The Most Abundant Element in the Earth’S Crust.

The most abundant element in the earth’s crust.

एक शब्द/वाक्यांश उत्तर

Oxygen.

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Properties of Oxygen

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अध्याय 7: Air and Atmosphere - Exercise II

अध्याय 7 Air and Atmosphere
Exercise II | Q 1.1

A chemical called oxygenated water.

Why is hydrogen peroxide preferred in the preparation of oxygen gas ?

What happens when a glowing splinter is introduced in a jar containing oxygen ?

Fill in the blank:

Oxygen is slightly _________ than air.

Fill in the blank:

Manganese dioxide acts as a _________.

How will you identify oxygen in the laboratory ?

Complete and balance the following equation

S + O₂ →

State any four physical properties of oxygen gas.

Give tests for oxygen gas.

Give reasons for the following:

patients suffering from lung problems are kept in an oxygen tent.