Question 1 : The moisturizing the coal before introducing into furnace is called as:
1. moisturizing
2. filtering
3. tempering
4. combustion
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Question 2 : CNG is stored at a pressure of____
1. 281-621kg/cm²
2. 482-591kg/cm²
3. 200-248kg/cm²
4. 800-828kg/cm²
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Question 3 : Calculate the net calorific value of a coal sample having the following composition:C=80%, H=5%, O=4%, N=3%, S=3.5% and ash=5%
1. 7251.8cal/g
2. 7780.5cal/g
3. 7621.5cal/g
4. 7830.75cal/g
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Question 4 : Modification of the dulong's formula can be done by considering the______
1. latent heat
2. heat
3. fuel state
4. liquid fuels
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Question 5 : What is the catalyst used in catalytic polymerization?
1. Phosphoric acid
2. Al₂O₃
3. Al₂(siO₃)₃
4. Zirconium oxide
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Question 6 : What are the main applications of lignite?
1. domestic fuel
2. railway engines
3. used for steam generation in thermal power plant
4. in vehicles
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Question 7 : To remove sulphur compounds from petroleum, it is treated with_____
1. copper nitrate
2. copper oxide
3. magnesium chloride
4. sodium chloride
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Question 8 : During metallurgical operations, n₂ causes ___________
1. hardness to sample
2. softness to sample
3. moisture to sample
4. heat to sample
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Question 9 : The calorific value of LPG is generally _______ than that of coal.
1. higher
2. lower
3. half
4. very lesser
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Question 10 : The pressure applied in vapour phase cracking is __________
1. 10-20kg/cm²
2. 100kg/cm²
3. 50kg/cm²
4. 80kg/cm²
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