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

State one relevant observation for the following

When hydrogen sulfide gas is passed through lead acetate solution.

The acid on mixing with silver nitrate solution produces a white precipitate which is soluble in excess ammonium hydroxide

Give balanced chemical equations for Sodium ethanoate to methane.

Name the following:

The distinctive reaction that takes place when ethanol is treated with acetic acid.

Consider the following reaction and based on the reaction answer the questions that follow:

Calculate:

1) the quantity in moles of (NH₄)₂Cr₂O₇ if 63gm of(NH₄)₂Cr₂O₇ is heated.

2) the quantity in moles of nitrogen formed.

3) the volume in liters or dm3 of N2 evolved at S.T.P.

4) the mass in grams of Cr2O3 formed at the same time

(Atomic masses: H=1, Cr= 52, N=14]

 Explain the following:

Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.

Explain the following:

Concentrated nitric add appears yellow when it is left standing in a glass bottle.

Explain the following:

An all-glass apparatus is used in the laboratory preparation of nitric acid.

Fill in the blanks from the choices given within brackets:

The basicity of acetic acid is-------- (3, 1, 4).

Write a balanced equation for the action of heat on a mixture of copper and concentrated nitric acid.

Write a balanced equation for the action of dilute hydrochloric acid on sodium sulphide.

A compound made up of two elements X and Y has an empirical formula X₂Y. If the atomic weight of X is 10 and that of Y is 5 and the compound ha a vapor density 25, find its molecular formula.

State your observation When moist starch iodide paper is introduced into chlorine gas.

Give balanced chemical equations to prepare the following salts

Lead sulphate from lead carbonate

Name the kind of particles present in sodium hydroxide solution.

The salt solution which does not react with ammonium hydroxide is :

The organic compound which undergoes substitution reaction is :

(A) `C_2H_2`

(B) `C_2H_4`

(C) `C_10H_18`

(D) `C_2H_6`

Write a balanced chemical equation for the reaction of sodium hydroxide solution with iron (III) chloride solution

Give a reason for Conductivity of dilute hydrochloric acid is greater than that of acetic acid

Name the gas that is produced in the given cases :

An action of dilute hydrochloride acid on sodium sulphide.