641: Which of the following are associated with Lord Lytton?
1. Rowlatt Act
2. The Arms Act
3. The Vernacular Press Act
4. Abolition of duties on the import of coarse cotton goods
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2 and 4
642: Consider the geographical details given in the following figure :
The point marked by A in the figure indicates a country in
(a) North America
(b) South America
(c) Europe
(d) Asia
643: Radioactive element which has been found to have large reserves in India is:
(a) Thorium
(b) Uranium
(c) Radium
(d) Plutonium
644: Which of the following is true about the Bats?
1. Bats are mammals
2. Bats have wings which are actually the modified forelimbs
3. Bats are nocturnal in habit
(a) 1, 2 & 3
(b) 2 & 3
(c) 1 & 3
(d) 1 & 2
645: 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