3461: Consider the following statements:
A digital signature is
1. an electronic record that identifies the certifying authority issuing it
2. used to serve as a proof of identity of an individual to access information or server on Internet
3. an electronic method of signing an electronic document and ensuring that the original content is unchanged
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
3462: In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
1. decomposer microorganisms to the surface.
2. nutrients to the surface.
3. bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct ?
(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
3463: Who among the following leaders did not believe in the drain theory of Dadabhai Naoroji ?
(a) B.G. Tilak
(b) R.C. Dutt
(c) M.G. Ranade
(d) Sir Syed Ahmed Khan
3464: Arrange the following in descending order of their life spans
A. Elephant
B. Horse
C. Tiger
D. Wolf
(a) A, B, C, D
(b) A, C, B, D
(c) C, A, B, D
(d) D, A, B, C
3465: India has the maximum volume of foreign trade with
(a) USA
(b) Japan
(c) Germany
(d) UAE