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Chemistry - General Questions


1. The nucleus of an atom consists of


A. electrons and neutrons

B. electrons and protons

C. protons and neutrons

D. All of the above



2. The most electronegative element among the following is


A. sodium

B. bromine

C. fluorine

D. oxygen



3. The metal used to recover copper from a solution of copper sulphate is


A. Na

B. Ag

C. Hg

D. Fe



4. The metallurgical process in which a metal is obtained in a fused state is called


A. smelting

B. roasting

C. calcinations

D. froth floatation



5. The most commonly used bleaching agent is


A. alcohol

B. carbon dioxide

C. chlorine

D. sodium chlorine



6. The most malleable metal is


A. platinum

B. silver

C. iron

D. gold



7. The most abundant rare gas in the atmosphere is


A. He

B. Ne

C. Ar

D. Xe



8. The metal that is used as a catalyst in the hydrogenation of oils is


A. Ni

B. Pb

C. Cu

D. Pt



9. The heat required to raise the temperature of body by 1 K is called


A. specific heat

B. thermal capacity

C. water equivalent

D. None of the above



10. The nucleus of a hydrogen atom consists of


A. 1 proton only

B. 1 proton + 2 neutron

C. 1 neutron only

D. 1 electron only



Answers

1. C

2. C

3. D

4. A 

5. C 

6. D

7. C

8. A

9. B

10. A

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