SSC Chemistry Previous year questions Set 2

11. Which of the following gases will effuse out of football bladder most quickly ? [SSC Tax Assistant (Income Tax & Central Excise) 2004]
A. He
B. H2
C. N2
D. O2
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12. Silk fibre chemically is : [SSC CGL Prelim 2002]
A. Carbohydrate
B. Fat
C. Protein
D. Cellulose
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13. The substance which does not expand on going from liquid state to solid state is – [SSC Section Officer (Audit) 2001]
A. Water
B. Cast-iron
C. Aluminium
D. Type metal
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14. Which among the following is a carbohydrate? [SSC Section Officer (Audit) 1997]
A. Nylon
B. Cane-sugar
C. Turpentine
D. Hydrogen peroxide
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15. Soap is prepared by boiling caustic soda with [SSC CGL Prelim 2003]
A. Alcohol
B. Kerosene oil
C. Glycerine
D. Fats
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16. The natural source of hydro-carbon is_ [SSC CPO Sub-Inspector 2003]
A. Crude oil
B. Biomass
C. Coal
D. Carbohydrates
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17. By which organic compound all the oils are known ?[SSC CG Level Prelim 2002]
A. Carbohydrate
B. Protein
C. Hydrocarbon
D. Ester
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18. Which of the following is used as a lubricant in heavy machines? [SSC Section Officer (Audit) 2001]
A. Bauxite
B. Sulphur
C. Phosphorus
D. Graphite
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19. What happens when a chemical bond is formed ? [SSC Section Officer (Audit) 1997]
A. energy is always absorbed
B. energy in always released
C. more energy is released tha is absorbed
D. energy is neither released nor absorbed
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20. The three elements most needed in common fertilisers are : [SSC CGL Prelim 2000]
A. Sulphur, Phosphorous and Sodium
B. Nitrogen, Potassium and Phosphorous
C. Phosphorous, Sodium and Nitrogen
D. Calcium, Phosphorous and Potassium
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