9.1 Ammonia — Chemistry STD 10 — Question

Give a reason for the following:
Potassium is not extracted by electrolysis of its aqueous salt solution.

An alloy of lead and tin that is used in electrical circuits.

The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
Oxalic acid reacts with sulphuric acid to produce carbon monoxide and carbon dioxide.

Give balanced equations when:
ethene combines with hydrogen chloride

A gas cylinder filled with hydrogen holds 5g of the gas. The same cylinder holds 85 g of gas X under the same temperature and pressure. Calculate :
Vapour density of gas X.

Name a compound prepared by ammonia and is used as Explosive.

what are alcohols? State their sources.

A reddish-brown gas obtained when lead nitrate crystals are strongly heated.

A formula of a chemical substance which tells the actual number of atoms in one molecule of a substance.

Mention the colour changes observed when the following indicator is added to acid: Methyl orange solution.