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are basic in nature.

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Important Questions on Air and Atmosphere

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Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides? Give two examples of amphoteric oxides.
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
The nature of solution obtained by dissolving soluble metal oxide in water is:
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
Which of the following is amphoteric oxide?
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides?
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Science>Chemistry>Air and Atmosphere>Air and its Components

What are amphoteric oxides? Give an example.

EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides? 
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Science>Chemistry>Air and Atmosphere>Air and its Components

The metals which can form amphoteric oxides with oxygen are:

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Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides?
HARD
Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides? Give an example. Write balanced chemical equations to justify your answer.
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
Give reasons for the following: Zinc oxide is considered an amphoteric oxide.
HARD
Science>Chemistry>Air and Atmosphere>Air and its Components
What are amphoteric oxides? Give two examples of amphoteric oxides.
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
Give reasons for the following: Articles made of aluminium do not corrode even though aluminium is an active metal.
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
Why is aluminium called a self-protecting metal?
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Science>Chemistry>Air and Atmosphere>Air and its Components

Write down the changes that will be seen in each instance and explain the reason behind it.

Zinc oxide was added to dilute HCl and zinc oxide was added to dilute NaOH.

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Science>Chemistry>Air and Atmosphere>Air and its Components
Give reasons for the following: Aluminium easily combines with oxygen but still it can be used for making kitchen utensils.
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Science>Chemistry>Air and Atmosphere>Air and its Components
Which of the following are amphoteric oxides:
MgO,ZnO,P2O3,Al2O3;NO2
EASY
Science>Chemistry>Air and Atmosphere>Air and its Components
Give reasons for the following: Zinc oxide is called an amphoteric oxide.
HARD
Science>Chemistry>Air and Atmosphere>Air and its Components
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
HARD
Science>Chemistry>Air and Atmosphere>Air and its Components
Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide :
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Science>Chemistry>Air and Atmosphere>Air and its Components
What happens when aluminium oxide and magnesium oxide react with water?