CIE Chemistry (US-0439): Specimen Questions with Answers 151 - 153 of 240

Question number: 151

MCQ▾

Question

Silver nitrate is made mainly from ________ acid.

Choices

Choice (4) Response

a.

Hydrochloric acid

b.

Sulphuric acid

c.

Nitric acid

d.

Vinegar

Answer

c.

Explanation

Silver nitrate is made mainly from nitric acid.

Silver nitrate can be prepared by reacting silver, such as a silver bullion or silver foil, with nitric acid, resulting in silver nitrate, water, and oxides of nitrogen. Reaction byproducts depend upon the concentration of nitric acid used.

This is performed under a fume hood because of toxic nitrogen oxide (s) evolved during the reaction.

Question number: 152

Short Answer Question▾

Write in Short

Some inks contain ethanoic acid. Complete the structure of ethanoic acid.

structure of ethanoic acid

Structure of Ethanoic Acid

structure of ethanoic acid

Explanation

Complete structure is given below.

Image result for ethanoic acid

Image Result for Ethanoic Acid

Image result for ethanoic acid

Question number: 153

MCQ▾

Question

Arrhenius said that all those substances that give ________ ions as the only positively charged ions in a solution are acids.

Choices

Choice (4) Response

a.

b.

c.

Metal

d.

Answer

a.

Explanation

Arrhenius said that all those substances that give ions as the only positively charged ions in a solution are acids. As ion is unstable, so it combines with water to form ion. So all those substances that give ions as the only positively charged ions in a solution are acids.