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TNPSC Chemistry Model Question Papers

General Science
9. Estimation of nitrogen is done by
 
  • A. Kheldahl's method
  • B. Lasaigne's method
  • C. Carius method
  • D. Soda lime test
Answer: A.
Kheldahl's method
 
10. The major constituent of air is
 
  • A. Nitrogen
  • B. Carbon dioxide
  • C. Oxygen
  • D. Hydrogen
Answer: A.
Nitrogen
 
 
11. Which one of the following is a protein fibre?
 
  • A. Nylon
  • B. Polyester
  • C. Silk
  • D. Cotton
Answer: C.
Silk
 
12. Broken glass that is used in the manufacture of glass is called
 
  • A. Cullet
  • B. Waste glass
  • C. Arachis hypogeal
  • D. Phaseolus mungo
Answer: B.
Waste glass