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

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.

Dry hydrogen chloride gas can be collected by ________ displacement of air. (downward / upward)

For the preparation of hydrochloric acid in the laboratory:

What arrangement is done to dissolve hydrogen chloride gas in water?

Ethane burns in oxygen to form CO₂ and H₂O according to the equation:

`2C_2H_6+7O_2 -> 4CO_2 + 6H_2O`

If 1250 cc of oxygen is burnt with 300 cc of ethane.

Calculate:

1) the volume of `CO_2` formed

2) the volume of unused `O_2`

Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:

1) Weak acid?

2) Strong alkali?

Give a chemical test to distinguish between the given pairs of chemicals:

Sodium chloride solution and Sodium nitrate solution

What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?

What do you understand by the term, acid?

Water is never added to acid in order to dilute it why?