2446: Gerontology is the study of:
(a) Process of ageing
(b) Growth of cells
(c) Birds
(d) Vegetables
2447: Consider the following statements :
The most effective contribution made by Dadabhai Naoroji to the cause of Indian National Movement was that he
1. exposed the economic exploitation of India by the British
2. interpreted the ancient Indian texts and restored the self-confidence of Indians
3. stressed the need for eradication of all the social evils before anything else
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2448: The resolving power of an electron microscope is much higher than that of an ordinary light microscope because resolving power increases:
(a) If wavelength is short and wavelength of electron beam can be made quite small by accelerating the electrons.
(b) If wavelength is short and light given by electrons has very short wavelength.
(c) If magnification is high and electronic lens provides much higher magnification.
(d) If magnification is high and the electron microscope has a battery of lenses to provide high magnification.
2449: Which one of the following countries is not a member of the Commonwealth of Independence States (CIS) ?
(a) Estonia
(b) Armenia
(c) Georgia
(d) Belarus
2450: As an alternative to the partition of India, Gandhiji suggested to Mountbatten that he
(a) postpone granting of independence
(b) invite Jinnah to form the government
(c) invite Nehru and Jinnah to form the government together
(d) invite the army to take over for some time