(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Hydrogen chloride gas is very soluble in water. It is dissolved in water to prepare hydrochloric acid by using an anti-suction device, as shown in the diagram. Very briefly explain, how this device prevents the suction of water into the flask, in which hydrogen chloride gas is produced.

Give reason for the following:
Dilute hydrochloric acid cannot be concentrated by distilling (boiling) the dilute acid.

Dilute hydrochloric acid is added in turn to a mixture of iron and sulphur and to the compound formed between iron and sulphur. Name the gas formed in each case.

Hydrogen chloride dissolves in water to form an acidic solution.

1. Name the experiment which demonstrates that hydrogen chloride is very soluble in water.
2. Give three distinct tests (apart from using an indicator) you would carry out with this solution to illustrate the typical properties of an acid.

(a) Name the experiment illustrate above.
(b) Which property of hydrogen chloride is demonstrated by this experiment?
(c) State the colour of the water that has entered the round-bottomed flask.

The diagram shows an apparatus for the laboratory preparation of hydrogen chloride.
(i) Identify A and B
(ii) Write the equation for the reaction
(iii) How would you check whether or not the gas jar is filled with hydrogen chloride?
(iv) What does the method of collection tell you about the density of hydrogen chloride.

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

(i) Identify the gas Y.
(ii) What property of gas Y does this experiment demonstrate?
(iii) Name another gas which has the same property and can be demonstrated through this experiment.

The following question is pertaining to the laboratory preparation of hydrogen chloride gas.

Write the equation for its preparation, mentioning the condition required.

The aim of the fountain experiment is to prove that

Define the following term : Hygroscopic substance

Define the following term : Dehydrating agent

Name the following:
Products obtained by treating zinc with dilute sulphuric acid.

Name the following:
Products obtained by treating ferrous sulphide with dilute sulphuric acid.

Name the following :
The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.

Name the following:
The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.

Name the following:

Gases obtained by treating carbon with hot concentrated sulphuric acid.

Name the Following:
The property used to prepare HCl and HNO₃ from H₂SO₄.

What would you observe in the following case?
Concentrated sulphuric acid is added to equal volumes of cold water.

What would you observe in the following case?
Hot concentrated sulphuric acid is added to sodium chloride crystals.

What would you observe in the following case?
Dilute sulphuric acid is added to ferrous sulphate solution.