Chemical Bonding — Chemistry STD 10 — Question

Name the hydrocarbon which is known as olefin .

Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Sodium Sulphate from sodium carbonate.

Define isomerism.

Mention the term defined by the following sentence:
The mass of a given volume of gas compared to the mass of an equal volume of hydrogen.

The volumes of gases A, B, C and D are in the ratio, 1:2:2:4 under the same conditions of temperature and pressure.
If this ratio of gas volumes refers to the reactants and products of a reaction, which gas law is being observed?

Write the probable colour of the following salts.
Calcium salts

Mention the colour changes observed when the following indicator is added to acid: Alkaline phenolphthalein solution.

Comment, sulphuric acid is referred to as King of chemicals.

A given white crystalline salt was tested as follows: The addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawn for the observation?

Electrons lost or gained by an atom in compound formation.