Question

Foss
The process of be
Combustion requires fuel, oxys
Water should not be used to put out fire cause
Exercise
(c) hydrocarbons
(d) charcoal
0
(d) pollutants
(c)non-luminous zone
(d) none of the
d
A. Multiple choice type questions:
Compounds containing hydrogen and carbon are called
(a)organisms
(b)coal
2
Flames have different zones of different
(a)combustion 0 (
(b) temperature
(c) fuels
3 The middle zone of flame is a bright
(a) dark zone
(b) luminous zone O
Combustion requires fuel, oxygen and
(b) carbon dioxide
Natural gas contains methane about
(a) 80%
(b) 30%
(c) heat
(d) hydrogen
(a)gas
O
(c) 90%
(d) 50%
5.
ill in the blanks :
is the simplest hydrocarbon.​

Answer 1

Answer:

option (a) hydrocarbon

option (b) coal

option (b) temprature

option (a) dark zone

Combustion requires fuel, oxygen and carbon dioxide

option (a) 80%

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