(b) Oxygen
(c) Carbon
(d) Calcium
4317: Consider the following climatic and geographical phenomena:
1. Condensation
2. High temperature and humidity
3. Orography
4. Vertical wind
Thunder Cloud development is due to which of these phenomena?
(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4
4318: Consider the following statements:
The Environment Protection Act, 1986 empowers the Government of India to
1. state the requirement of public participation in the process of environmental protection, and the procedure and manner in which it is sought
2. lay down the standards for emission or discharge of environmental pollutants from various sources
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
4319: Who started Bhoodan Movement in India?
(a) Gandhiji
(b) Jayaprakash Narayan
(c) Vinoba Bhave
(d) Jawaharlal Nehru
4320: Consider the following statements made about the sedimentary rocks :
I. Sedimentary rocks are formed at Earth's surface by the hydrological system.
II. The formation of sedimentary rocks involves the weathering of pre-existing rocks.
III. Sedimentary rocks contain fossils.
IV. Sedimentary rocks typically occur in layers.
Which of these statements are correct ?
(a) I and II
(b) I and IV
(c) II, III and IV
(d) I, II, III and IV