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Basic oxides dissolve in water to give a alkali.

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Important Questions on Acids, Bases and Salts

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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Which one of the following oxide is insoluble in water?
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
The nature of solution obtained by dissolving soluble metal oxide in water is:
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Which of the following oxide turns red litmus into blue?
MEDIUM
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases

The metals which can form amphoteric oxides with oxygen are:

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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases

What are amphoteric oxides? Give an example.

MEDIUM
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides? Give two examples of amphoteric oxides.
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Which of the following is amphoteric oxide?
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides?
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides? 
MEDIUM
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides?
HARD
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides? Give an example. Write balanced chemical equations to justify your answer.
MEDIUM
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases

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>Acids, Bases and Salts>Preparation of Bases
Why is aluminium called a self-protecting metal?
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Give reasons for the following: Zinc oxide is considered an amphoteric oxide.
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Give reasons for the following: Aluminium easily combines with oxygen but still it can be used for making kitchen utensils.
MEDIUM
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Which of the following are amphoteric oxides:
MgO,ZnO,P2O3,Al2O3;NO2
HARD
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
What are amphoteric oxides? Give two examples of amphoteric oxides.
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Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
State reasons for the following: Aluminium oxide is called an amphoteric oxide.
EASY
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Give reasons for the following: Zinc oxide is called an amphoteric oxide.
HARD
Science>Chemistry>Acids, Bases and Salts>Preparation of Bases
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.