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

Describe two tests to identify ammonia and ammonium ions in an aqueous solution.

Choose the correct word or phrase from the bracket to complete the following sentence: 
 Heating ammonium chloride with sodium hydroxide produces ______.

Choose the correct word or phrase from the bracket to complete the following sentences.

Heating solution of ammonium chloride with sodium nitrite produces ______

State your observation for the following cases

(i) Ammonia gas is burnt in an atomosphere of oxygen in the absence of a catalyst

(ii) Glass rod dipped in ammonium hydroxide is brought near the mouth of the concentrated hydrochloric acid bottle

The diagram shows a simple arrangement of the fountain experiment:

(i) Name the two gases you have studied which can be used in this experiment

(ii) What is the common properly demonstrated by this experiment

 Name the other ion formed when ammonia dissolves in water

Name the gas evolved when the following mixtures are heated.

Calcium hydroxide and ammonium chloride

Name the gas evolved when the following mixtures are heated:

Sodium nitrate and ammonium chloride.

Identify the substance underlined, in the following case:

Cation that does not form a precipitate with ammonium hydroxide but forms one with sodium hydroxide.

Identify the substance underlined, in the following case:

 A solid formed by reaction of two gaes, one of which is acidic and the other basic in nature.

State one relevant observation of burning of ammonia in air.

Given one test can be used to detect the presence of the ion produced

The diagram shows an experimental set up for the laboratory preparation of a pungent smelling gas. The gas is alkaline in nature.

1. Nature the gas collected in the jar.
2. Write the balance equation for the above preparation.
3. How is the gas being collected?
4. Name the drying agent used.
5. How will you find that the jar is full of gas?