Select the correct answer from the choices A, B, C and D which are given.

Write only the letter corresponding to the correct answer.

A compound  which liberated reddish brown gas around the anode during electrolysis in its molten state is:

• Sodium chloride

• Copper (II)oxide

• Copper (II)sulphate

• Copper (II)sulphate

Select the correct answer from the choices A, B, C and D which are given.

Write only the letter corresponding to the correct answer.

A compound which liberated reddish brown gas around the anode during electrolysis in its molten state is:

• Sodium chloride

• Copper (II)oxide

• Copper (II)sulphate

• Copper (II)sulphate

Select the correct answer from the choices A, B,C and D which are given.

Write only the letter corresponding to the correct answer.

Which one of the following is not true of metals:

• Metals are good conductors of electricity.

• Metals are malleable and ductile.

• Metals from non-polar covalent compounds.

• Metals from non-polar covalent compounds.

Select the correct answer from the choices A,B,C and D which are given.

Write only the letter corresponding to the correct answer.

Aqua regia is a mixture of:

• Dilute hydrochloric acid and concentrated nitric acid.

• Concentrated hydrochloric acid and dilute nitric acid.

• Concentrated hydrochloric acid [1 part ]and concentrated nitric acid [3].

• Concentrated hydrochloric acid [1 part ]and concentrated nitric acid [3].

Draw the structural formula for each of the following.

Ethanoic acid

Draw the structural formula for each of the following.

But-2-yne 

An element has an atomic number 16, state

i) the period to which it belongs.

ii)The number of valences electrons.

iii) whether it is a metal or non-metal: 

Define the following terms:

Ionization potential

Define the following term:
Electron affinity

Select from the list given(A to E) one substance in each case which matches the description give(Note :each substance is used only once in the answer) (A) Nitroso Iron (II) sulphate (B) Iron(III) chloride (C) chromium sulphate (D) lead (II) chloride (E )sodium chloride.

i) A compound which is deliquescent
ii) A compound which is insoluble in cold water, but soluble in hot water
iv) a compound whose aqueous solution is neutral in nature.