11.6 Carboxylic Acid — Chemistry STD 10 — Question

The electronegativities(according to Pauling) of the elements in period 3 of the periodic table are as follows with elements arranged in alphabetical order:

Al	Cl	Mg	Na	P	S	Si
1.5	3	1.2	0.9	2.1	2.5	1.8

Arrange the elements in the order in which they occur in the periodic table from left to right. (The group 1 element first, followed by the group 2 element and so on, up to group 7).

Name the hydrocarbon which forms a red precipitate with ammoniacal solution of copper (I) chloride .

Name the hydrocarbon which is known as paraffin .

Name the hydrocarbon which is a linear molecule .

Two molecules, which are polar.

What is a Homologous series?

What would you observe in the following cases:
Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.

The following questions refer to the Periodic Table: Which of the elements has the greatest electron affinity among the halogens?

Name the gas evolved when dilute hydrochloric acid is added to: Potassium bisulphite