1716: Extrusive (Intrusive) rocks are forms of:
(a) Igneous rocks
(b) Sedimentary rocks
(c) Metamorphic rocks
(d) None of the above
1717: Assertion (A):
In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R):
In a group, the atomic radial generally increase from top to bottom.
(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
1718: There are three parallel straight lines. Two points A and B are marked on the first line, points C and D are marked on the second line, and points E and F are marked on the third line. Each of these 6 points can move to any position on its respective straight line.
Consider the following statements:
I. The maximum number of triangles that can be drawn by joining these points is 18.
II. The maximum number of triangles that can be drawn by joining these points is zero.
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
1719: Match the drainage basins labelled as A, B, C and D with the names listed below and select the correct answer using the codes given below the names of the drainage basins.
Names of drainage basins :
1. Ganga-Brahmaputra
2. Indus
3. Parana
4. Zambezi
Code
(a) 3 1 2 4
(b) 1 3 4 2
(c) 1 3 2 4
(d) 3 1 4 2
1720: Who gave the Communal Award in India?
(a) C. R. Attlee
(b) Ramsay Macdonald
(c) Stafford Cripps
(d) None of the above