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Acids, Bases, Salts Quiz

Total questions: 15

Worksheet time: 7mins

Name
Class
Date
1.

What are the properties of acids?

a)

Acids have a sweet taste

b)

Acids have a sour taste, turn blue litmus paper red, react with metals to produce hydrogen gas, and have a pH less than 7.

c)

Acids do not react with metals

d)

Acids turn red litmus paper blue

2.

What are the properties of bases?

a)

Bases accept protons, donate pairs of electrons, have a bitter taste, feel slippery, turn red litmus paper blue, and have a pH greater than 7.

b)

Bases donate protons

c)

Bases have a sweet taste

d)

Bases turn blue litmus paper red

3.

Provide examples of common bases.

a)

Sulfuric acid (H2SO4)

b)

Carbon dioxide (CO2)

c)

Sodium hydroxide (NaOH), ammonia (NH3), potassium hydroxide (KOH)

d)

Hydrochloric acid (HCl)

4.

Explain what happens in a neutralization reaction.

a)

A base reacts with an acid to form oxygen and a salt.

b)

An acid reacts with a base to form carbon dioxide and water.

c)

A neutralization reaction involves the combination of two acids.

d)

An acid reacts with a base to form water and a salt.

5.

How is the pH scale used to measure acidity and basicity?

a)

The pH scale uses colors to determine the acidity of a solution.

b)

The pH scale measures temperature instead of acidity and basicity.

c)

The pH scale is used to measure acidity and basicity by indicating whether a solution is acidic (pH < 7), neutral (pH = 7), or basic (pH > 7).

d)

The pH scale categorizes solutions as sweet, sour, or salty.

6.

What is the pH range for acids on the pH scale?

a)

2 to 6.99

b)

0 to 8.99

c)

1 to 7.99

d)

0 to 6.99

7.

What is the pH range for bases on the pH scale?

a)

Less than 7

b)

Greater than 7

c)

Equal to 7

d)

Between 0 and 7

8.

What is the pH of a neutral substance?

a)

5

b)

8

c)

7

d)

10

9.

Choose the correct answer for chemical equation on acid-base reaction

a)

Acid + Base gives Salt + Water

b)

Acid + Base gives neutral solution

c)

HCL + (NaOH) gives (NaCl) + H2O

d)

None of them

10.

Which one of the following is correct property of turmeric indicator

a)

It turns blue in acidic and red in basic

b)

It turns red in acidic and blue in basic

c)

It remains colourless in acidic and red in basic

d)

It changes to green in all cases (acidic, basic or neutral)

11.

Select od one out

a)

Phenolphthalein

b)

Hibiscus

c)

Litmus

d)

Turmeric

12.

Name the acid present in your stomach

a)
b)

Formic Acid

c)

Hydrochloric Acid

d)
13.

An antacid is:-

a)

weak acidic substance

b)

Acidic substance

c)

Basic substance

d)

Neutral substance

14.

The colour of red litmus in a solution of vinegar is:-

a)

yellow

b)

colorless

c)

green

d)

red

15.

Which of the following compounds is likely to have a bitter taste?

a)

Formic acid

b)

Calcium hydroxide

c)

Oxalic acid

d)

carbonic acid