1506: Mahatma Gandhi undertook fast unto death in 1932, mainly because
(a) Round Table Conference failed to satisfy Indian political aspirations
(b) Congress and Muslim League had differences of opinion
(c) Ramsay Macdonald announced the Communal Award
(d) None of the statements (a), (b) and (c) given above is correct in this context
1507: In an examination, every candidate took Physics or Mathematics or both 65.8% took Physics and 50.2% took Mathematics. The total number of candidates was 2000. How many took both Mathematics and Physics ?
(a) 750
(b) 700
(c) 550
(d) 500
1508: In the context of CO2 emission and global Warming, what is the name of a market driven device under the UNFCC that allows developing countries to get funds/incentives from the developed countries to adopt better technologies that reduce greenhouse gas emissions?
(a) Carbon Footprint
(b) Carbon Credit Rating
(c) Clean Development Mechanism
(d) Emission Reduction Norm
1509: A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in
(a) 3 months
(b) 4 months
(c) 8 months
(d) 12 months
1510: 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