Coal burns with
flame
only glow
both flame and glow
none of the above
B.
only glow
At airports and petrol pumps hydrocarbon fire extinguishers are used, not the soda-acid fire extinguisher. Why ?
Which of the following has the lowest ignition temperature ?
petrol
kerosene
coal
LPG
The substances which have very low ignition temperature will
catch fire easily
will not catch fire
catch fire after some time
none of the above
Burning of fossil fuels causes pollution. Comment.
