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

Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?

Dilute sulphuric acid will produce a white precipitate when added to a solution of ______.

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.

Write the observation for the following:

Decomposition of bicarbonates by dil. H₂SO₄.

\[\ce{2NaHCO3 + H2SO4 -> Na2SO4 + 2H2O + 2CO2}\]

Choose the correct answer:
The salt which in solution gives a pale precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:

State two observations when
A few crystals of KNO₃ are heated in a hard glass tube

Distinguish between the following pair of compounds using the test given with brackets:

Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)

State your observation of the following case:

When dilute hydrochloric acid is added to sodium carbonate crystals.

Identify the anion present of the following compound:
A salt M on treatment with concentrated sulphuric acid produces a gas which fumes in moist air and gives dense fumes with ammonia.

Identify the anion present of the following compound:
A salt D on treatment with dilute sulphuric acid produces a gas which turns lime water milky but has no effect on acidified potassium dichromate solution

From the list of the following salts choose the salt that most appropriately fits the description given in the following :
[ AgCl, MgCl₂, NaHSO₄, PbCO₃, ZnCO₃, KNO₃, Ca(NO₃)₂ ]

(i) A deliquescent salt
(ii) An insoluble chloride
(iii) On heating this salt gives a yellow residue when hot and white when cold
(iv) On heating this salt, a brown coloured to prepare the following salts:

Give balanced chemical equation to prepare the following salt:
Lead sulphate from lead carbonate

Give balanced chemical equation to prepare the following salt:
Sodium sulphate using dilute sulphuric acid

Identify the gas evolved and give the chemical test in the following case:

Dilute hydrochloric acid reacts with sodium sulphite.

Identify the gas evolved and give the chemical test in the following case:

Dilute hydrochloric acid reacts with iron (II) sulphide.

Identify the salts P and Q from the observation given below:
On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution. Which is soluble in ammonium hydroxide solution.

Answer the following question related to salts and their preparations:

What kind of salt is prepared by precipitation?

Explain the following method with example. 

Displacement

Give a balanced equation for preparation of a non-volatile acid from a volatile acid.

State the term defined by the following sentence:

The insoluble solid formed when two solutions are mixed together.