1241: Consider the following statements :
I. Most magmas are a combination of liquid, solid and gas.
II. Water vapour and carbon dioxide are the principal gases dissolved in a magma.
III. Basaltic magma is hotter than the silicic magma.
IV. The magma solidified between sedimentary rocks in a horizontal position is known as dike.
Which of these statements are correct ?
(a) I, II and III
(b) II, III and IV
(c) I and IV
(d) I, II and IV
1242: Assertion (A):
India does not export natural rubber.
Reason (R) :
About 97% of India's demand for natural rubber is met from domestic production.
(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
1243: When you travel in Himalayas, you will see the following :
1. Deep gorges
2. U-turn river courses
3. Parallel mountain ranges
4. Steep gradients causing land-sliding
Which of the above can be said to be the evidences for Himalayas being young fold mountains?
(a) 1 and 2 only
(b) 1, 2 and 4 only
(c) 3 and 4 only
(d) 1, 2, 3 and 4
1244: What does Baudhayan theorem (Baudltayan Sulva sutra) relate to ?
(a) Lengths of sides of a right-angled triangle
(b) Calculation of the value of pi
(c) Logarithm calculations
(d) Normal distribution curve
1245: A, B, C, D, E and F, not necessarily in that order are sitting on six chairs regularly placed around a round table. It is observed that
1. A is between D and F,
2. C is opposite D,
3. and D and E are not on neighbouring chairs.
Which one of the following pairs must be sitting on neighbouring chairs ?
(a) A and B
(b) C and E
(c) B and F
(d) A and C