Science : Ch 02 – Acids Bases and Salts

This test is designed based on NCERT Syllabus for Class 10 Topics : Acids Bases and Salts

Each time random 15 questions will be displaced
So retake the quiz till you have mastered all the questions

1 / 15

Calcium phosphate is present in tooth enamel. Its nature is:

Basic

Acidic

Neutral

Amphoteric

2 / 15

Which of the following is not a mineral acid?

Hydrochloric acid

Citric acid

Sulphuric acid

Nitric acid

3 / 15

The chemical formula for plaster of Paris is :

CaSO₄.2H₂O

CaSO₄.H₂O

CaSO₄. 1/2H₂O

2CaSO₄.H₂O

4 / 15

Which of the following declaration is true for acids?

Bitter and change red litmus to blue

Sour and change red litmus to blue.

Sour and change blue litmus to red

Bitter and change blue litmus to red.

5 / 15

Which of the following substances will not give carbon dioxide on treatment with dilute acid?

Marble

Limestone

Baking soda

Lime

6 / 15

Identify the true representation of reaction occurring during chloralkali process.

2NaCl(l) + 2H₂O(l) → 2NaOH(l) + Cl₂(g) + H₂(g)

2NaCl(l) + 2H₂O(aq) → 2NaOH(aq) + Cl₂(g) + H₂(aq)

2NaCl(aq) + 2H₂O(l) → 2NaOH(aq) + Cl₂(aq) + H₂(aq)

2NaCl(aq) + 2H₂O(l) → 2NaOH(aq) + Cl₂(g) + H₂(g)

7 / 15

Common salt other than being used in kitchen can also be used as the raw material for making:

Washing soda

Bleaching powder

Baking soda

Slaked lime

1 and 3

1 and 2

1, 2 and 3

1, 3 and 4

8 / 15

Which of the subsequent phenomena occur, when a slight amount of acid is added to water?

It turns lime water milky

It extinguishes a burning splinter.

It dissolves in a solution of sodium hydroxide.

It has a pungent odour

1 and 3

1 and 2

2 and 3

2 and 4

9 / 15

What will take place when the solution of an acid is blend with the solution of a base in a test tube?

The temperature of the solution increases

The temperature of the solution decreases

The temperature of the solution remains the same

Salt formation takes place

1 and 4

1

1 and 3

2 and 4

10 / 15

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following declaration are true about the gas evolved?

It turns lime water milky

It extinguishes a burning splinter.

It dissolves in a solution of sodium hydroxide.

It has a pungent odour

1,2 and 3

1 and 2

1 and 4

2, 3 and 4

11 / 15

Name the acid along present in ant sting

methanoic acid

sulphuric acid

Hydrochloric acid

none

12 / 15

What types of ions are formed when a base is dissolved in water ?

H+ ions are formed

OH- ions

allof these

13 / 15

The pH of pure water is

4

5

6

7

14 / 15

The chemical used in manufacture of soaps

Na₂Co₃

NaOH

NACo₄

Na₂OH

15 / 15

Common name calcium sulphate hemihydrate

lime stone

Plaster of paris

white stone

none

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Science : Ch 02 – Acids Bases and Salts

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