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HPTET-Chemistry-Mock-Test-15

 TET-CTET Chemistry MCQ Type Questions Set-15

TET-CTET Chemistry MCQ Type Questions Set-15

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Question 1-10

(1) Water is used to extinguish fire because it ……………..
(A)  Lowers the ignition temperature of the burning substance
(B)  Raises the ignition temperature of the burning substance
(C)  Cools the burning substance to a temperature below its ignition temperature
(D)  Conducts heat


(2) Which of the following you will choose for extinguishing fire?
(A)  Dry powder type extinguisher
(B)  Soda acid extinguisher
(C)  Liquid carbon dioxide extinguisher
(D)  A spray of water


(3) Which of the following is not the attribute of a good fuel?
(A)  Low calorific value
(B)  Cheep and easily available
(C)  Moderate rate of combustion
(D)  Safe to handle


(4) In which zone of a candle, no combustion take place?
(A)  inner
(B)  middle
(C)  outer
(D)  all the three zone


(5) SO2 and NO2 cause pollution by increasing …………..
(A)  alkalinity
(B)  acidity
(C)  buffer solution
(D)  none


(6) To control electrical fire which of the following is used?
(A)  Sand
(B)  Water
(C)  Solid carbon tetrachloride
(D)  Foamite


(7) Which cannot control fire due to oils?
(A)  Fire extinguisher
(B)  Foamite
(C)  Sand
(D)  Water


(8) Burning coal in a closed room will produce …………….
(A)  carbon dioxide
(B)  nitrogen oxides
(C)  sulphur dioxide
(D)  carbon monoxide


(9) If green house effect or global warming remains unchecked, it will alter ……………...
(A)  Temperature
(B)  Sea level
(C)  Rainfall
(D)  All of these


(10) Burning of phosphorous is an example of ………………
(A)  Rapid combustion
(B)  Slow combustion
(C)  Spontaneous combustion
(D)  Incomplete combustion




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