Skip to content Home Questions Play Progress Daily Challenge Questions › Chemistry › Combustion and Flame Questions QUESTION Compounds containing which listed non-metallic element in petroleum can contribute to corrosion in engines and refinery equipment? Open question → QUESTION In NCERT’s account of Indian mineral and energy resources, which coal is described as the most popular in commercial use? Open question → QUESTION Which listed gas has been used improperly for artificial fruit ripening and is prohibited for that purpose by FSSAI? Open question → QUESTION Which listed gas is associated with both coal mines and marsh gas? Open question → QUESTION Assertion (A): Methane is not a major component of biogas. Reason (R): Biogas is produced by anaerobic microbial decomposition of organic matter. Open question → QUESTION Which listed vehicle fuel is natural gas, mainly methane, stored at high pressure? Open question → QUESTION What provides the initial heat when a conventional safety match is rubbed on its designated striking surface? Open question → QUESTION An early match-head mixture described in NCERT’s account of match development contained which of the following substances? I. Antimony trisulphide II. Potassium chlorate III.… Open question → QUESTION Which of the following processes releases heat into the surroundings? Open question → QUESTION What is the usual name for the burning process in which a substance reacts with oxygen and releases heat? Open question → QUESTION In the usual paper-cup demonstration, why can the water-wetted part of the cup resist catching fire while liquid water remains in it? Open question → QUESTION Consider the following statements: 1. Ignition temperature is the lowest temperature at which a substance catches fire. 2. Kerosene has a high ignition temperature… Open question → Home Questions Play Progress 