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PG TRB Model Question Paper for Chemistry Pdf

TRB Model Questions
 
5. The vitamin responsible for blood clotting is
 
  • A. A
  • B. B
  • C. C
  • D. K
Answer: D.
K
 
6. Chemically dry ice is
 
  • A. Ice kept at sub zero temperature
  • B. Solid sulphur dioxide
  • C. Ice formed from pure water
  • D. Solid carbon dioxide
Answer: D.
Solid carbon dioxide
 
 
7. The gases used for the artificial ripening of green fruits is
 
  • A. Acetylene
  • B. Methane
  • C. Ethane
  • D. Ethylene
Answer: D.
Ethylene
 
8. The amount of nitrogen present in the atmospheric air is about
 
  • A. 58%
  • B. 68%
  • C. 78%
  • D. 88%
Answer: C.
78%