NCERT Class 10 Chapter 2 Acids; Bases and Salts CBSE Board Sample Problems Very Short Answer

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Question

Give the chemical name of compound present in tooth enamel. What is the nature of compound?

Solution

Chemical Name: Nature

Calcium Phosphate: Basic

Question

Assertion: Acids should be used carefully.

Reason: All acids are corrosive.

Solution

Assertion is true and reason is the correct explanation of assertion.

Question

What do you understand by olfactory indicators?

Solution

Some indicators show a change in their odour in the presence of acids or bases, such indicators are called olfactory indicators. They are very useful for visually challenged students because such students cannot use other indicators. Clove, vanilla and onion are examples of olfactory indicators.

Question

What is the common name of the compound ? Give its anyone use.

Solution

Bleaching powder. It is used to disinfectant drinking water to make it free from germs.

Question

What is neutralization reaction?

Solution

Neutralization reaction is a reaction between an acid and base to form salt and water. It is an exothermic reaction.