Practice Pakistan's most useful MCQs for competitive exams

Gross calorific value will be equal to the net calorific value for __________________?

• (A)  H2
• (B)  C2H2
• (C)  CO
• (D)  C2H6

Answer

Submitted By :Ali Uppal

Which of the following is not endothermic ?

• (A)  Cracking
• (B)  Reforming
• (C)  Gasification
• (D)  Partial oxidation

Answer

Submitted By :Ali Uppal

Cannel coal and boghead coal are the examples of _________________?

• (A)  Humic coals
• (B)  Liptobiolites
• (C)  Sapropelic coals
• (D)  None of these

Answer

Submitted By :Ali Uppal

Main constituent of the gas produced from a gobar gas plant is___________________?

• (A)  CO2
• (B)  CH4
• (C)  H2
• (D)  CO

Answer

Submitted By :Ali Uppal

Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?

• (A)  5
• (B)  21
• (C)  40
• (D)  48

Answer

Submitted By :Ali Uppal

‘Wind loss’ resulting from unscientific storage of coal may be the order of about _____________ percent?

• (A)  2.5
• (B)  7.5
• (C)  10.5
• (D)  14.5

Answer

Submitted By :Ali Uppal

Laboratory gas is obtained by the cracking of____________________?

• (A)  Gasoline
• (B)  Diesel
• (C)  Fuel oil
• (D)  Kerosene

Answer

Submitted By :Ali Uppal

Coal is pulverised before burning in large capacity boiler furnaces mainly to____________________

• (A)  Ensure its complete combustion
• (B)  Facilitate easy ash removal
• (C)  Enhance its calorific value
• (D)  Provide trouble free operation

Answer

Submitted By :Ali Uppal

Mott and Wheeler test is conducted on coke to find its _____________________?

• (A)  Reactivity with O2
• (B)  Abradability
• (C)  Phosphorus content
• (D)  Volatile matter content

Answer

Submitted By :Ali Uppal

A coal having high volatile matter content will ________________?

• (A)  Give less yield of tar and gas on carbonisation
• (B)  Burn with a small non-smoky flame
• (C)  Have a very high calorific value
• (D)  None of these

Answer

Submitted By :Ali Uppal