Quiz about SCIENCE FORM 2 - ACID & ALKALI

Question 1

Which of the following is NOT a property of an acid?

Accepted Answer

Has a pH value higher than 7

Answer

Tastes sour

Answer

Corrosive

Answer

Changes the colour of blue litmus paper to red

Question 2

What gas is released when an acid reacts with an reactive metal?

Accepted Answer

Hydrogen

Answer

Oxygen

Answer

Helium

Answer

Bromine

Question 3

Which of the following is NOT a property of an alkali?

Accepted Answer

Changes the colour of blue litmus paper to red

Answer

Tastes bitter

Answer

Corrosive

Answer

Has a pH value higher than 7

Question 4

Which of the following is a strong alkali?

Accepted Answer

Sodium hydroxide

Answer

Potassium nitrate

Answer

Sodium nitrate

Answer

Potassium sulphate

Question 5

Which of the following is NOT a strong acid?

Accepted Answer

Ethanoic acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Sulphuric acid

Question 6

What gas is released when an ammonium salt is heated together with an alkali?

Accepted Answer

Ammonia

Answer

Sulphur

Answer

Carbon dioxide

Answer

Oxygen

Question 7

What is the pH value of vinegar?

Accepted Answer

4

Answer

1

Answer

7

Answer

11

Question 8

What is the pH value of toothpaste?

Accepted Answer

8

Answer

1

Answer

7

Answer

14

Question 9

What is the pH value of pure water?

Accepted Answer

7

Answer

14

Answer

4

Answer

8

Question 10

What type of acid can be found in a car battery?

Accepted Answer

Sulphuric acid

Answer

Ethanoic acid

Answer

Nitric acid

Answer

Hydrochloric acid

Question 11

What type of acid can be found in carbonated drinks?

Accepted Answer

Carbonic acid

Answer

Tartaric acid

Answer

Citric acid

Answer

Sulphuric acid

Question 12

What method is used to study the neutralisation reaction between an acid and an alkali?

Accepted Answer

Titration

Answer

Evaporation

Answer

Sublimation

Answer

Electrolisis

Question 13

What is the process that takes place when an acid reacts with an alkali?

Accepted Answer

Neutralisation

Answer

Titration

Answer

Evaporation

Answer

Sublimation

Question 14

In a neutralisation reaction, what is the function of the indicator?

Accepted Answer

To indicate that the mixture is neutral

Answer

To indicate that hot water should be added

Answer

To indicate that the flask should be shaken

Answer

To indicate that a precipitate is formed

Question 15

What is the product of a neutralisation reaction?

Accepted Answer

Salt and water

Answer

Acid and alkali

Answer

Hydrogen and oxygen

Answer

Bromine and chlorine

Question 16

In a neutralisation reaction, dilute hydrochloric acid is slowly added to a sodium hydroxide solution. What is the colour change at the end point if the indicator used is phenolphthalein?

Accepted Answer

From pink to colourless

Answer

From colourless to pink

Answer

From blue to green

Answer

From green to blue

Question 17

In a neutralisation reaction, dilute nitric acid is slowly added to a potassium hydroxide solution. What is the colour change at the end point if the indicator used is the universal indicator?

Accepted Answer

From blue to green

Answer

From colourless to pink

Answer

From green to blue

Answer

From pink to colourless

Question 18

What is the salt formed when hydrochloric acid is added to sodium hydroxide?

Accepted Answer

Sodium chloride

Answer

Potassium nitrate

Answer

Sodium nitrate

Answer

Potassium chloride

Question 19

What is the salt formed when nitric acid is added to potassium hydroxide?

Accepted Answer

Potassium nitrate

Answer

Sodium chloride

Answer

Sodium nitrate

Answer

Potassium chloride

Question 20

Which chemical can be used to neutralise a wasp sting?

Accepted Answer

Vinegar

Answer

Slaked lime

Answer

Alum

Answer

Shampoo

Question 21

Complete the word equation for neuralisation reaction.

Acid + Alkali --> _______ + _________

Accepted Answer

salt......water

Answer

sugar.....water

Answer

salt......vinegar

Answer

vinegar.....salt

Question 22

Hydrochloric acid + Potassium hydroxide --> _______ + Water

Accepted Answer

Potassium Chloride

Answer

Calcium Sulphate

Answer

Sodium Chloride

Answer

Sodium Hydroxide

Question 23

Hasan wants to prepare sodium sulphate in the lab, which chemicals can be used?

Accepted Answer

Dilute Sulphuric acid and sodium hydroxide solution

Accepted Answer

Dilute sulphuric acid and sodium carbonate

Answer

Dilute Nitric acid and Sodium nitrate

Answer

Acid hydrochloric and Sodium hydroxide

Question 24

Toothpaste contains ___________ which neutralises ________ in the mouth due to the action of bacteria to prevent tooth decay.

Accepted Answer

alkali....acid

Answer

acid.......alkali

Answer

acid....acid

Answer

alkali....alkali

Question 25

Hair conditioner contains ______ which neutralises the _____ shampoo so that the hair become smooth, shiny and health.

Accepted Answer

acid....... alkaline

Answer

alkali......acidic

Answer

acid...... neutral

Answer

alkali.....neutral

Question 26

Which of the following is a neutralisation reaction?

Accepted Answer

Hydrochloric acid + Sodium hydroxide --> Sodium chloride + water

Accepted Answer

Hydrochloric acid + Ammonia solution --> Ammonium chloride + water

Answer

Potassium hydroxide + kalsium nitrate --> Calcium hydroxide + Potassium nitrate

Answer

Sodium hydroxide + calcium chloride --> sodium chloride + calcium hydroxide

Question 27

Fabric softener has __________ properties which reduces the pH value of fabric which become ________ due to the use of detergent powder.

Accepted Answer

acidic.....alkaline

Answer

alkaline.....acidic

Answer

acidic....acidic

Answer

alkaline....alkaline

Question 28

What is the colour change of phenolphthalein during titration?

Accepted Answer

pink (in alkali) to colourless (in neutral)

Answer

colourless (in alkali) to pink (in neutral)

Answer

blue (in alkali) to green(in neutral)

Answer

green (in alkali) to yellow (in neutral)

Question 29

Name the method used to carry out neutralisation reaction

Accepted Answer

<p>Titration</p>

Answer

Condensation

Answer

Transpiration

Answer

Distillation

SCIENCE FORM 2 - ACID & ALKALI

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