Lakshya Education MCQs

Question: Which of the following gas has the highest calorific value?
Options:
A. Coal gas
B. Producer gas
C. Mond gas
D. Blast furnace gas
Answer: Option A

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More Questions on This Topic :

Question 1. The value of cp/cv for air is
  1.     1
  2.     1.4
  3.     1.45
  4.     2.3
Answer: Option B
Question 2. Carbonization of coal consists of
  1.     Drying and crushing the coal to a fine powder
  2.     Moulding the finely ground coal under pressure with or without a binding material
  3.     Heating the wood with a limited supply of air to temperature not less than 280°C
  4.     None of the above
Answer: Option D
Question 3. In a free expansion process
  1.     Work done is zero
  2.     Heat transfer is zero
  3.     Both (A) and (B) above
  4.     Work done is zero but heat increases
Answer: Option C
Question 4. Carbonization of coal consists of
  1.     Drying and crushing the coal to a fine powder
  2.     Moulding the finely ground coal under pressure with or without a binding material
  3.     Heating the wood with a limited supply of air to temperature not less than 280°C
  4.     None of the above
Answer: Option D
Question 5. When cut-off ratio is ________; the efficiency of diesel cycle approaches to otto cycle efficiency
  1.     1/4
  2.     Zero
  3.     1/5
  4.     2
Answer: Option B
Question 6. Which of the following has the highest calorific value?
  1.     Anthracite coal
  2.     Bituminous coal
  3.     Peat
  4.     Lignite
Answer: Option A
Explanation :

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