Question

(d) charcoal
0 (d) pollutants
A. Multiple choice type questions:
Compounds containing hydrogen and carbon are called
Calorganisms
O coal
(c) hydrocarbons
Flames have different zones of different
(a combustion O (b) temperature
(c) fuels
The middle zone of flame is a bright
(a) dark zone
(b) luminous zone o (c)non-luminous zone
Combustion requires fuel, oxygen and
O (b) carbon dioxide
(c) heat
Natural gas contains methane about
(a 80%
(b)30%
(c) 90
(d) none of these
(d) hydrogen
Ο Ο
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Answer 1

Answer:

a) hydrocarbon.

Explanation:

compound containing hydrogen and carbon is known as hydro carbon.

Answer 2

Answer:

option (C) Hydrocarbons

is true

hope this helps u