Oxygen

IMPORTANT

Oxygen: Overview

In this topic, we will learn about the physical and chemical properties of oxygen. It discusses the preparation and uses of dioxygen and ozone. We will also learn about the oxides and their arrangement in the periodic table.

Important Questions on Oxygen

HARD
IMPORTANT

Dioxygen can be prepared by

EASY
IMPORTANT

 The thermal decomposition of Ag2O gives 

EASY
IMPORTANT

Heating oxides of less _____ metals produces dioxygen.

EASY
IMPORTANT

2 Ag2O623 K 4Ag +?

Complete the above reaction.

EASY
IMPORTANT

Heating oxides of less active metals produces dioxygen.

EASY
IMPORTANT

In the preparation of dioxygen, on thermal decomposition of _____ produces silver addition of oxygen.

EASY
IMPORTANT

Write the chemical equation for thermal decomposition of silver oxide.

MEDIUM
IMPORTANT

Oxygen is prepared by:

EASY
IMPORTANT

Which of the following compounds liberate oxygen on heating?

MEDIUM
IMPORTANT

On electrolysis of dil. sulphuric acid using Platinum Pt electrode, the product obtained at anode will be

EASY
IMPORTANT

Complete the following reactions -

4 Al +3 O2_____

HARD
IMPORTANT

How is oxygen prepared by thermal decomposition of certain metallic oxides?
 

MEDIUM
IMPORTANT

Why is sulphur a solid and dioxygen a gas?

EASY
IMPORTANT

Complete the following reactions -

C2H4+O2_____

HARD
IMPORTANT

Which of the following element does not react directly with oxygen?

Zn, Ti, Pt, Fe

EASY
IMPORTANT

Which of the following reactions of potassium superoxide supply oxygen gas in the breathing equipments used in space and submarines?
(a) Reaction of superoxide with nitrogen in the exhaled air.
(b) Reaction of superoxide with moisture in the exhaled air.
(c) Reaction of superoxide with carbon dioxide in the exhaled air.

MEDIUM
IMPORTANT

Sulphur trioxide can be obtained by which of the following reaction.

MEDIUM
IMPORTANT

The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon are

MEDIUM
IMPORTANT

Which of the following does not give oxygen on heating?

EASY
IMPORTANT

Potassium ozonide on decomposition gives