EASY
10th CBSE
IMPORTANT
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Write the chemical name and formula of bleaching powder.

Important Questions on Acids, Bases And Salts

HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 15
Why does bleaching powder smell of chlorine when exposed to air?
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 15
Write chemical equation to represent the action of dilute hydrochloric acid on bleaching powder.
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 16
A compound X of sodium forms a white powder. It is a constituent of baking powder and is used in some antacid prescriptions. When heated, X gives out a gas and steam. The gas forms a white precipitate with limewater. Write the chemical formula and name of X and the chemical equation for its decomposition on heating. What is its role in baking powder and in antacids?
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 17
Identify the compound of calcium that is a yellowish-white powder and is used for disinfecting drinking water. How is it manufactured? Write the chemical equation for the reaction involved. What happens when it is left exposed to air?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 18
Identify the compound of calcium that is used for plastering of fractured bones. With the help of a chemical equation, describe how this compound is prepared. What special precaution should be taken during the preparation of this compound?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 1
What is the name of compound CaSO4.12H2O. Is it possible to have half molecule of water? Explain how the above formula is correct.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 1
What do you understand by the terms: (a) hydrated salt (b) water of crystallisation? Give one example of each.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 2 - Acids, Bases And Salts>EXERCISE 2C>Q 2
Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for the removal of hardness of water and a gas C is evolved. The gas C when passed through lime water turns it milky. Identify A, B and C.