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

Which one of the following has the largest atomic radius?

Which one has the largest size?

Give reason for the following:

The size of a Cl⁻ ion is greater than the size of a Cl atom.

This question refers to the elements of the Periodic Table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but the letters are not the usual symbols of the elements.

Which of these have least atomic size in period 3?

A molecule of ______ contains a triple bond.

State which of the two - a solution of \[\ce{HCl}\] in water or in toluene is an electrolyte. Explain.

Write a balanced chemical equation for the following:

Reaction of Ammonia with heated copper oxide.

State one relevant observation for given reactions:

Burning of ammonia in air.

Give a balanced chemical equation for Catalytic oxidation of Ammonia

Give a balanced chemical equation for Reaction of Ammonia with Nitric acid

The equation 4NH₃ + 5O₂ → 4NO + 6 H₂O, represents the catalytic oxidation of ammonia. If 100 cm³ of ammonia is used calculate the volume of oxygen required to oxidize the ammonia completely

Write balanced chemical equations for the following:

When the excess of ammonia is treated with chlorine.

Write balanced chemical equations for the following:

An equation to illustrate the reducing nature of ammonia.

Select from the list the gas that matches the description given in case

[ammonia, ethane, hydrogen chloride, hydrogen sulfide, ethyne]

This gas is used as a reducing agent in reducing copper oxide to copper

State one relevant observation for the following

When ammonia gas is burnt in an atmosphere of excess oxygen.

The acid which is prepared by catalytic oxidation of ammonia.

State the conditions required for the given reaction to take place:

Catalytic oxidation of ammonia to nitric oxide.

A gas ‘P’ gives dense white fumes with chlorine. Its aqueous solution gives a blue colour with copper (II) hydroxide.

1. Name the gas P.
2. Give its formula.
3. Give three uses of P.

Ammonia solution in water gives a blue precipitate when it combines with a solution of copper salt. The blue precipitate further dissolves in excess of an ammonia solution to give the azure blue solution. Explain with the equation.

explain catalytic oxidation of ammonia.