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Worksheets

REVISION ACID AND ALKALI

Total questions: 150

Worksheet time: 2hrs 39mins

Name
Class
Date
1.
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
2.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
3.
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
4.
Which of the following is a strong alkali?
a)
Sodium hydroxide
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium sulphate
5.
Which of the following is NOT a strong acid?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
6.
What gas is released when an ammonium salt is heated together with an alkali?
a)
Sulphur
b)
Ammonia
c)
Carbon dioxide
d)
Oxygen
7.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
8.
What is the pH value of toothpaste?
a)
1
b)
7
c)
14
d)
8
9.
What is the pH value of pure water?
a)
7
b)
14
c)
4
d)
8
10.
What type of acid can be found in a car battery?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
11.
What type of acid can be found in carbonated drinks?
a)
Carbonic acid
b)
Tartaric acid
c)
Citric acid
d)
Sulphuric acid
12.
What method is used to study the neutralisation reaction between an acid and an alkali?
a)
Evaporation
b)
Titration
c)
Sublimation
d)
Electrolisis
13.
What is the process that takes place when an acid reacts with an alkali?
a)
Titration
b)
Evaporation
c)
Neutralisation
d)
Sublimation
14.
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
15.
What is the product of a neutralisation reaction?
a)
Acid and alkali
b)
Salt and water
c)
Hydrogen and oxygen
d)
Bromine and chlorine
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?
a)
From colourless to pink
b)
From blue to green
c)
From pink to colourless
d)
From green to blue
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?
a)
From colourless to pink
b)
From green to blue
c)
From pink to colourless
d)
From blue to green
18.
What is the salt formed when hydrochloric acid is added to sodium hydroxide?
a)
Potassium nitrate
b)
Sodium nitrate
c)
Sodium chloride
d)
Potassium chloride
19.
What is the salt formed when nitric acid is added to potassium hydroxide?
a)
Sodium chloride
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium chloride
20.
Which chemical can be used to neutralise a wasp sting?
a)
Slaked lime
b)
Alum
c)
Shampoo
d)
Vinegar
21.
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
22.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
23.
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
24.
What type of acid can be found in a car battery?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
25.

What type of acid can be found in carbonated drinks?

a)

Carbonic acid

b)

Tartaric acid

c)

Citric acid

26.

Is it acid or alkali when the pH is 4

a)

Acid

b)

Alkali

c)

Neutral

27.

Lemon contains acid or alkali or neutral

a)

Acid

b)

Alkali

c)

Neutral

28.

What is an example of neutral substance

a)

Distilled water

b)

Vinegar

c)

Milk

29.

What is the meaning of the above hazard warning symbol?

a)

Corrosive

b)

Explosive

c)

Radioactive

30.

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

a)

Blue

b)

Red

c)

Colourless

31.

What kind of acid is present in your stomach?

a)

Sulfuric acid

b)

Hydrochloric acid

c)

Nitric acid

32.

Which of the following about properties of acid is not true?

a)

pH less than 7

b)

Tastes bitter

c)

Corrosive

d)

Turns blue litmus paper to red

33.

Which of the following will change the red litmus paper to blue?

a)

Sodium hydroxide

b)

Hydrochloric acid

c)

Sulphuric acid

d)

Nitric acid

34.

State the taste of this fruit?

a)

Tastles

b)

Bitter

c)

Sour

d)

Sweet

35.

What is the example of alkaline substance

a)

bitter gourd

b)

lemon juice

c)

mineral water

36.

Which of the properties of alkaline substance is NOT TRUE?

a)

taste bitter

b)

corrosive

c)

turn red litmus paper to blue

d)

turn blue litmus paper to red

37.

Which of the following can be used to replace lime juice in cooking?

a)

Papaya

b)

Long bean

c)

Tomato

38.

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

a)

Oxygen

b)

Hydrogen

c)

Carbon dioxide

39.

Blue and red litmus paper are added into a container containing a solid substance. After 5 minutes no changes occur to the blue litmus paper and red litmus paper. Which of the following is the reason for these results?

a)

The substance is alkali

b)

The substance is acidic

c)

The substance is neutral

d)

Acid and alkali shows their properties only in the presence of water.

40.

Which of the following is not an indicator?

a)

colour paper

b)

phenolphthalein

c)

universal indicator

d)

red litmus paper

41.

the liquid is

a)

acid

b)

alkali

c)

neutral

42.

the liquid is

a)

acid

b)

alkali

c)

neutral

43.

No changes for red litmus paper test

No changes for blue litmus paper test

a)

Acid

b)

Alkali

c)

Neutral

44.
a)

Red litmus paper will have no changes

b)

Red litmus paper will turns to blue color

45.

Indicator that can be use to identify the properties of substances

a)

Lime water

b)

Phenolphtalein

c)

Lime juice

46.
a)

No changes of red litmus paper test

b)

Red litmus paper will turn to blue

47.

Acid+Alkali →\rightarrow  Salt+Water

a)

Condensation

b)

Neutralisation

c)

Distillation

48.

Product of neutralisation

a)

salt

b)

water

c)

clean air

d)

heat

49.
a)

Will turn red litmus paper to blue

b)

Will turn blue litmus paper to red

50.
a)

No changes of red litmus paper

b)

No changes of blue litmus paper

51.

To neutralize the excess acid in stomach

a)

Antacid

b)

Vitamin C

c)

Milk of magnesia

d)

Paracetamol

52.

Which technique stated below is incorrect in the use of a microscope?

a)

Place the microscope down gently

b)

clean the lenses with tissue paper

c)

always start viewing a specimen with both eyes open

d)

always view a specimen with both eyes open

53.

The smallest organism known to man is made up of..

a)

one cell

b)

two cells

c)

three cells

d)

many cells

54.
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
55.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
56.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
57.
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
58.
Which of the following is a strong alkali?
a)
Sodium hydroxide
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium sulphate
59.
Which of the following is NOT a strong acid?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
60.
What gas is released when an ammonium salt is heated together with an alkali?
a)
Sulphur
b)
Ammonia
c)
Carbon dioxide
d)
Oxygen
61.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
62.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
63.
What is the pH value of toothpaste?
a)
1
b)
7
c)
14
d)
8
64.
What is the pH value of pure water?
a)
7
b)
14
c)
4
d)
8
65.
What type of acid can be found in carbonated drinks?
a)
Carbonic acid
b)
Tartaric acid
c)
Citric acid
d)
Sulphuric acid
66.
What method is used to study the neutralisation reaction between an acid and an alkali?
a)
Evaporation
b)
Titration
c)
Sublimation
d)
Electrolisis
67.
What is the process that takes place when an acid reacts with an alkali?
a)
Titration
b)
Evaporation
c)
Neutralisation
d)
Sublimation
68.
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
69.
What is the product of a neutralisation reaction?
a)
Acid and alkali
b)
Salt and water
c)
Hydrogen and oxygen
d)
Bromine and chlorine
70.
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?
a)
From colourless to pink
b)
From green to blue
c)
From pink to colourless
d)
From blue to green
71.
What is the salt formed when hydrochloric acid is added to sodium hydroxide?
a)
Potassium nitrate
b)
Sodium nitrate
c)
Sodium chloride
d)
Potassium chloride
72.
What is the salt formed when nitric acid is added to potassium hydroxide?
a)
Sodium chloride
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium chloride
73.

List the differences between acids and bases.

a)

Acid turns red to blue. Base turns blue to red.

b)

Acid turns red to blue. Base turns blue to blue.

c)

Acid turns red to red. Base turns blue to red.

d)

Acid turns blue to red. Base turns red to blue.

74.

List examples of an acids and bases present in your household.

a)

Fork, Cup, Plates, Mop. They all represent acid and base same thing.

b)

Orange, Lime, Lemon are examples of Acid.

Soap, Oven cleaner, Bleach are examples of Base.

c)

Orange, Lime, Lemon are examples of Base.

Soap, Oven cleaner, Bleach are examples of Acid.

d)

There are no examples.

75.

List 2 strong acids.

a)

Hydrochloric Acid # 0, Gastic acid # 1.

b)

Milk # 6, Blood # 8.

c)

Soap # 12, Lemon # 2

d)

There are only weak acids. No strong acids.

76.

List 2 weak acids.

a)

Milk # 6 / Coffee # 5

b)

Apple # 3 / Lemon # 2

c)

Apple # 3 / Coffee # 5

d)

Tomato # 4 / Gastric Acid # 1

77.

List 2 strong bases.

a)

Orange # 3 / Oven Cleaner # 13

b)

Milk of Magnesia # 8 / Caustic Soda # 14

c)

Bleach # 13 / Drain Cleaner #14

d)

Battery Acid # 0 / Drain Cleaner #14

78.

produce hydrogen ions (H+) in solution

a)

Acid

b)

Base

79.

have a sour taste

a)

Acid

b)

Base

80.

Burns the skins

a)

Acid

b)

Base

81.

Corrosive

a)

Acid

b)

Base

82.

Reacts with metals.

a)

Acid

b)

Base

83.

produce hydroxide ions (OH-) ions

a)

Acid

b)

Base

84.

react with acids to form salts

a)

Acid

b)

Base

85.

react with Base to form salts

a)

Acid

b)

Base

86.

Which pH # does neutral water have?

a)

5

b)

6

c)

7

d)

8

87.

Is it acid or alkali when the pH is 4 pH

a)

Acid

b)

Alkali

c)

Neutral

88.

Lemon contains acid or alkali or neutral

a)

Acid

b)

Alkali

c)

Neutral

89.

What is an example of neutral

a)

Vinegar

b)

Water

c)

Milk

d)

Drain cleaner

90.

When you get a bee sting, what will you use to make you feel better ?

a)

Water

b)

Baking soda

c)

Milk

d)

Toothpaste

91.

The other name of alkali is basic

a)

True

b)

False

92.

What is the meaning of the above hazard warning symbol?

a)

Corrosive

b)

Explosive

c)

Toxic

d)

Radioactive

93.

Acid in soft drink:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

94.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

95.

The color of litmus in acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

96.

Alkali could also be known as

a)

Acid

b)

Weak acid

c)

Base

d)

Maze

97.

True or False: Acids with a low pH and bases with a high pH are considered very dangerous.

a)

True

b)

False

98.

What kind of acid is present in your stomach?

a)

Sulfuric acid

b)

Hydrochloric acid

c)

Citric acid

d)

Nitric acid

99.

Which of the following about properties of acid is not true?

a)

pH less than 7

b)

Tastes bitter

c)

Corrosive

d)

Turns blue litmus paper to red

100.

Which of the following will change the red litmus paper to blue?

a)

Sodium hydroxide

b)

Hydrochloric acid

c)

Sulphuric acid

d)

Nitric acid

101.

Which of the following indicator will show different colour in acid, neutral and alkali?

a)

Phenolphtalein

b)

Universal indicator

c)

Methyl orange

d)

Litmus paper

102.

State the taste of this fruit?

a)

Tastles

b)

Bitter

c)

Sour

d)

Sweet

103.

What is the example of alkaline substance

a)

bitter gourd

b)

lemon juice

c)

cooking oil

d)

mineral water

104.

Which of the food has the same taste as the sweets?

a)

Chocolate

b)

Salted egg

c)

Baking powder

d)

Soda bicarbonate

105.

Name the indicator used to determine the chemical properties of toothpaste and pineapple juice?

a)

Red and Blue litmus paper

b)

Filter paper

c)

Colour paper

d)

Petri dish

106.

Which of the properties of alkaline substance is NOT TRUE?

a)

taste bitter

b)

slippery

c)

turn red litmus paper to blue

d)

turn blue litmus paper to red

107.

Which of the following changes the blue litmus paper to red?

a)

Potato

b)

Soup

c)

Brinjal

d)

Ice cream

108.

Which of the following can be used to replace tamarin in cooking?

a)

Papaya

b)

Long bean

c)

Salted egg

d)

Tomato

109.

Which substance is correctly matched?

a)

Salted fish - Acidic

b)

Soursop - Acidic

c)

Vinegar - Alkaline

d)

Body wash - Neutral

110.

Substance X does not changes blue or red litmus paper. Which of the following is Substance P?

a)

Medicine

b)

Shampoo

c)

Salt solution

d)

Coffee

111.

Teacher has run out of litmus paper. Which of the following indicator can be used to replace the litmus paper?

a)

Chili

b)

Soy source

c)

Baking powder

d)

Hibiscus extract

112.

Acids taste

a)

fishy

b)

salty

c)

sour

d)

sweet

113.

The name of acid in lemon juice is

a)

ethanoic

b)

lemonic acid

c)

citric acid

d)

sulfuric acid

114.

Which one of these is an acid?

a)

salt water

b)

oven cleaner

c)

pure water

d)

vinegar

115.

Which one of these is an alkali?

a)

lemon juice

b)

oven cleaner

c)

sugar solution

d)

vinegar

116.

The colour of litmus in sulfuric acid is:

a)

blue

b)

green

c)

purple

d)

red

117.

The pH of pure water is

a)

1

b)

5

c)

7

d)

11

118.

The colour of universal indicator in a substance that is very acidic is:

a)

green

b)

orange

c)

purple

d)

red

119.

Universal indicator is added to a solution. The solution turns purple. The solution contains

a)

citric acid

b)

hydrochloric acid

c)

sodium hydroxide solution

d)

only water

120.

The reaction between an acid and an alkali is

a)

acidification

b)

condensation

c)

evaporation

d)

neutralisation

121.

A solution of pH 3 is mixed with a solution of pH 9. The final pH could be

a)

2

b)

6

c)

10

d)

12

122.

An acid reacted with an alkali to form a salt and water. Which of these are the reactants?

a)

acid and alkali

b)

acid and salt

c)

alkali and water

d)

salt and wate

123.

Indigestion tablets always contain

a)

acids

b)

antacids

c)

antibiotics

d)

indicators

124.

Which of the following is a base?

a)

citric acid

b)

copper oxide

c)

pure water

d)

vinegar

125.

The salt formed when sulfuric acid reacts with iron oxide (rust) is

a)

iron chloride

b)

iron hydroxide

c)

iron nitrate

d)

iron sulfate

126.

(a)   is the process that takes places when acid reacts with an alkali to form salt and water.

127.

Complete the word equation for neuralisation reaction.


Acid + Alkali --> _______ + _________

a)

sugar.....water

b)

salt......water

c)

salt......vinegar

d)

vinegar.....salt

128.

Which solutions can be mixed to form a salt solution?

a)

P and R

b)

Q and S

c)

P and S

d)

R and S

129.

Hydrochloric acid + Potassium hydroxide --> _______ + Water

a)

Calcium Sulphate

b)

Sodium Chloride

c)

Potassium Chloride

d)

Sodium Hydroxide

130.

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 sulphuric acid and sodium carbonate

d)

Acid hydrochloric and Sodium hydroxide

131.

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

132.

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

133.

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

134.

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

135.

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

136.

Name the method used to carry out neutralisation reaction

a)

Titration

b)

Condensation

c)

Transpiration

d)

Distillation

137.

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)

138.

Choose the correct characteristics of Acid.

a)

Ph > 7

b)

React with Metals

c)

Turns red litmus paper to blue

d)

Bitter taste

139.

If a Blue litmus paper is inserted into an orange juice. What colour does the litmus paper turns to?

(a)  

140.

Acid + Alkali —> ______ + Water

a)

Sugar

b)

Salt

c)

Hydrogen

d)

Oxygen

e)

Carbon Dioxide

141.

What are produce when Acid reacts with active metals?

a)

Water

b)

Salt

c)

Hydrogen Gas

d)

Oxygen Gas

e)

Helium Gas

142.

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

143.

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

144.

What acid or alkali are used to make car batteries?

a)

Citric acid

b)

Hydrochloric acid

c)

Sulphuric acid

d)

Formic acid

145.

What acid or alkali are used to make soap?

a)

Hydrochloric Acid

b)

Sodium Hydroxide

c)

Ammonium Solution

d)

Sulphuric acid

146.

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

147.

What substance has a pH of 7?

(a)  

148.
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
149.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
150.
Which of the following is a strong alkali?
a)
Sodium hydroxide
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium sulphate

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