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TRB MODEL QUESTIONS FOR CHEMISTRY

TRB Model Questions
6. The mass number of hydrogen is
 
  • A. 1
  • B. 1.8
  • C. 2.5
  • D. 3
Answer: A.
1
 
7. The catalyst used in the conversion of white phosphorous to red phosphorous is
 
  • A. Iodine
  • B. Sulphur
  • C. Carbon
  • D. Di-ammonium phosphate
Answer: A.
Iodine
 
 
8. A solution of potassium nitrate is
 
  • A. Acidic
  • B. Akaline or acidic depending on the concentration
  • C. Alkaline
  • D. Neutral
Answer: C.
Alkaline
 
9. Trimethyl benzene is called
 
  • A. Catechol
  • B. Mesithyl oxide
  • C. Pyrogallol
  • D. Mesitylene
Answer: D.
Mesitylene
 
10. Tobacco is preserved from drying out in
 
  • A. Ethanol
  • B. Acetone
  • C. Glycerol
  • D. Glycol
Answer: C.
Glycerol