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

Name gas with a rotten egg smell.

Name the anion present in the following compound:

When a barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.

A given white crystalline salt was tested as follows:

The addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawn for the observation?

A given white crystalline salt was tested as follows:

A flame test on the salt gave a persistent golden-yellow colourisation. What conclusions can be drawn for the observation?

Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. What is the metal ion present in solution A?

When an ammonium hydroxide solution is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide giving an inky blue solution. What is the cation present in solution B?

When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.

The questions (i) to (v) refer to the following salt solutions listed A to F.

           A.Copper Nitrate

           B.Iron (II) Sulphate

           C.Iron (III) chloride

           D.Lead Nitrate

           E.Magnesium sulphate

          F.Zinc chloride

(I)Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by a barium chloride solution?

(II)Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?

(III)Which solution will give white precipitate, when either dilute hydrochloric acid or dilute sulphuric acid is added to it?

(IV)Which solution becomes a deep/inky blue colour when the excess of ammonium hydroxide is added to it?

(V)Which solution gives a white precipitate with an excess of ammonium hydroxide solution?

The hydroxide soluble in excess of ammonium hydroxide is ______.

Write a balanced equation of a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Non-polar covalent compounds are ______ conductors of heat and electricity.

State the terms/process for the following:

The name of the process by which Ammonia is manufactured on a large scale.

An amphoteric oxide.

The metal that will not produce hydrogen gas when reacted with dilute acids.

Write a balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

The following sketch represents the electroplating of an Iron cup with Nickel metal.

Study the diagram and answer the following questions:

1. During electroplating, the iron cup is placed at the cathode. Why?
2. Name the ion that must be present in the electrolyte.
3. State one condition that is necessary to ensure that the deposit is smooth, firm and even.
4. Write the reaction taking place at the cathode.
5. What change would you observe at the anode?

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.