Lakshya Education MCQs

Question: Conversion achieved in HNO₃ synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by
A.Decreasing the pressure
B.Decreasing the temperature
C.Increasing the temperature
D.None of these
Answer: Option C

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Question 1. Reaction of anhydrous liquid ammonia with orthophosphoric acid produces
  1.    Ammonium phosphate
  2.    Superphosphate
  3.    Triple superphosphate
  4.    None of these
Answer: Option A
Question 2. The optimum size of the ammonia plant is __________ tons/day.
  1.    10
  2.    100
  3.    1000
  4.    1000C
Answer: Option C
Question 3. Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)
  1.    Use coal for heating purpose
  2.    Gasify coal to get hydrogen from coal gas
  3.    Use coal as filler in fertiliser
  4.    Use coal as conditioner in fertiliser
Answer: Option B
Question 4. Which of the following fertilisers contains the least percentage of nitrogen?
  1.    Liquid ammonia
  2.    Urea
  3.    Ammonium phosphate
  4.    Ammonium sulphate
Answer: Option C
Question 5. Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.
  1.    5
  2.    20
  3.    50
  4.    65
Answer: Option B
Question 6. Iron is not used alone as a catalyst in ammonia synthesis, because
  1.    Its activity declines rapidly, if heated to above 520°C
  2.    It decomposes ammonia
  3.    It gets oxidised above 500°C
  4.    None of these
Answer: Option A

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