Question 11 : For endothermic reactions, Gibbs free energy change has to be?
1. negative
2. positive
3. zero
4. none of the mentioned
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Question 12 : Spontaneity of a chemical reaction depends on?
1. Enthalpy of reaction
2. Energy of reaction
3. Gibbs Free Energy
4. None of the mentioned
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Question 13 : Which of these is not a lighter fraction of fuel oil?
1. gasoline
2. aviation fuel
3. heavy diesel oil
4. boiler fuel
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Question 14 : Which of the following property is the inverse of the power required to grind coal to a particular size for burning?
1. heating value
2. weatherabillity
3. grindability
4. sulphur content
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Question 15 : Softening temperature of coal is a measure of which tendency of coal?
1. clinkering tendency
2. coking tendency
3. caking tendency
4. size tendency
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Question 16 : Effect of dissociation is lower for lean mixtures.
1. True
2. False
3.
4.
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Question 17 : Which of these is not a form of bioconversion route?
1. direct combustion
2. fermentation
3. thermochemical conversion
4. biochemical conversion
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Question 18 : The heat transferred when the H₂O in the products is in the vapour state is called?
1. HCV
2. LCV
3. HHV
4. None of the mentioned
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Question 19 : Which of these is not a type of drive of variable speed control?
1. variable speed turbine
2. hydraulic coupling
3. multiple speed ac motor
4. electronically adjustable turbine drive
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Question 20 : Low temperature carbonisation
1. produces less quantity of tar than high temperature carbonisation
2. is mainly producing smokeless domestic coke
3. is meant for production of 'metallurgical coke'
4. produces higher temperature gas than high temperature carbonisation
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