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

Why is water not added to concentrated H₂SO₄ in order to dilute it?

Give two balanced reactions of the type to show the following property of sulphuric acid:

Acidic nature

Give two balanced reactions of the type to show the following property of sulphuric acid:

Oxidising agent

Give two balanced reactions of each type to show the following properties of sulphuric acid:
Hygroscopic nature

Give two balanced reactions of the type to show the following property of sulphuric acid:

Non-volatile nature

Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid.

Give a chemical test to distinguish between dilute sulphuric acid and conc. sulphuric acid.

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

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

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

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

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.