536: Assertion (A) :
A tennis ball will bounce higher in Calcutta than it would in Shimla.
Reason (R) :
The downward pull due to gravity is less and air is more rarefied in Shimla than in Calcutta.
(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
537: Nine different letters are to be dropped in three different letter boxes. In how many different ways can this be done?
(a) 27
(b) 3^9
(c) 9^3
(d) 3^9 - 3
538: Match List I with List II and select the correct answer by using the codes given below the lists :
List I List II
(Special Characteristic) (Name of Planet)
I. Farthest planet from the sun ------------ (A) Mercury
II. Largest planet of the solar system ---- (B) Venus
III. Planet second from the Sun in the solar system ------------ (C) Jupiter
IV. Planet nearest to the Sun -------------- (D) Pluto
------------------------------------- (E) Saturn
Codes:
(a) I-B, II-C, III-E, IV-A
(b) I-C, II-E, III-A, IV-B
(c) I-D, II-A, III-B, IV-C
(d) I-D, II-C, III-B, IV-A
539: Hybridisation is useful in developing improved crops by:
(a) Creating new and better genes
(b) Eliminating undesirable genes
(c) Producing favourable combination of genes
(d) By encouraging favourable genes and removing unfavourable ones
540: India is a party to the Ramsar Convention and has declared many areas as Ramsar Sites. Which of the following statements best describes as to how we should maintain these sites in the context of this Convention ?
(a) Keep all the sites completely inaccessible to man so that they will not be exploited
(b) Conserve all the sites through ecosystem approach and permit tourism and recreation only
(c) Conserve all the sites through ecosystem approach for a period without any exploitation, with specific criteria and specific period for each site, and then allow sustainable use of them by future generations.
(d) Conserve all the sites through ecosystem approach and allow their simultaneous sustainable use