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PG TRB Chemistry Previous Year Question Papers

TRB Model Questions
 
9. The filter beds at water works remove most of the
 
  • A. Suspended solids
  • B. Dissolved gases
  • C. Solutes
  • D. Bacteria
Answer: A.
Suspended solids
 
10. Tempered steel is used in making
 
  • A. Electric wires
  • B. Chisels
  • C. Rails
  • D. Coins
Answer: B.
Chisels
 
 
11. Cotton is bleached by
 
  • A. Carbon dioxide
  • B. Hydrogen chloride
  • C. Potassium chloride
  • D. Chlorine
Answer: D.
Chlorine
 
12. Pure gold is
 
  • A. 13 carat gold
  • B. 14 carat gold
  • C. 22 carat gold
  • D. 24 carat gold
Answer: D.
24 carat gold