2376: There are three tables containing two drawers each. It is known that one of the table contains a silver coin in each of its drawers, another table contains a gold coin in each drawer while the third table contains a silver coin in one drawer and a gold coin in the other. One of the drawers of a table is opened and found to contain a silver coin. What is the probability that the other drawer of that table contains a gold coin ?
(a) 1
(b) 0.5
(c) 0.25
(d) 0.75
2377: Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?
(a) Malaria is caused by several species of Plasmodium
(b) Man does not develop, immunity to malaria during natural infection
(c) Vaccines can be developed only against bacteria
(d) Man is only an intermediate host and not the definitive host
2378: Standard of living of a nation can be judged by:
(a) Increase in GNP at factor cost
(b) Increase in GNP at cost including taxes and duties
(c) Increase in NNP at factor cost
(d) None of the above
2379: Chaitra 1 of the national calendar based on the Saka Era corresponds to which one of the following dates of the Gregorian calendar in a normal year of 365 days?
(a) 22nd March (or 21st March)
(b) 15th May (or 16th May)
(c) 31st March (or 30th March)
(d) 21st April (or 20th April)
2380: Swaraj as a national demand was first made by:
(a) Bal Gangadhar Tilak
(b) Dadabhai Naoroji
(c) Jawaharlal Nehru
(d) Chitaranjan Das