The gas required for combustion is …
hydrogen
carbon dioxide
oxygen
nitrogen
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Like fuel the sun also provides heat and light. The process taking place in the sun is called…
Nuclear process
Burning
All of these
Combustion
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CNG and LPG are the examples of…
Liquid fuels
They are not fuels
Solid fuels
Gaseous fuels
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Which one of the following will show spontaneous combustion?
Calcium
Carbon
Sulphur
Sodium
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Which fuel is the ideal fuel to be used at home ?
Coal
CNG
LPG
Wood
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There are following zones of a flame…
Three
No any zone
Four
Two
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Drag and match
Solid fuel —
Liquid fuel —
Gaseous fiiel —
petrol, kerosene
1 of 3.
LPG, methane
2 of 3.
coal, wood
3 of 3.
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Ignition temperature is…
Higher temperature at catch fire
Any temperature
None of these
Lowest temperature at catch fire
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Which of the following can be used to extinguish fire at the petrol pump ?
Blanket
Carbon dioxide
Water
None of these
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The gas produced in the working of soda-acid type fire extinguisher is…
carbon dioxide
sulphur dioxide
hydrogen
oxygen
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