2496: Assertions (A) :
A mixture of salt and ice gives temperature below 0°C.
Reason (R) :
The salt raises the freezing point of ice.
In the context of the above two statements, which one of the following is correct?
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and Rare 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
2497: Carpenter A can make a chair in 6 hours, carpenter B in 7 hours and carpenter C in 8 hours. If each carpenter works for 8 hours per day, how many chairs will be made in 21 days ?
(a) 61
(b) 73
(c) 67
(d) 79
2498: Which of the following is/are found in plant cells but not in those of animals ?
(a) Plastid & Cellular wall
(b) Chromosome
(c) Mitochondria & Golgi apparatus
(d) Cell wall & lysozyme
2499: Diego Garcia is:
(a) An American military air base in the Indian Ocean
(b) U.K. Navy base in the Pacific Ocean
(c) An island in Antarctica
(d) None of the above
2500: Dry Farming in India is extensively practised in
(a) Kanara plains
(b) Deccan Region
(c) Coromandel plains
(d) Punjab plains