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MCQs

Total Questions : 350 | Page 1 of 35 pages
Question 1. Rate of reaction can be calculated by dividing change in mass or volume by
  1.    time taken
  2.    total mass
  3.    amount of volume
  4.    the temperature
 Discuss Question
Answer: Option A. -> time taken
Answer: (a).time taken
Question 2. Chemical substances speeding up rate of chemical reaction is called as
  1.    pressure
  2.    concentration
  3.    catalysts
  4.    inhibitors
 Discuss Question
Answer: Option C. -> catalysts
Answer: (c).catalysts
Question 3. Haber process for manufacturing of ammonia requires catalyst of
  1.    vanadium oxide
  2.    iron
  3.    platinum
  4.    nickel
 Discuss Question
Answer: Option B. -> iron
Answer: (b).iron
Question 4. Milk turns sour due to
  1.    conversion of lactose in lactic acid
  2.    increased chemical changes
  3.    conversion of lactic acid into lactose
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 5. Factors affecting speed of reaction include
  1.    volume of gas
  2.    change in mass
  3.    pressure
  4.    temperature change
 Discuss Question
Answer: Option C. -> pressure
Answer: (c).pressure
Question 6. The reaction between ethanol and hydrogen bromide will give
  1.    bromide
  2.    bromoethane
  3.    bromoethane
  4.    bromoethanol
 Discuss Question
Answer: Option C. -> bromoethane
Answer: (c).bromoethane
Question 7. Under mild conditions, tertiary alcohols give
  1.    extreme reaction
  2.    no reaction
  3.    mild reaction
  4.    secondary alcohols
 Discuss Question
Answer: Option B. -> no reaction
Answer: (b).no reaction
Question 8. Methylated spirit use to satiate their desire instead of alcohol and end up in getting
  1.    blindness only
  2.    death only
  3.    lung cancer
  4.    blindness and death
 Discuss Question
Answer: Option D. -> blindness and death
Answer: (d).blindness and death
Question 9. The fuel gasohol is a mixture of
  1.    ethanol only
  2.    petrol only
  3.    methanol
  4.    ethanol and petrol
 Discuss Question
Answer: Option D. -> ethanol and petrol
Answer: (d).ethanol and petrol
Question 10. After the reaction, if excess ethanol is evaporated white solid crystals will be left of
  1.    sodium chloride
  2.    sodium magnate
  3.    sodium ethoxide
  4.    sodium hydroxide
 Discuss Question
Answer: Option C. -> sodium ethoxide
Answer: (c).sodium ethoxide

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