Some word/words are missing in the following statements. You are required to rewrite
the statements in the correct form using the appropriate word/words:

i. Ethyl alcohol is dehydrated by sulphuric acid at a temperature of about 170°C.

ii. Aqua regia contains one part by volume of nitric acid and three parts by volume of
hydrochloric acid.

iii. Magnesium nitride reacts with water to liberate ammonia.

iv. Cations migrate during electrolysis.

v. Magnesium reacts with nitric acid to liberate hydrogen gas.

Choose the correct answer from the options given below:

i. An element in period 3 whose electron affinity is zero.
A) Neon B) Sulphur
C) Sodium D) Argon

ii. An alkaline earth metal.
A) Potassium B) Calcium
C) Lead D) Copper

iii. The vapour density of carbon dioxide [C = 12, 0 = 16]
A) 32 (B) 16
C) 44 (D) 22

iv. Identify the weak electrolyte from the following:
A) Sodium chloride solution (B) Dilute hydrochloric acid
C) Dilute sulphuric acid (D) Aqueous acetic acid

v. Which of the following metallic oxides cannot be reduced by normal reducing
agents?
A) Magnesium oxide (B) Copper (II) oxide
C) Zinc oxide (D) Iron (III) oxide

Match the following:

Column A	Column B
(1) Acid salt	(A) Ferrous ammonium sulphate
(2) Double salt	(B) Contains only ions
(3)Ammonium hydroxide solution	(C)Sodium hydrogen sulphate
(4)Dilute hydrochloric acid	(D) Contains only molecules
(5) Carbon tetrachloride	(E) Contains ions and molecules

Give the structural formula for the following:

i. Methanoic acid