IGCSE Chemistry: Specimen Questions with Answers 151 - 153 of 240
Question number: 151
Question
Silver nitrate is made mainly from ________ acid.
Choices
Choice (4) | Response | |
---|---|---|
a. | Hydrochloric acid |
|
b. | Vinegar |
|
c. | Sulphuric acid |
|
d. | Nitric acid |
|
Answer
d.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
Write in Short
Some inks contain ethanoic acid. Complete the 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
Question number: 153
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. |
|
|
d. | Metal |
|
Answer
c.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.