MEDIUM

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What is brine solution?

Important Questions on Substances in Common Use

EASY

Science>Chemistry>Substances in Common Use>Important salts in daily life

Saponification of coconut oil yields glycerol and

HARD

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write the chemical name of

{Na}_{2} {CO}_{3} . 10 H_{2} O

and

{Na}_{2} {CO}_{3}

. Write the significance of

10 H_{2} O

. Mention the term used for water molecules attached with salt. With the help of chemical equation explain the method of preparation of both

{Na}_{2} {CO}_{3} . 10 H_{2} O

and

{Na}_{2} {CO}_{3}

. Also, list two uses of

{Na}_{2} {CO}_{3} . 10 H_{2} O .

EASY

Science>Chemistry>Substances in Common Use>Important salts in daily life

What is washing soda? State two properties and two uses of washing soda.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write the chemical equation for the action of atmospheric

{CO}_{2}

gas on bleaching powder when left exposed in open.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

State two important uses of bleaching powder.

EASY

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write the chemical formula of (i) soda ash and (ii) sodium carbonate decahydrate.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Name the sodium compound which is used for softening hard water.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

If someone is suffering from acidity in stomach, which of the following would you suggest as a remedy. Orange juice, coca-cola, baking soda solution?

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write name and chemical formula of two such compounds whose one formula unit is associated with

10

and

2

water molecules respectively.

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Name one salt whose solution has

pH

more than

7

and one salt with

pH

less than

7

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Write the formula of sodium chloride and sodium carbonate. Explain why an aqueous solution of sodium chloride is neutral, but an aqueous solution of sodium carbonate is basic (or alkaline). Write chemical equations of the reactions involved.

HARD

Science>Chemistry>Substances in Common Use>Important salts in daily life

What happens when bleaching powder reacts with dilute sulphuric acid? Give equation of the reaction involved.

EASY

Science>Chemistry>Substances in Common Use>Important salts in daily life

What is baking soda? Write the chemical name of baking soda. Give the important uses of baking soda. How does baking soda differ chemically from washing soda?

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

Why is sodium hydrogen carbonate an essential ingredient in antacids?

MEDIUM

Science>Chemistry>Substances in Common Use>Important salts in daily life

State two uses of washing soda.

HARD

Science>Chemistry>Substances in Common Use>Important salts in daily life

What is bleaching powder? How is bleaching powder prepared? Write chemical equation of the reaction involved in the preparation of bleaching powder.

HARD

Science>Chemistry>Substances in Common Use>Important salts in daily life

What is the common name of the compound