Fuel

11.	The amount of heat that is obtained as a result of complete combustion of one gram of a fuel in air or oxygen is called
	A. combustion
	B. calorific value
	C. thermal heat
	D. Combustion heat Option”C” is correct

12.	The essential conditions for a good fuel are
	A. it should have higher thermal temperature
	B. it should be easily combustible
	C. Its ignition temperature should be suitable
	D. all of these Option”D” is correct

13.	The necessary conditions for the process of combustion are
	A. presence of combustible material
	B. presence of combustion nutrients
	C. Receipt of combustion heat
	D. All of the above Option”D” is correct

14.	The lowest temperature at which a substance starts burning is called
	A. thermal heat
	B. Combustion heat
	C. calorific value
	D. all of these Option”B” is correct

15.	what type of combustion process is respiration
	A. rapid combustion
	B. slow combustion
	C. spontaneous combustion
	D. explosion Option”B” is correct

16.	The process of combustion that takes place without any external heat is called
	A. rapid combustion
	B. slow combustion
	C. spontaneous combustion
	D. explosion Option”C” is correct

17.	process of combustion in which heat and light are produced in a short time
	A. rapid combustion
	B. slow combustion
	C. spontaneous combustion
	D. explosion Option”A” is correct

18.	Match List-I with List-II and select the correct answer from the code given below the Lists : List-I (Fuel Gas) A. CNG B. LPG C. Coal Gas D. Water Gas List-II (Major Components 1. Carbon Monoxide, Hydrogen 2. Butane, Propane 3. Methane, Ethane 4. Hydrogen, Methane, Carbon Monoxide
	A. A → 2, B → 1, C → 3, D → 4
	B. A → 2, B → 4, C → 3, D → 1
	C. A → 3, B → 2, C → 4, D → 1
	D. A → 3, B → 2, C → 1, D → 4 Option”C” is correct

19.	How does sodium bicarbonate solution used in fire extinguishers react to form carbon dioxide?
	A. nitric acid
	B. urticaria
	C. acetic acid
	D. carbolic acid Option”B” is correct

20.	Why is sodium bicarbonate used as a fire extinguisher?
	A. From what heat does fire produce carbon dioxide
	B. From what heat does the fire generate this carbon CO
	C. fire from which heat it produces oxygen
	D. fire from which heat it produces water Option”A” is correct

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