Study Of Acids, Bases and Salts — Chemistry STD 10 — Question

When ________ is heated with conc. sulphuric acid it forms nitric acid. [potassium nitrate/potassium nitride]

Electrolysis of aqueous sodium chloride solution will form ________ (hydrogen gas/sodium metal) at the cathode.

Ammonium hydroxide is a __________ base.

In laboratory hydrogen chloride gas is prepared by heating ________ with conc. sulphuric acid. [calcium chloride/sodium chloride]

Fill in the blank:
In Hoope's process, pure aluminium is collected at the ....... of the electrolytic cell.

Lead nitrate on strong heating decomposes to form lead oxide which is ________ [reddish brown /yellow] when hot and ________ [white/yellow] when cold.

The electrode where the current enters the electrolyte is called the _______

Fill in the blank :
We can expect that pure water _________ normally conducts electricity.( Will,Will not)

When dilute sulphuric acid is treated with CaOCl₂, the colour of the gas evolved is ________ . [greenish/yellow brown].

when ammonium chloride is heated, it undergoes ________ . (thermal decomposition, dissociation)