Combustion can not take place without __________?

A. Hydrogen
B. Air
C. Oxygen
D. Argon

Submitted by: Mirza Musawer Jamil

Combustion can not take place without air. Air contains about 21% by volume of oxygen. Oxygen is essential for combustion to occur.

The planets visible to us without using a telescope are __________?
A. 3 B. 4 C. 5 D. 6...
The fruits without seed, like banana, are called_____________?
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A man can survive without food for atleast?
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Name the animal which can live without water in its entire life?
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A man can survive without food for at least?
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The only living cells in the body without blood supply is___________?
A. Pupil B. Nail C. Cornea D. Hair Submitted by: Mansoor Ahmed Suhag...
Animal without red blood cells is_________ ?
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Which insect can survive without a head for one or more weeks?
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At night, Plants intake __________ and release __________?
A. Oxygen – Carbon dioxide B. Carbon dioxide – Oxygen C. Oxygen – Carbon monoxide D. None of theseCarbon monoxide – Oxygen...
__________ is the atmospheric layer wherein the weather occurs.
A. Troposphere B. Stratosphere C. Mesosphere D. Thermosphere Submitted by: Muhammad Abdullah...