Oxygen

IMPORTANT

Oxygen: Overview

This Topic covers sub-topics such as Combustion, Decomposition Reactions, Uses of Oxygen, Production of Oxygen, Decomposition of Potassium Permanganate, Discovery of Oxygen by Joseph Priestley, Occurrence of Oxygen and, Necessity of Oxygen for Burning

Important Questions on Oxygen

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Production of oxygen from potassium permanganate is an example of _____ reaction.

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A gas obtained during the thermal decomposition of potassium permanganate is _____.

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Write the chemical equation for the decomposition of potassium permanganate.

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On heating, potassium permanganate yields:

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Who discovered oxygen?

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What are the uses of oxygen?

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_____ is the process of burning of substances in the air with the evolution of heat and light.

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Which of the following substance is non-combustible in nature?

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When magnesium ribbon burns in air, it produces

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What ignites fire?

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A substance breaks into two simple small molecules then the reaction is called- 

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Give one example of each of the following:
A gas needed for burning 

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Burning uses up oxygen.

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Fuel, air and _____ temperature are necessary required for the combustion.

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What are the products of any combustion of any fuel?

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What are the various required conditions of the combustion?

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Explain the process of combustion.

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Which of the following gases is necessary for burning? 
 

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A burning candle gets extinguished after time if an inverted tumbler is put over it. Why?

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Choose the appropriate word for the picture given below.

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