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TNPSC Chemistry Gk Questions and Answers

General Science
5. Concentrated solution of sodium chloride is called
 
  • A. Mineral water
  • B. Saline water
  • C. Brine
  • D. Sterilized water
Answer: C.
Brine
 
6. The reaction between methane and chlorine in diffused sunlight is called
 
  • A. Oxidation
  • B. Addition
  • C. Substitution
  • D. Polymerisation
Answer: C.
Substitution
 
 
7. When zinc reacts with hydrochloric acid, the gas evolved is
 
  • A. Oxygen
  • B. Chlorine
  • C. Hydrogen
  • D. None of these
Answer: C.
Hydrogen
 
8. National chemical laboratory is at
 
  • A. Delhi
  • B. Pune
  • C. Kalpakkam
  • D. Kolkata
Answer: B.
Pune