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

Answer –B. H2

12. Silk fibre chemically is : [SSC CGL Prelim 2002]
A. Carbohydrate
B. Fat
C. Protein
D. Cellulose

Answer –C. Protein

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

Answer –D. Type metal

14. Which among the following is a carbohydrate? [SSC Section Officer (Audit) 1997]
A. Nylon
B. Cane-sugar
C. Turpentine
D. Hydrogen peroxide

Answer –B. Cane-sugar

15. Soap is prepared by boiling caustic soda with [SSC CGL Prelim 2003]
A. Alcohol
B. Kerosene oil
C. Glycerine
D. Fats

Answer –D. Fats

16. The natural source of hydro-carbon is_ [SSC CPO Sub-Inspector 2003]
A. Crude oil
B. Biomass
C. Coal
D. Carbohydrates

Answer –A. Crude oil

17. By which organic compound all the oils are known ?[SSC CG Level Prelim 2002]
A. Carbohydrate
B. Protein
C. Hydrocarbon
D. Ester

Answer –C. Hydrocarbon

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

Answer –D. Graphite

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

Answer –A. energy is always absorbed

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

Answer –B. Nitrogen, Potassium and Phosphorous

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