4241: Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust ?
(a) Silicon
(b) Oxygen
(c) Carbon
(d) Calcium
4242: What is Medecins Sans Frontieres (MSF)?
(a) An agency formed by the International Olympic Committee (IOC) to check misuse of drugs by sports persons
(b) A non-governmental organization which specialized in international humanitarian aid and emergency medical assistance.
(c) An organization to develop applications of nanotechnology in medicine
(d) An organization of medical practitioners funded by the European Union which carries out research against spread of AIDS
4243: According to the Constitution of India, it is the duty of the President of India to cause to be laid before the Parliament which of the following?
1. The Recommendations of the Union Finance Commission
2. The Report of the Public Accounts Committee
3. The Report of the Comptroller and Auditor General
4. The Report of the National Commission for Scheduled Castes
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
4244: A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in
(a) 3 months
(b) 4 months
(c) 8 months
(d) 12 months
4245: What is the old name of Zimbabwe?
(a) Rhodesia
(b) Zambia
(c) Namibia
(d) Kampuchea