Organic Chemistry — Chemistry STD 10 — Question

A list of some organic compounds is given below :
List: ethene, ethyne, methanol and methane.
From the list above, name a compound :
(i) Which has a vapour density 14 and turns alkaline potassium permanganate solution colourless?
(ii) Which forms methanoic acid on oxidation in the presence of copper at 200°C?
(iii) Which forms chloroform on halogenation in the presence of sunlight?

How is gas collected?

Lead nitrate solution treated with calcium chloride solution and products are heated and cooled.

Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution

How do metals differ from non-metals in :
(i) ion formation
(ii) electronic configuration
(iii) chemical nature of their oxides?

Name three compounds formed by ethene and give one use of each compound.

The following question is pertaining to the laboratory pertaining hydrogen chloride gas.
Write the equation for its preparation mentioning the condition required

What is meant by refining of metals? Name the three common methods used for refining.