Chemistry- sulphuric acid & Analytical

The drying agent used to dry HCl gas is:

• conc H₂SO₄

• ZnO

• Al₂O₃

• CaO

The name of the process used to manufacture sulphuric acid is (a)  

S + 6HNO₃ -----> H₂SO₄ + 6 (a)   + 2H₂O

conc. H₂SO₄ is not used to dry ammonia gas as ammonia is (a)   in nature.

C + H₂SO₄---> (a)   + 2H₂O + 2 SO₂

which property of sulphuric acid is shown in its reaction with ethanol?

• oxidising

• dehydrating

• acid

• non volatile

which property of sulphuric acid is shown in its reaction with carbon?

• dehydrating

• oxidising

• non volatile

• reduction

What is the colour of the precipitate when sodium hydroxide solution is added to ferrous sulphate solution?

• dirty green

• reddish brown

• white

• blue

What is the colour of the precipitate when sodium hydroxide is added to ferric sulphate solution?

• dirty green

• reddish brown

• blue

• white

On adding excess of ammonium hydroxide solution to copper sulphate, the precipitate

• remains insoluble

• dissolves