Science>Chemistry>Acids, Bases and Salts>Salts

HARD

Earn 100

Why is bleaching powder used for in the purification of water?

Important Questions on Acids, Bases and Salts

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Baking soda is a mixture of:

HARD

Science>Chemistry>Acids, Bases and Salts>Salts

How is washing soda prepared from sodium carbonate? Give its chemical equation. State the type of this salt. Name the type of hardness of water which can be removed by it?

HARD

Science>Chemistry>Acids, Bases and Salts>Salts

How is sodium hydroxide manufactured in industries? Name the process. In this process, a gas X is formed as a by-product. This gas reacts with lime water to give a compound Y, which is used as a bleaching agent in the chemical industry. Identify X and Y and write the chemical equation of the reaction involved.

EASY

Science>Chemistry>Acids, Bases and Salts>Salts

The chemical formula for plaster of Paris is:

EASY

Science>Chemistry>Acids, Bases and Salts>Salts

The

pH

of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Why is sodium hydrogen carbonate an essential ingredient in antacids?

EASY

Science>Chemistry>Acids, Bases and Salts>Salts

Write an equation to show the reaction between Plaster of Paris and water

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

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>Acids, Bases and Salts>Salts

Why should Plaster of Paris be stored in moisture proof containers?

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Name one salt whose solution has pH more than 7 and one salt whose solution has pH less than 7.

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

What is meant by water of crystallisation in a substance? How would you show that blue copper sulphate crystals contain water of crystallisation?

HARD

Science>Chemistry>Acids, Bases and Salts>Salts

Name the substance which on treatment with chlorine yields bleaching powder.

HARD

Science>Chemistry>Acids, Bases and Salts>Salts

Why is Plaster of Paris written as

{CaSO}_{4} . \frac{1}{2} H_{2} O

? How is it possible to have half a water molecule attached to

{CaSO}_{4}

?

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Write a chemical equation for the reaction of carbon dioxide with bleaching powder.

HARD

Science>Chemistry>Acids, Bases and Salts>Salts

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 .

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Complete the following reaction,

${({CaSO}_{4})}_{2} . H_{2} O + H_{2} O \to$

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

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

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Complete the following reaction:

NaCl + H_{2} O + {CO}_{2} + {NH}_{3} \to

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

What will happen if a solution of sodium hydrogen carbonate is heated?

Give the equation of the reaction involved.

MEDIUM

Science>Chemistry>Acids, Bases and Salts>Salts

Plaster of Paris should be stored in a moisture-proof container. Explain why?