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LAKHMIR SINGH & MANJIT KAUR-COMBUSTION AND FLAME-EXERCISES
- What makes the middle zone of a candle flame luminous (or light-giving...
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- What is global warming?
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- Name the gase whose increasing percentage in air in leading to global ...
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- State a harmful effect which can be caused by global warming.
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- Explain how, burning of fuels such as coal, petrol and diesel leads to...
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- Which of the following substances has the lowest ignition temperature ...
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- One of the following is not a combustible substance. This one is :
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- Which of the following is not used in making matchsticks these days ?
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- Which of the following undergoes spontaneous combustion ?
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- Which of the following statement is not correct about carbon dioxide a...
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- Fires in underground coal mines usually occur due to the :
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- The calorific value of a fuel is 40000 kj/kg. This fuel is most likely...
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- Which of the following has the fuels has the highest calorific value ?
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- On a cold winter night, the persons sleeping in a room with closed do...
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- Which of the following burns without producing a flame ?
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- Which of the following fuels has the lowest calorific value ?
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- Which of the following is the main cause of global warming ?
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- Which of the following gas does not contribute to the formation of aci...
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- Which of the following is the most environment friendly fuel to be use...
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- Which of the following does not involve a combustion reaction ?
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