Chemical Bonding — Chemistry STD 10 — Question

Name an alloy of:
zinc used in naval ships

What would happen if
Hydrogen chloride prepared in laboratory, is passed through water, using a delivery tube.

Give reason for the following:
In the electrolysis of acidified water, dilute sulphuric acid is preferred to dilute nitric acid for acidification.

A bond formed by the sharing of electrons.

Give a balanced equation when dilute hydrochloric acid is added to : Potassium bisulphite

Draw the structural formula of a compound with two carbon atoms in the following case.
An alcohol containing two carbon atoms

Give the name of a chemical, which on being added to sodium chloride, will produce hydrogen chloride gas.

State the colour of the residue formed when nitrates of :
1. Calcium
2. Zinc
3. Lead
4. Copper are strongly heat

Write the name and formula of two ores of the following: Iron