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

What do you observe when ammonium salt is heated with caustic soda solution?

Explain why anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.

Write an equation for the reaction of hydrochloric acid on the silver nitrate solution.

Write an equation for the reaction of hydrochloric acid on magnesium foil.

Write an equation for the reaction of hydrochloric acid on caustic soda solution.

Write an equation for the reaction of hydrochloric acid on zinc carbonate.

Write an equation for the reaction of aqueous hydrochloric acid on lead nitrate solution.

Write an equation for the reaction of hydrochloric acid on copper oxide.

Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.

Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.

Give reason for the following:
An aqueous solution of chlorine in acidic in nature
Hint : Cl₂ + H₂O ⟶ HCl +HClO

How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?

How will the action of dilute hydrochloric acid enable you to distinguish between sodium thiosulphate and sodium sulphite?

Give three distinct test [apart from using an indicator] you would carry out with solution of HCl to illustrate the typical properties of an acid.

MnO₂, PbO₂ and red lead react with conc. HCl acid to liberate Cl₂.

What is the common property being shown by these metal oxides?

Convert two soluble metallic nitrates to insoluble metallic chlorides using dil. HCl.

State the composition of aqua regia. State which component is the oxidizing agent in aqua regia.

State which component is the oxidizing agent in aqua regia.

What is passive iron?

Name the products formed when carbon and conc. nitric acid is heated.