3221: Poliomyelitis is an epidemic virus infection. Which of the following is responsible for it?
(a) Rhabdo virus
(b) Entero virus
(c) Dengue virus
(d) Mumps virus
3222: The Ninth Schedule to the Indian Constitution was added by
(a) First Amendment
(b) Eighth Amendment
(c) Ninth Amendment
(d) Forty second Amendment
3223: Helium is used for respiration in deep water instead of nitrogen because:
(a) It is heavier than nitrogen
(b) It is lighter than nitrogen
(c) It mixes less in blood than nitrogen
(d) It helps oxygen burn more quickly
3224: In the case of election to the Lok Sabha, the amount of Security deposited for general category candidates and SC/ST category candidates respectively is
(a) Rs 5,000 and Rs 2,500
(b) Rs 10,000 and Rs 2,500
(c) Rs 10,000 and Rs 5,000
(d) Rs 15,000 and Rs 7,500
3225: With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct?
1. Fly ash can be used in the production of bricks for building construction.
2. Fly ash can be used as a replacement for some of the Portland cement concrete.
3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements.
Select the correct answer using the code given below.
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only