(English Medium) ICSE Class 10 - CISCE Important Questions for Chemistry

State your observation When moist starch iodide paper is introduced into chlorine gas.

Study the figure given below and answer the questions which follow:

1. Identify the gas Y.
2. What property of gas Y does this experiment demonstrate?
3. Name another gas which has the same property and can be demonstrated through this experiment.

Name the gas that is produced in the given cases :

An action of dilute hydrochloride acid on sodium sulphide.

Dry hydrogen chloride gas can be collected by ________ displacement of air. (downward / upward)

For the preparation of hydrochloric acid in the laboratory:

What arrangement is done to dissolve hydrogen chloride gas in water?

Give a chemical test to distinguish between the given pairs of chemicals:

Sodium chloride solution and Sodium nitrate solution

When sodium chloride is heated with concentrated sulphuric acid below 200°C, one of the products formed is ______.

Distinguish between the following pairs of compounds using the reagent given in the bracket.
Mangenese dioxide and copper (II) oxide. (using concentrated HCl) 

How will you distinguished between dilute HCl and dilute H₂SO₄ using lead nitrate solution?

State your observation of the following case:

When calcium hydroxide is heated with ammonium chloride crystals.

State the following:

The drying agent used in the laboratory preparation of HCl gas.

Write a balanced equation for the following conversion:

Sodium chloride from sodium sulphite and dilute hydrochloric acid.

Identify the terms for the following:

A method used to collect HCl gas.

Distinguish between the following:

Dilute HCl and dilute HNO₃ [using silver nitrate solution]

Differentiate between the following pair based on the criteria given in the bracket:

Sulphuric acid and hydrochloric acid [type of salts formed]

Convert the following reaction into a balanced chemical equation:

Ferrous sulphide to hydrogen sulphide using hydrochloric acid.

The following table is related to an industrial process of an acid.

Identify (a), (b) and (c).

Assertion (A): Dry hydrogen chloride gas is collected by the upward displacement of air.

Reason (R): Hydrogen chloride gas is lighter than air.

The ratio between the volumes occupied by 4.4 grams of carbon dioxide and 2 grams of hydrogen gas is ______.

______ does not form an acid salt.