1376: Assertion (A) :
A man standing on a completely friction-less surface can propel himself by whistling.
Reason (R) :
If no external force acts on a system, its momentum cannot change.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
1377: Where do the Sahariya tribals, who were recently in the news, live?
(a) Orissa
(b) Andhara Pardesh
(c) Rajasthan
(d) Assam
1378: With reference to soil conservation, consider the following practices :
1. Crop rotation
2. Sand fences
3. Terracing
4. Wind breaks
Which of the above are considered appropriate methods for soil conservation in India ?
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
1379: A present group of nations known as G-8 started first as G-7. Which one among the following was not one of them?
(A) Canada
(B) Russia
(C) Italy
(D) Japan
1380: In the middle of the year 2008 the Parliament of which one of the following countries became the first in the world to enact a Climate Act by passing "The Climate Change Accountability Bill"?
(a) Germany
(b) Canada
(c) Australia
(d) Japan