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

Name the products formed when hot and concentrated sulphuric acid reacts with Copper.

Why is concentrated sulphuric acid kept in air tight bottles?

Why is H₂SO₄ is not used as a drying agent for H₂S?

 Choose the correct answer from the options given below :
An electrolyte which completely dissociates into ions are : 

Name the ions furnished by bases in solution.

Name the ions furnished by : a weak alkali

Name the ions furnished by : an acid

Give one example : Basic oxide which is soluble in water.

Give one example : A hydroxide which is highly soluble in water.

Give one example : A basic oxide which is insoluble in water.

Give one example : A hydroxide which is insoluble in water.

Give one example : A weak mineral acid.

Give one example : A base which is not an alkali.

Give one example : An oxide which is a base.

Give one example : A hydrogen containing compound which is not an acid.

Write the balanced equation for the preparation of the following compound (as the major product) starting from iron and other substance:

Iron (III) chloride

The preparation of lead sulphate from lead carbonate is a two step process (lead sulphate cannot be prepared by adding dilute sulphuric acid to lead carbonate.)

Write the equation for the reaction that will take place when this first step is carried out.

The preparation of lead sulphate from lead carbonate is a two step process (lead sulphate cannot be prepared by adding dilute sulphuric acid to lead carbonate)

Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?

Fill in the blank.
An acid is a compound which when dissolved in water forms hydronium ions as the only ______ ions.

Fill in the blanks.
A base is a compound which if soluble in water contains ______ ions. A base reacts with an acid to form ______ and water only. This type of reaction is known as ______.