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F2 SN 6

Total questions: 60

Worksheet time: 47mins

Name
Class
Date
1.

ACID will change blue litmus paper to

a)

red

b)

blue

c)

yellow

d)

green

2.

ALKALINE will change red litmus paper to

a)

red

b)

blue

c)

yellow

d)

green

3.

The taste of ALKALINE is

a)

sour

b)

bitter

c)

no taste

d)

sweet

4.

The taste of ACID is

a)

sour

b)

bitter

c)

no taste

d)

sweet

5.

Pineapple is

a)

Acid

b)

Alkaline

c)

Neutral

6.

Lemon is

a)

Acid

b)

Alkaline

c)

Neutral

7.

Salt is

a)

Acid

b)

Alkaline

c)

Neutral

8.

Sugar is

a)

Acid

b)

Alkaline

c)

Neutral

9.

Orange is

a)

Acid

b)

Alkaline

c)

Neutral

10.

Shampoo is

a)

Acid

b)

Alkaline

c)

Neutral

11.
Which of the following is NOT a property of an acid?
a)
Tastes sour
b)
Corrosive
c)
Changes the colour of blue litmus paper to red
d)
Has a pH value higher than 7
12.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
13.
Which of the following is NOT a property of an alkali?
a)
Tastes bitter
b)
Corrosive
c)
Changes the colour of blue litmus paper to red
d)
Has a pH value higher than 7
14.
What type of acid can be found in a car battery?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
15.

What type of acid can be found in carbonated drinks?

a)

Carbonic acid

b)

Tartaric acid

c)

Citric acid

16.

Is it acid or alkali when the pH is 4

a)

Acid

b)

Alkali

c)

Neutral

17.

Lemon contains acid or alkali or neutral

a)

Acid

b)

Alkali

c)

Neutral

18.

What is an example of neutral substance

a)

Distilled water

b)

Vinegar

c)

Milk

19.

What is the meaning of the above hazard warning symbol?

a)

Corrosive

b)

Explosive

c)

Radioactive

20.

What colour does red litmus paper turn when added to an alkali?

a)

Blue

b)

Red

c)

Colourless

21.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
22.
Neutralization reactions
a)
formed from joining positive and negative ions 
b)
increases OH ions
c)
froms a salt and water
d)
increases H2O ions
23.

Acids are __________, which means they "eat away" at other materials.

a)

transitional metal

b)

alkaline

c)

flammable

d)

corrosive

24.

Acidic solutions exhibit a higher ratio of H3O+ ions, known as...

a)

neutrons

b)

hydroxide

c)

electrons

d)

hydronium

25.

When you place blue litmus paper into an unknown clear solution, the blue litmus paper turns red.

Which of the following represents the most logical conclusion?

a)

The substance has a pH value of "2".

b)

The substance is a base.

c)

The substance has a pH value of "7".

d)

The substance is acidic.

26.

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH-) ions?

a)

below 7

b)

7

c)

above 7

d)

0-14

27.

Do acids and bases conduct electricity?

a)

Only acids conduct electricity

b)

Only bases conduct electricity

c)

Bases and acids conduct electricity

d)

Neither conduct electricity

28.

Which one of the following can be used as an acid-base indicator by a visually impaired student?

a)

Litmus

b)

Turmeric

c)

Methyl Orange

d)

Vanilla essence

29.

Which of the following salts does not contain water of crystallisation?

a)

Blue vitreol

b)

Baking soda

c)

Washing soda

d)

Gypsum

30.

Which of the following salts will give an aqueous solution having pH of almost 7?

a)

Ammonium nitrate

b)

Ammonium chloride

c)

Calcium chloride

d)

Sodium chloride

31.

Complete the word equation for neuralisation reaction.


Acid + Alkali --> _______ + _________

a)

sugar.....water

b)

salt......water

c)

salt......vinegar

d)

vinegar.....salt

32.

Hydrochloric acid + Potassium hydroxide --> _______ + Water

a)

Calcium Sulphate

b)

Sodium Chloride

c)

Potassium Chloride

d)

Sodium Hydroxide

33.

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

a)

acid.......alkali

b)

acid....acid

c)

alkali....acid

d)

alkali....alkali

34.

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

a)

acid....... alkaline

b)

alkali......acidic

c)

acid...... neutral

d)

alkali.....neutral

35.

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

a)

alkaline.....acidic

b)

acidic.....alkaline

c)

acidic....acidic

d)

alkaline....alkaline

36.

Which of the following is a neutralisation reaction?

a)

Potassium hydroxide + kalsium 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

37.

Solution Q is the product of neutralisation. Solution Q is then evaporated in an evaporating dish. What substance Q remains in the evaporating dish?

a)

White solid

b)

White powder

c)

Thick yellow liquid

d)

Grey sparkling specks

38.

Name the method used to carry out neutralisation reaction

a)

Titration

b)

Condensation

c)

Transpiration

d)

Distillation

39.

What is the colour change of phenolphthalein during titration?

a)

colourless (in alkali) to pink (in neutral)

b)

pink (in alkali) to colourless (in neutral)

c)

blue (in alkali) to green(in neutral)

d)

green (in alkali) to yellow (in neutral)

40.

Choose the correct characteristics of Acid.

a)

Ph > 7

b)

React with Metals

c)

Turns red litmus paper to blue

d)

Bitter taste

41.

Acid + Alkali —> ______ + Water

a)

Sugar

b)

Salt

c)

Hydrogen

d)

Oxygen

e)

Carbon Dioxide

42.

What are produce when Acid reacts with active metals?

a)

Water

b)

Salt

c)

Hydrogen Gas

d)

Oxygen Gas

e)

Helium Gas

43.

Below are the application of neutralisation of Toothpaste

a)

Reduce acidity in the soil

b)

neutralise acid in stomach

c)

neutralise alkaline in mouth

d)

Neutralise acid in mouth

44.

below are the colour of Universal indicator when in ACID and Alkaline.

a)

ACID=Red ALKALINE=Purple

b)

ACID=Blue ALKALINE=Red

c)

ACID=Yellow ALKALINE=Blue

d)

ACID=Red ALKALINE=Blue

45.

What acid or alkali are used to make car batteries?

a)

Citric acid

b)

Hydrochloric acid

c)

Sulphuric acid

d)

Formic acid

46.

What acid or alkali are used to make soap?

a)

Hydrochloric Acid

b)

Sodium Hydroxide

c)

Ammonium Solution

d)

Sulphuric acid

47.

What is the use of Formic acid?

a)

Used in coagulation of latex

b)

Used to prevent coagulation of latex

c)

Used as car batteries

d)

Used to make soap

48.

in which Acid base indicator is Acid is colourless base is pink

a)

Methyl orange

b)

Litmus paper

c)

Phenolphthalein

d)

Universal indicator

49.

Differentiate between Base and alkaline

a)

Alkaline is corrosive and base is bitter

b)

Alkaline is blue in colour and base is red in colour

c)

Alkaline is soluble and base is insoluble

d)

alkaline is insoluble and base is soluble

50.

An acid is a solution that contains __________ ions dissolved in water.

a)

hydrogen

b)

hydroxide

51.

An alkaline material will have a pH of

a)

<7

b)

>7

c)

=7

52.

An acidic material will have a pH of

a)

<7

b)

>7

c)

=7

53.

A neutral material will have a pH of

a)

<7

b)

>7

c)

=7

54.

If a material has more OH- ions, then it is a(n)

a)

Acid

b)

Alkaline

c)

Neutral

55.

If a material has an equal amount of H+ and OH- ions, then it is a(n)

a)

Acid

b)

Alkaline

c)

Neutral

56.

Complete the word equation for neuralisation reaction.


Acid + Alkali --> _______ + _________

a)

sugar.....water

b)

salt......water

c)

salt......vinegar

d)

vinegar.....salt

57.

Hydrochloric acid + Potassium hydroxide --> _______ + Water

a)

Calcium Sulphate

b)

Sodium Chloride

c)

Potassium Chloride

d)

Sodium Hydroxide

58.

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

a)

Dilute Nitric acid and Sodium nitrate

b)

Dilute Sulphuric acid and sodium hydroxide solution

c)

Dilute hydrochloric acid and Sodium hydroxide solution

59.

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)

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

60.

Name the method used to carry out neutralisation reaction

a)

Titration

b)

Condensation

c)

Transpiration

d)

Distillation

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