pH MCQs

The relative concentration of hydrogen to hydroxide ions is represented by the _____ scale.

Concentration
Hydroxyl
hydrogen
pH

Correct Answer

pH

In the early _____ , scientists came up with the pH scale

2000s
1900s
1800s
None of these

Correct Answer

1900s

the term pH symbolizes the _____ ion concentration in a solution

hydrogen
sodium
Carbonate
bicarbonate

Correct Answer

hydrogen

The pH scale goes from _____

2 to 9
1 to 14
1 to 9
-2 to +5

Correct Answer

1 to 14

A pH of water is neutral

4
7
9
12

Correct Answer

7

pH of pure water is?

4
9
12
7

Correct Answer

7

A solution that contains more hydrogen ions than hydroxide ions is?

acidic
basic
Neutral
None of these

Correct Answer

acidic

A solution that contains more hydrogen ions than hydroxide ions is acidic, and the pH of the solution is _____

less than 7
More than 7
Equal to 7
None of these

Correct Answer

less than 7

If a molecule releases hydrogen ions in water, it’s a _____

base
Acid
Salt
None of these

Correct Answer

Acid

If a molecule releases _____ ions in water, it’s an acid

hydrogen
sodium
Carbonate
Bicarbonate

Correct Answer

hydrogen

The more hydrogen ions a substance releases in water, the _____ the acid

More; stronger
Lesser; stronger
Lesser; weaker
More; weaker

Correct Answer

More; stronger

The _ hydrogen ions a substance releases in water, _____ the pH

Lesser; higher
More; higher
More; lower
Lesser; lower

Correct Answer

More; lower

A solution that contains more _____ ions than hydrogen ions is basic

Sodium
hydroxyl
Carbonate
bicarbonate

Correct Answer

hydroxyl

A solution that contains more hydroxyl ions than hydrogen ions is?

acidic
basic
Neutral
None of these

Correct Answer

basic

pH of basic solution is?

Lesser than 7
higher than 7
Equal to 7
None of these

Correct Answer

higher than 7

most substances in the human body hover around the pH of _____

2
7
9
11

Correct Answer

7