Question

b) liquid fuel
3
4
d) throwing petrol
3. Which fuel need not burn with a flame?
a) solid fuel
c) gaseous fuel d) all fuels
4. The zone that produces bright light in a
candle flame is the
zone.
a) non-luminous b) luminous
c) blue
d) dark
5. The gas formed by incomplete combustion
of carbon is -
a) carbon monoxide b) carbon dioxide
C) soot
d) water vapour
6. The hottest zone in a candle flame is the
zone.
a) non-luminous b) luminous
c) blue
d) dark
5
6.
7
7. The harmful by-product of a candle flame is
8
9
a) molten
wax b) carbon monoxide
c) water
vapour
d) light
8. Which fuel has the highest calorific value?
a) petrol
b) LPG
c) CNG
d) hydrogen
1
84​

Answer 1

Answer:

8.LPG

7.Carbon monoxide

6.non luminious zone

4.luminious zone

Answer 2

4. B

5. A

6. A

7. B

8. B

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