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

State your observation for the following case :
Moist blue litmus is introduced into a gas jar of sulphur dioxide.

State your observation for the following case :
Dry red rose petals are placed in the jar of sulphur dioxide.

State your observation for the following case:

Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.

What would you observe in the following case:

Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.

What property of sulphuric acid is shown by the reaction of concentrated sulphuric acid when heated with :
(i) Potassium nitrate
(ii) carbon

In the given equation identify the role played by concentrated sulphuric acid S + 2H₂SO₄→ 3SO₂ + 2H₂O

State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.

State one appropriate observation of the following:

Dehydration of concentrated sulphuric acid with sugar crystals.

Give one equation to show the following property of sulphuric acid:

Dehydrating property

Give one equation to show the following property of sulphuric acid:

Acidic nature

Give one equation to show the following property of sulphuric acid:

As a non-volatile acid

Give a balanced chemical equation for the action of sulphuric acid on the following:

Potassium hydrogen carbonate

Give a balanced chemical equation for the action of sulphuric acid on the following:

Sulphur

Write balanced chemical equation to show :
The oxidizing action of conc.sulphuric acid on carbon

Write balanced chemical equation to show :
The behavior of H₂SO₄ as an acid when it reacts with magnesium.

Write balanced chemical equation to show :
The dehydrating property of conc.sulphuric acid

Which property of sulphuric acid accounts for its use as a dehydrating agent ?

Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write one equation each to illustrate the properties of sulphuric acid mentioned above.

Write the balanced chemical equation for the following conversion:
Lead sulphate from lead nitrate solution and dilute sulphuric acid.

Write the balanced chemical equation for the following conversion:
Copper sulphate from copper and concentrated sulphuric acid.