Which of the following substances has the lowest ignition temperature?, kerosene, spirit, diesel, mustard oil, One of the following is not a combustible substance. This one i:, alcohol, hydrogen, asbestos, chaff, Which of the following is not used for making matchsticks these days?, potassium chlorate, white phoshorous, antimony tri sulphide, red phosphorous, Which of the following undergoes spontaneous combustion?, yellow phosphorous, red phosphorous, white phosphorous, brown sulphur, Which of the following statement is not correct about carbon dioxide as a fire extinguisher for electrical fires?, it is heavier than air, it is lighter than air, it is not combustible, it does not support combustion, Fires in underground coal mines usually occur due to the:, explosive combustion, deliberate combustion, spontaneous combustion, rapid combustion, Which of the following fuels has the highest calorific value?, natural gas, liquefied petroleum gas, coal gas, hydrogen gas, On a cold winter night, the persons sleeping in a room with closed doors and windows with a coal fire burning inside may die due to the excessive accumulation of:, nitrogen monoxide, sulphur dioxide, carbon dioxide, carbon monoxide, The outer-most zone of a candle is the :, least hot part, coldest part, hottest part, moderately hot part, Which of the following burns without producing a flame?, camphor, coke, cooking gas, kerosene
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Combustion & Flame
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