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TRB MODEL QUESTIONS FOR CHEMISTRY

TRB Model Questions
16. The valency of helium is
 
  • A. 0
  • B. 2
  • C. 3
  • D. 4
 
17. The compound with a functional group COOH is called as
 
  • A. Alcohol
  • B. Aldehyde
  • C. Ester
  • D. Carboxylic acid
 
 
18. Which of the following is used in the manufacture of PVC?
 
  • A. Methane
  • B. Ethane
  • C. Propane
  • D. Acetylene
 
19. Which of the following is also called brown oil?
 
  • A. Peat
  • B. Lignite
  • C. Anthracite
  • D. Bituminous coal
 
20. Glycol is prepared from
 
  • A. Ethane
  • B. Ethene
  • C. Methane
  • D. Ethyne