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Chemistry Quiz

Total questions: 143

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

Which best defines chemistry?

a)

Study of numbers and symbols

b)

Study of living things

c)

Study of matter, its composition and changes

d)

Study of weather

e)

Study of forces

2.

Which of the following is NOT matter?

a)

Air

b)

Light

c)

Water vapour

d)

Smoke

e)

Dust

3.

The smallest particle of an element that can take part in a chemical reaction is the:

a)

Ion

b)

Atom

c)

Molecule

d)

Nucleus

e)

Cell

4.

A homogeneous mixture is best described as one that:

a)

Has uniform composition throughout

b)

Can be filtered easily

c)

Has large particles visible to naked eye

d)

Is always a solid

e)

Separates on standing

5.

Which apparatus is most suitable for heating small volumes of liquids strongly?

a)

Beaker

b)

Measuring cylinder

c)

Evaporating basin

d)

Pipette

e)

Funnel

6.

The primary purpose of fractional distillation is to separate liquids that:

a)

Are immiscible

b)

Have widely different boiling points

c)

Have close boiling points

d)

Decompose on heating

e)

Are solids at room temperature

7.

Which separation technique is based on differences in particle size?

a)

Filtration

b)

Decantation

c)

Sieving

d)

Chromatography

e)

Crystallization

8.

The method used to separate camphor from salt is:

a)

Filtration

b)

Sublimation

c)

Distillation

d)

Sedimentation

e)

Centrifugation

9.

Which of the following is a chemical change?

a)

Melting of wax

b)

Dissolving sugar

c)

Rusting of iron

d)

Breaking glass

e)

Condensation of steam

10.

Which statement is TRUE about compounds?

a)

Have variable composition

b)

Components can be separated by physical means

c)

Formed by chemical combination in fixed ratios

d)

Properties are same as those of constituents

e)

Not represented by formulae

11.

The SI unit of temperature is:

a)

Degree Celsius

b)

Kelvin

c)

Fahrenheit

d)

Rankine

e)

Joule

12.

Which property is intensive?

a)

Mass

b)

Volume

c)

Length

d)

Density

e)

Amount of substance

13.

Which piece of apparatus measures fixed volumes accurately?

a)

Burette

b)

Pipette

c)

Beaker

d)

Conical flask

e)

Test tube

14.

The mixture of oil and water is best separated by:

a)

Filtration

b)

Using a separating funnel

c)

Evaporation

d)

Chromatography

e)

Crystallization

15.

Paper chromatography separates substances based on differences in:

a)

Density

b)

Solubility and adsorption

c)

Melting point

d)

Colour only

e)

Conductivity

16.

The process used to obtain pure water from sea water in a laboratory is:

a)

Evaporation

b)

Simple distillation

c)

Filtration

d)

Crystallization

e)

Decantation

17.

A mixture of sand and salt can be separated by:

a)

Sublimation and decantation

b)

Dissolving, filtration and evaporation

c)

Magnet and filtration

d)

Chromatography only

e)

Distillation only

18.

The separation of petroleum into fractions is carried out by:

a)

Steam distillation

b)

Fractional distillation

c)

Simple distillation

d)

Chromatography

e)

Filtration

19.

Which fraction of crude oil is used mainly as fuel for aircraft?

a)

Petrol

b)

Kerosene

c)

Diesel

d)

Bitumen

e)

Lubricating oil

20.

The main raw materials for cement manufacture are:

a)

Limestone and clay

b)

Sand and soda ash

c)

Bauxite and cryolite

d)

Nitrogen and hydrogen

e)

Iron ore and coke

21.

The Haber process produces:

a)

Methanol

b)

Ammonia

c)

Sulfuric acid

d)

Sodium hydroxide

e)

Ethanol

22.

Which conditions favour the Haber process?

a)

High temperature, low pressure, platinum catalyst

b)

Low temperature, high pressure, iron catalyst

c)

High temperature, high pressure, copper catalyst

d)

Low temperature, low pressure, nickel catalyst

e)

Room temperature, no catalyst

23.

The Contact process is used in the manufacture of:

a)

Ammonia

b)

Sulfuric acid

c)

Nitric acid

d)

Sodium carbonate

e)

Bleach

24.

The catalyst used in the Contact process is:

a)

Iron

b)

Platinum

c)

Vanadium(V) oxide

d)

Nickel

e)

Copper

25.

The raw materials for the Solvay process are limestone and:

a)

Nitrogen

b)

Brine

c)

Ethene

d)

Coal tar

e)

Ammonia nitrate

26.

A property that distinguishes solids from liquids is that solids:

a)

Have definite shape

b)

Flow easily

c)

Are compressible

d)

Have no surface

e)

Expand greatly on heating

27.

Which of the following shows Brownian motion best?

a)

Smoke particles in air

b)

Steel balls in oil

c)

Sand in water

d)

Pebbles in a jar

e)

Iron filings on paper

28.

Evidence for the particulate nature of matter is provided by:

a)

Osmosis

b)

Diffusion

c)

Filtration

d)

Crystallization

e)

Distillation

29.

Which is NOT a physical method of separation?

a)

Chromatography

b)

Distillation

c)

Crystallization

d)

Electrolysis

e)

Filtration

30.

Distilled water differs from rain water because rain water usually contains:

a)

Sand

b)

Dissolved gases

c)

Sugar

d)

Oil droplets

e)

Alcohol

31.

The safety flame on a Bunsen burner is:

a)

Blue non-luminous

b)

Yellow luminous

c)

Greenish

d)

Colourless

e)

White

32.

In fractional distillation, the fractionating column improves separation by providing:

a)

Heat sink

b)

Large surface area for repeated condensation and vaporization

c)

Cooling chamber only

d)

Pressure reduction only

e)

A place to collect residue

33.

Which mixture can be separated using a magnet?

a)

Copper and sulfur

b)

Iron filings and sulfur

c)

Sand and salt

d)

Copper(II) oxide and carbon

e)

Water and ethanol

34.

Which statement about mixtures is correct?

a)

Components are chemically combined

b)

Components retain their properties

c)

Fixed composition

d)

Represented by chemical formulae

e)

Cannot be separated

35.

The most suitable method to obtain crystals of copper(II) sulfate from its solution is:

a)

Filtration of the solution

b)

Evaporation to dryness

c)

Evaporation to saturation and crystallization

d)

Distillation

e)

Sublimation

36.

The separation of dyes on paper chromatogram shows different:

a)

pH values

b)

Rf values

c)

Refractive indices

d)

Densities

e)

Boiling points

37.

The industrial conversion of ethene to ethanol is by:

a)

Fermentation

b)

Hydration with acid catalyst

c)

Oxidation

d)

Polymerization

e)

Hydrogenation

38.

Which industry uses bauxite as a raw material?

a)

Fertilizer

b)

Aluminium

c)

Glass

d)

Cement

e)

Textile

39.

The pollution mainly associated with SO₂ from industries is:

a)

Ozone depletion

b)

Acid rain

c)

Global cooling

d)

Radioactivity

e)

Photochemical smog only

40.

Which gas is used for the manufacture of ammonia?

a)

Oxygen

b)

Nitrogen and hydrogen

c)

Nitrogen and oxygen

d)

Carbon monoxide and hydrogen

e)

Chlorine and hydrogen

41.

In water treatment, alum is added to:

a)

Disinfect water

b)

Improve taste

c)

Coagulate suspended particles

d)

Remove hardness

e)

Add fluoride

42.

The correct order of petroleum fractions from lowest to highest boiling point is:

a)

Bitumen → Diesel → Kerosene → Petrol

b)

Petrol → Kerosene → Diesel → Bitumen

c)

Diesel → Petrol → Kerosene → Bitumen

d)

Kerosene → Petrol → Diesel → Bitumen

e)

Petrol → Diesel → Kerosene → Bitumen

43.

Which statement best describes an element?

a)

Substance made of identical atoms

b)

Substance made of different atoms

c)

Substance that can be split by physical means

d)

Variable composition

e)

Always metallic

44.

An extensive property depends on:

a)

Type of substance only

b)

Amount of substance

c)

Temperature only

d)

Pressure only

e)

Shape only

45.

The laboratory drying agent for acidic gases like HCl is:

a)

Calcium chloride

b)

Quicklime (CaO)

c)

Concentrated H₂SO₄

d)

Silica gel

e)

Anhydrous copper(II) sulfate

46.

Which method separates a precipitate from its mother liquor quickly?

a)

Decantation

b)

Evaporation

c)

Centrifugation

d)

Chromatography

e)

Sublimation

47.

A saturated solution is one which:

4 lines
48.

mother liquor quickly?

a)

Decantation

b)

Evaporation

c)

Centrifugation

d)

Chromatography

e)

Sublimation

49.

A saturated solution is one which:

a)

Contains no solute

b)

Contains solute that can still dissolve

c)

Contains maximum solute at given temperature

d)

Is always concentrated

e)

Is always dilute

50.

Which is NOT a petrochemical?

a)

Polyethylene

b)

PVC

c)

Nylon

d)

Cellulose

e)

Polystyrene

51.

The main constituent of natural gas is:

a)

Ethane

b)

Methane

c)

Propane

d)

Butane

e)

Ethene

52.

Which process is used to obtain pure nitrogen from liquid air?

a)

Fractional distillation

b)

Electrolysis

c)

Filtration

d)

Chromatography

e)

Evaporation to dryness

53.

Which pair represents a heterogeneous mixture?

a)

Air and salt solution

b)

Brass and vodka

c)

Oil and water

d)

Sugar solution and perfume

e)

Petrol and kerosene

54.

Which is a correct safety practice?

a)

Pipette by mouth

b)

Add water to acid

c)

Add acid to water

d)

Heat closed test tube

e)

Taste unknown chemicals

55.

Which is a physical property?

a)

Flammability

b)

Reactivity with acids

c)

Colour

d)

Corrosion

e)

Decomposition

56.

The instrument used to measure mass is:

a)

Thermometer

b)

Meter rule

c)

Balance

d)

Stop watch

e)

Burette

57.

The term "filtrate" refers to:

a)

Solid retained on filter paper

b)

Liquid that passes through filter

c)

Solid dissolved in solvent

d)

Insoluble residue

e)

Volatile distillate

58.

Dry air is obtained by passing air through:

a)

Limewater

b)

Conc. H₂SO₄

c)

Aqueous NaOH

d)

Limewater and then NaOH

e)

Dilute HCl

59.

Sea sand is purified for glass manufacture by removing:

a)

NaCl

b)

CaCO₃

c)

Fe₂O₃ impurities

d)

SiO₂

e)

SO₃

60.

Which raw material supplies sodium in glass making?

a)

Soda ash (Na₂CO₃)

b)

Limestone

c)

Sand

d)

Feldspar

e)

Dolomite

61.

The component of crude oil used for road surfacing is:

a)

Diesel

b)

Lubricating oil

c)

Bitumen

d)

Petrol

e)

Kerosene

62.

The colour of a pure, non-luminous Bunsen flame is:

a)

Yellow

b)

Blue

c)

Red

d)

Green

e)

White

63.

Which is NOT an industrial pollutant?

a)

Carbon monoxide

b)

Nitrogen oxides

c)

Water vapour

d)

Sulfur dioxide

e)

Lead compounds

64.

A colloid differs from a true solution because colloids:

a)

Pass through ordinary filter paper

b)

Settle on standing

c)

Show Tyndall effect

d)

Have visible particles

e)

Cannot be charged

65.

The separation of cream from milk in dairies is by:

a)

Filtration

b)

Centrifugation

c)

Chromatography

d)

Distillation

e)

Sublimation

66.

An azeotrope is:

a)

A solute

b)

A constant-boiling mixture

c)

A colloid

d)

A precipitate

e)

A hydrate

67.

A solvent front in chromatography is the:

a)

Starting line

b)

Furthest point reached by solvent

c)

Line of best fit

d)

Baseline of paper

e)

Spot of solute only

68.

The apparatus for accurately delivering variable volumes in titration is the:

a)

Pipette

b)

Burette

c)

Volumetric flask

d)

Measuring cylinder

e)

Conical flask

69.

Which is NOT a raw material for fertilizer production?

a)

Nitrogen

b)

Phosphates

c)

Potash

d)

Limestone

e)

Silver

70.

Which is used to remove temporary hardness of water industrially?

a)

Addition of slaked lime

b)

Ion-exchange resins

c)

Boiling only

d)

Adding NaCl

e)

Adding sand

71.

The major product of the Ostwald process is:

a)

Nitric acid

b)

Sulfuric acid

c)

Ammonia

d)

Methanol

e)

Sodium carbonate

72.

In the contact process, SO₂ is oxidized to SO₃ in presence of:

a)

Heat only

b)

V₂O₅ catalyst

c)

UV light

d)

Fe₂O₃ catalyst

e)

CuO catalyst

73.

Which pair are allotropes?

a)

Graphite and diamond

b)

O₂ and CO₂

c)

H₂ and He

d)

Na and K

e)

H₂O and H₂O₂

74.

The conversion of water to steam is:

a)

Chemical change

b)

Nuclear change

c)

Physical change

d)

Electrochemical change

e)

Photochemical change

75.

The best method to recover salt from a salt solution contaminated with sand is:

a)

Distillation only

b)

Filtration then evaporation

c)

Crystallization only

d)

Sublimation

e)

Chromatography

76.

Which best describes decantation?

a)

Pouring off supernatant liquid from sediment

b)

Passing through filter paper

c)

Evaporating solvent

d)

Freezing solution

e)

Adding coagulant

77.

The phenomenon responsible for mixing of perfumes in air is:

a)

Osmosis

b)

Diffusion

c)

Effervescence

d)

Adsorption

e)

Capillarity

78.

The law that mass is conserved in a chemical reaction is by:

a)

Dalton

b)

Lavoisier

c)

Avogadro

d)

Boyle

e)

Charles

79.

Which is a renewable industrial feedstock?

a)

Crude oil

b)

Coal

c)

Biomass

d)

Natural gas

e)

Uranium

80.

The petroleum fraction used as lubricants is:

a)

Naphtha

b)

Gas oil

c)

Lubricating oil fraction

d)

Petrol

e)

Refinery gas

81.

The main environmental issue in cement manufacture is:

a)

Noise only

b)

Dust and CO₂ emissions

c)

Excess water use

d)

Excess hydrogen

e)

Ozone emission

82.

Which instrument is used to measure volume of a gas?

a)

U-tube manometer

b)

Gas syringe

c)

Pipette

d)

Thermometer

e)

Hygrometer

83.

A solution that resists change in pH on addition of small acid or base is:

a)

Neutral solution

b)

Buffer solution

c)

Indicator solution

d)

Supersaturated solution

e)

Colloid

84.

The property that explains detergent action is:

a)

Hygroscopicity

b)

Amphiphilic nature

c)

Radioactivity

d)

Magnetism

e)

Combustibility

85.

Which is NOT associated with water treatment?

a)

Screening

b)

Coagulation

c)

Chlorination

d)

Cracking

e)

Filtration

86.

The main components of glass are:

a)

SiO₂, Na₂CO₃, CaCO₃

b)

SiO₂, NaCl, CaO

c)

SiO₂ alone

d)

Na₂SO₄ and CaSO₄

e)

SiC and NaOH

87.

The separation of ethanol and water in a lab is best done by:

a)

Filtration

b)

Simple distillation

c)

Fractional distillation

d)

Sublimation

e)

Decantation

88.

The unit for amount of substance is:

a)

Mole

b)

Gram

c)

Liter

d)

Meter

e)

Pascal

89.

The technique used to remove coloured impurities during sugar refining is often:

a)

Chromatography

b)

Adsorption on activated carbon

c)

Sublimation

d)

Simple filtration

e)

Distillation

90.

What is the mobile phase in paper chromatography?

a)

Paper

b)

Solvent

c)

Solute

d)

Ink

e)

Air

91.

Which is a suspension?

a)

Salt solution

b)

Starch in water freshly stirred

c)

Vinegar

d)

Vodka

e)

Air

92.

The addition of calcium hydroxide to soft drinks would:

a)

Increase sweetness

b)

Neutralize acids

c)

Increase CO₂ content

d)

Precipitate sugar

e)

Produce alcohol

93.

The first step in a typical water treatment plant is:

a)

Filtration

b)

Chlorination

c)

Coagulation

d)

Screening

e)

Softening

94.

The fraction of crude oil used mainly for making chemicals is:

a)

Naphtha

b)

Diesel

c)

Bitumen

d)

Kerosene

e)

Fuel oil

95.

The physical state with highest compressibility is:

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma only

e)

All equal

96.

Which is an example of a pure substance?

a)

Steel

b)

Bronze

c)

Distilled water

d)

Milk

e)

Seawater

97.

Which is a use of nitrogen in industry?

a)

Fuel in engines

b)

Inert atmosphere for food packaging

c)

Bleaching textiles

d)

Catalyst in Haber process

e)

Acid formation

98.

A method to concentrate ore particles based on density is:

a)

Froth flotation

b)

Magnetic separation

c)

Gravity separation

d)

Leaching

e)

Roasting

99.

Which statement about colloids is true?

a)

Particles are atoms

b)

Show Tyndall effect

c)

Can be filtered by ordinary paper

d)

Always coloured

e)

Settle rapidly

100.

The unit operation "cracking" in petroleum industry is used to:

a)

Convert heavy fractions to lighter ones

b)

Remove sulfur

c)

Increase octane of petrol only

d)

Separate fractions

e)

Remove water

101.

The octane number of petrol indicates its:

a)

Colour

b)

Density

c)

Anti-knock quality

d)

Sulfur content

e)

Boiling point

102.

In crystallization, "mother liquor" refers to:

a)

Solid crystals collected

b)

Solvent used

c)

Remaining solution after crystals form

d)

Distillate

e)

Precipitate

103.

Which method is suitable to purify a soluble solid that decomposes on strong heating?

a)

Evaporation to dryness

b)

Crystallization at low temperature

c)

Sublimation

d)

Strong heating

e)

Filtration only

104.

The best technique to separate pigments from ink is:

a)

Filtration

b)

Paper chromatography

c)

Evaporation

d)

Distillation

e)

Decantation

105.

Which mixture can be separated by fractional crystallization?

a)

Ethanol and water

b)

NaCl and KNO₃ from solution

c)

Oil and water

d)

Iron and sulfur

e)

Sand and sawdust

106.

Which is an example of adsorption?

a)

Salt dissolving in water

b)

Dye taken up by charcoal

c)

Steam condensing

d)

Sugar crystallizing

e)

Ice melting

107.

The industrial preparation of soap is known as:

a)

Polymerization

b)

Saponification

c)

Hydrogenation

d)

Fermentation

e)

Dehydration

108.

Which is a chemical hazard commonly controlled by scrubbers in chimneys?

a)

CO₂

b)

SO₂

c)

N₂

d)

O₂

e)

Ar

109.

Which is used to test for CO₂ in lab emissions?

a)

Acidified KMnO₄

b)

Limewater

c)

Litmus paper

d)

Anhydrous CuSO₄

e)

Benedict's solution

110.

Steel is an alloy of:

a)

Fe and Cu

b)

Fe and C

c)

Fe and Al

d)

Fe and Zn

e)

Fe and Pb

111.

Which is NOT a typical unit process in chemical industry?

a)

Oxidation

b)

Reduction

c)

Filtration

d)

Polymerization

e)

Hydrolysis

112.

The separation of lead(II) chloride precipitate from solution is by:

a)

Distillation

b)

Filtration

c)

Sublimation

d)

Chromatography

e)

Crystallization

113.

The principle of separation using a separating funnel is difference in:

a)

Density of immiscible liquids

b)

Boiling points

c)

Particle size

d)

Colour

e)

Reactivity

114.

Which of the following is hygroscopic?

a)

NaCl

b)

CaCl₂

c)

Sand

d)

Paraffin

e)

Sucrose

115.

The colour change when wet red litmus is exposed to ammonia gas is:

a)

Red to blue

b)

Blue to red

c)

Red to red

d)

Blue to blue

e)

No change

116.

Which is used as an anti-caking agent in fertilizers?

a)

Silica

b)

Talc

c)

NaCl

d)

Urea

e)

Ammonium nitrate

117.

The component of air that supports combustion is:

a)

Nitrogen

b)

Oxygen

c)

Carbon dioxide

d)

Argon

e)

Water vapour

118.

The main impurity removed during coking of coal is:

a)

Water only

b)

Volatile matter

c)

Ash only

d)

Sulfuric acid

e)

Nitric acid

119.

Slaked lime is:

a)

CaO

b)

Ca(OH)₂

c)

CaCO₃

d)

CaSO₄

e)

CaCl₂

120.

The process of coating iron with zinc to prevent rusting is:

a)

Tinning

b)

Galvanization

c)

Anodizing

d)

Painting

e)

Alloying

121.

The separation technique that depends on different rates of flow in a stationary phase is:

a)

Distillation

b)

Chromatography

c)

Evaporation

d)

Crystallization

e)

Sedimentation

122.

Which is NOT a use of sulfuric acid?

a)

Fertilizer manufacture

b)

Drying agent for gases

c)

Electrolyte in car batteries

d)

Manufacture of detergents

e)

Baking bread

123.

Which is an example of a closed system in an experiment?

a)

Open beaker

b)

Sealed flask

c)

Running stream

d)

Burning match in air

e)

Hotplate

124.

In water softening by ion exchange, Ca²⁺ and Mg²⁺ are replaced by:

a)

H⁺

b)

K⁺

c)

Na⁺

d)

Cl⁻

e)

SO₄²⁻

125.

The main by-product of soap making useful in cosmetics is:

a)

Glycerol

b)

Ethanol

c)

Methanol

d)

Propane

e)

Butene

126.

The laboratory reagent used to dry ammonia gas is:

a)

Conc. H₂SO₄

b)

CaO

c)

CaCl₂

d)

Anhydrous CuSO₄

e)

P₂O₅

127.

Which is NOT a step in crystallization?

a)

Preparation of saturated solution

b)

Filtration of hot solution

c)

Rapid cooling under a fan

d)

Allowing slow cooling

e)

Drying crystals

128.

A mixture of ethanol and benzene is separated by:

a)

Fractional distillation

b)

Separating funnel

c)

Filtration

d)

Sublimation

e)

Chromatography

129.

Which is a use of naphtha?

a)

Road surfacing

b)

Jet fuel

c)

Chemical feedstock

d)

Lubrication

e)

Domestic heating oil

130.

An emulsion is a:

a)

Gas in solid

b)

Liquid in liquid colloid

c)

Solid in gas

d)

Solid in liquid solution

e)

Gas in liquid solution

131.

The Rf value in chromatography is the ratio of:

a)

Solvent distance/solute distance

b)

Solute distance/solvent distance

c)

Solubility/adsorption

d)

Concentration/volume

e)

Time/temperature

132.

The unit for density in SI derived form is:

a)

kg m⁻¹

b)

kg m⁻³

c)

kg m²

d)

N m⁻³

e)

mol m⁻³

133.

Which is a property of gases?

a)

Definite volume

b)

Definite shape

c)

Highly compressible

d)

Incompressible

e)

Rigid

134.

The industrial production of bleach (NaOCl) involves chlorination of:

a)

NaOH solution

b)

Na₂CO₃ solution

c)

NaCl solid

d)

Ca(OH)₂ solid

e)

HCl solution

135.

Which is a greenhouse gas emitted by industry?

a)

O₂

b)

N₂

c)

CO₂

d)

Ar

e)

Ne

136.

In fractional distillation of crude oil, the top of the column is:

a)

Hottest

b)

Coldest

c)

Same as bottom

d)

Pressurized

e)

Flooded with steam only

137.

The correct order for separating a mixture of salt, sand and iron filings is:

a)

Filtration → Magnet → Evaporation

b)

Magnet → Dissolve → Filtration → Evaporation

c)

Dissolve → Magnet → Filtration → Evaporation

d)

Magnet → Filtration → Distillation

e)

Sublimation → Magnet → Filtration

138.

Which substance sublimes on heating?

a)

NaCl

b)

Iodine

c)

Copper(II) sulfate pentahydrate

d)

Calcium carbonate

e)

Sugar

139.

In the lab, the safest way to smell a chemical is to:

a)

Inhale directly

b)

Waft vapour toward nose

c)

Taste a little

d)

Ask a friend to smell

e)

Heat first, then smell

140.

Which is true about a supersaturated solution?

a)

Contains less solute than saturated

b)

Unstable; crystallizes on seeding

c)

Always at low temperature

d)

Always at high pH

e)

Does not crystallize

141.

The main raw materials for ammonia are obtained from:

a)

Air and water gas

b)

Coal only

c)

Brine only

d)

Limestone only

e)

Petroleum coke only

142.

A mixture of NaCl and NH₄Cl can be separated by:

a)

Filtration then evaporation

b)

Sublimation of NH₄Cl then dissolution

c)

Distillation

d)

Chromatography

e)

Sieving

143.

The piece of apparatus used to support a crucible while heating is:

a)

Tripod stand

b)

Retort stand

c)

Clamp

d)

Wire gauze/clay triangle

e)

Burette stand

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