1051: Assertion (A) :
The frequency of floods in North Indian plains has increased during the last couple of decades.
Reason (R) :
There has been reduction in the depth of river valleys due to deposition of silt.
(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
1052: 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
1053: Saddle Peak, the highest peak of Andaman and Nicobar islands, is located in
(a) Great Nicobar
(b) Middle Andaman
(c) Little Andaman
(d) North Andaman
1054: In eye donation, which one of the following parts of donor's eye is utilised ?
(a) Iris
(b) Lens
(c) Cornea
(d) Retina
1055: With reference to Swadeshi Movement, consider the following statements:
1. It contributed to the revival of the indigenous artisan crafts and industries.
2. The National Council of Education was established as a part of Swadeshi Movement.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2