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Neutralisation

Total questions: 13

Worksheet time: 8mins

Name
Class
Date
1.

Q. The mixing of acids and alkalis in order to form salt and water is what we called (a)  

2.

2. What are the products formed when acid neutralises with alkali?

(a)  

3.

Why does your toothpaste alkaline?

a)

It can neutralise strong alkaline in

your mouth

b)

It can neutralise acid in

your mouth

c)

It can refresh your teeth

d)

Toothpaste is not alkaline.

4.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
5.

What colour change in universal indicator would you see if you added nitric acid to sodium hydroxide?

a)

red -> blue

b)

purple -> green

c)

red -> yellow

d)

pink -> colourless

6.

Complete the word equation below:

Acid + alkali --> ............... + water

a)

water

b)

salt

c)

gold

d)

metal

7.

.............................. + sodium hydroxide --> sodium chloride + water

a)

Nitric acid

b)

Sulphuric acid

c)

Hydrochloric acid

d)

Ethanoic acid

8.

Bee sting contain ............................ and can be neutralize using bicarbonate soda.

a)

alkali

b)

acid

c)

vinegar

d)

soda

9.

Excess acids in stomach can be neutralized using ............

a)

antacid

b)

vinegar

c)

slaked lime

d)

hydrochloric acid

10.
In a neutralisation reaction, what is the function of the indicator?
a)
To indicate that the mixture is neutral
b)
To indicate that hot water should be added
c)
To indicate that the flask should be shaken
d)
To indicate that a precipitate is formed
11.

Which of the following is a neutralisation reaction?

a)

Potassium hydroxide + calcium nitrate --> Calcium hydroxide + Potassium nitrate

b)

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

c)

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

d)

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

12.

Conditioners contain ........................ that neutralize shampoo on hairs.

a)

acid

b)

alkali

c)

vinegar

d)

natrium hydroxide

13.

Which of the following solutions is suitable to be used to indicate neutralisation between acid and alkali?

a)

Iodine solution

b)

Sodium hydroxide solution

c)

Colour paper

d)

Universal indicator