2806: Which one of the following statements is not correct?
(a) There is no definition of the Scheduled Tribe in the Constitution of India.
(b) North-East India accounts for a little over half of the countrys tribal population.
(c) The people known as Todas live in the Nilgiri area.
(d) Lotha is a language spoken in Nagaland.
2807: Which one of the following is useful for biological control of pests?
(a) Honey bees and locusts
(b) Scorpions and spiders
(c) Wasps and birds
(d) Parrots and kites
2808: Which of the following are Financial Committees of Parliament in India?
1. Public Accounts Committee
2. Estimates Committee
3. Committee on Public Undertakings
(a) 1 and 3
(b) 1 and 3
(c) 2 and 3
(d) 1, 2 and 3
2809: The difference between a nuclear reactor and an atomic bomb is that
(a) no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction
(b) the chain reaction in nuclear reactor is controlled
(c) the chain reaction in nuclear reactor is not controlled
(d) no chain reaction takes place in atomic bomb while it takes place in nuclear reactor
2810: The alpha-particle carries two positive charges. Its mass is very nearly equal to that of
(a) two protons
(b) an atom of helium
(c) sum of masses of two positrons and two neutrons
(d) two positrons as each positron carries a single positive charge