Periodic Table, Periodic Properties and Variations of Properties — Chemistry STD 10 — Question

The process of removal of gangue from ore.

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol
From the compounds given above, name
The compound with -COOH as apart of its structure.

Give balanced reactions for the following conversion:
Ammonia solution to an amphoteric hydroxide.

Give the equation for the preparation of the following salt from the starting material given.
Copper sulphate from copper (II) oxide

If a solution changes the colour of litmus from red to blue, what can you say about its pH?

Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have physical and chemical properties resembling chlorine.

What type of compound is formed by the reaction between acetic acid and an alcohol?

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

A saturated hydrocarbon from iodomethene.

A compound with six water of crystallisation.