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

Which of the following gives the exact increasing order of acid strength?

Water < acetic acid < hydrochloric acid

Water < hydrochloric acid < acetic acid

Acetic acid < water < hydrochloric acid

Hydrochloric acid < water < acetic acid

2 / 15

A visually challenged student, has to carryout a lab test to detect the presence of acid in a given solution. The acid-base indicator favoured by him will be:

Blue litmus

Clove oil

Red cabbage extract

Hibiscus extract

3 / 15

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

Wash the hand with a saline solution

Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate

After washing with plenty of water, apply a solution of sodium hydroxide on the hand

Neutralise the acid with a strong alkali

4 / 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

5 / 15

Which of the following statements is accurate about an aqueous solution of an acid and a base?

Higher the pH, stronger the acid

Higher the pH, weaker the acid

Higher the pH, stronger the base

Lower the pH, weaker the base

1 and 3

2 and 3

2 and 4

1 and 4

6 / 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

7 / 15

Name the acid along present in ant sting

methanoic acid

sulphuric acid

Hydrochloric acid

none

8 / 15

The chemical formula for methonic acid

H2COH

HOOCH

HCOOH

None

9 / 15

An old person complained of acute pain in stomach. Doctor gave small antacid tablet and he got immediate relief. What actually happened?

anatacids added excess acid in his stomach

anatacids neutralized the excess acid in his stomach

anatacids removed the excess acid in his stomach

none

10 / 15

The pH of pure water is

4

5

6

7

11 / 15

The source of oxyalic acid is

cucumber

coriander

Potato

Tomato

12 / 15

The chemical used in manufacture of soaps

Na₂Co₃

NaOH

NACo₄

Na₂OH

13 / 15

Hydrogen is used in manufacture

of ammonia for fertilizers and as Rocket fuel.

soaps

dyes

none

14 / 15

Washing soda is prepared from

sodium chloride

sodium carbonate

sodium hydroxide

sodium nitrate

15 / 15

On strong heating, blue coloured copper sulphate crystals turns

purple

red

white

blue

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Science : Ch 02 – Acids Bases and Salts

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