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Worksheets

chemistry

Total questions: 160

Worksheet time: 2hrs 36mins

Name
Class
Date
1.

The word Science comes from the Latin word.....

a)

Scienty

b)

Sienta

c)

Scienta

d)

None of the Following

2.

I proposed the Atomic Theory

a)

P.C Ray

b)

John Dalton

c)

Marie Curie

d)

D.I Mendeleev

3.

What is Alchemy

a)

Turning Metals into Gold

b)

Turning Metals into Diamonds

c)

Turning Diamonds into metals

d)

Turning Gold into Metals

4.

Chemistry is a Branch of.....

a)

History

b)

Biology

c)

Science

d)

Geography

5.

I am useful in the Electronic Industry

a)

Silicon

b)

Germanium

c)

Clothing

d)

Cell

6.

Which of the following is not a building Material

a)

Mortar

b)

Bricks

c)

Steel

d)

Iron ore

7.

Which of the following is not used in a chemistry Lab

a)

Funnel

b)

Test Tube

c)

TNT

d)

Beaker

8.

Wire Gauze is used for Measuring Liquids

a)

True

b)

False

9.

I am used for Evaporating Substances

a)

China Dish

b)

Conical Flask

c)

Round Bottom Flask

d)

Bunsen Burner

10.

I am not used in the Clothing Industry

a)

Nylon

b)

Polyester

c)

Cotton

d)

Rubber

e)

Wool

11.

I am not used for Agriculture

a)

Pesticide

b)

Insecticide

c)

Mentracide

d)

Fertilizer

12.

Talcum powder is not made from Talc

a)

True

b)

False

13.

What did J.J Thomson Discover

a)

Electron

b)

Proton

c)

Radium

d)

Polonium

14.

Which of the following is not a Medicine

a)

Penicillin

b)

Paracetamol

c)

Aspirin

d)

Ampicillin

e)

Detergent

15.

Which of the Following is a Benefit of Chemistry

a)

Increased Pollution

b)

Explosives

c)

Depletion of Natural Resources

d)

Agriculture

16.

Chemistry experiments must be done in a......

a)

Classroom

b)

Food Industry

c)

Chemistry Lab

d)

House

17.

Chemistry is the same as Alchemy

a)

True

b)

False

18.

Necessary Safety Precautions must be taken before Performing any Chemical Experiments.

a)

True

b)

False

19.

Which of the following is not a branch of science.

a)

Mental Science

b)

Physical Science

c)

Natural Science

20.

Short hand representation for the atom of a specific element

a)

element

b)

atom

c)

symbol

21.

Symbol of copper is

a)

Co

b)

Cu

c)

Ca

22.

The valency of Chlorine in AlCl3 is

a)

1

b)

3

c)

2

23.

Sulphur shows valencies

a)

2

b)

4

c)

both

24.

The molecular formula for Ammonium carbonate is

a)

(NH4 )2CO3

b)

(NH4 )CO3

c)

(NH4 )2CO

25.

Name the elements present in Ammonia

a)

nitrogen

b)

hydrogen

c)

both nitrogen and hydrogen

26.

Most suitable element and most widely accepted standard unit for the measurement of atomic mass

a)

Oxygen

b)

Carbon

c)

Nitrogen

27.

The molecular formula for Nitric acid

a)

HNO3

b)

HNO2

c)

HNO

28.

Molecular formula for the oxide of calcium is

a)

CaO

b)

Ca2O

c)

none

29.

The symbol and valency of ammonium is

a)

NH4 , valency is 1

b)

NH3, valency is 1

c)

NH3 , valency is 2

30.

______________ reacts violently with water

a)

sodium chloride

b)

sodium

c)

pottasium

d)

sodium sulphide

31.

_________ represents one molecule of a compound and ______ is the shorthand language of scientists

(a)  

32.

Name 3 elements with valency 2

a)

zinc

b)

lead

c)

pottasium

d)

calcium

e)

sodium

33.

The force of cohesion between molecules of a liquid is less strong than a solid

a)

'false

b)

true

34.

The formula for phosphurus chloride is

a)

Ph3Cl2

b)

P2Cl3

c)

PCl3

d)

PCl2

35.

Write the Balances Equation for Ca(CO3)2 = CaO +CO2 and name the reactant

(a)  

36.

The number of Oxygen and Nitrogen atoms in 4 Molecules of copper nitrate

a)

24

b)

7x4

c)

26

d)

2x19

37.

What are Radicals ? ( pls use textbook definition only)

(a)  

38.

The valency of Sulphate is --------- and the elements present are

(a)  

39.

The formula of calcium nitrate is

a)

CANo3

b)

Ca(NO)2

c)

CAN0

d)

Ca(NO3 )2

40.

Photographic film have a coating of a compound called

(a)  

41.

Glass is a solid true or false

4 lines
42.

A body weighs 6N on earth. How much does it weighs on moon

a)

1N

b)

3N

c)

6N

d)

10N

43.

_______changes from place to place.

a)

Mass of body

b)

Weigh of body

c)

Volume of body

d)

Density of body

44.

How many characteristics of particles of matter are there?

a)

4

b)

2

c)

3

d)

5

45.

Particles move because of

a)

Kinetic energy

b)

Increase in density

c)

Increase in temperature

46.

Particles move because of

a)

Kinetic energy

b)

Increase in density

c)

Increase in temperature

47.

Matter particles stand still in bulk

a)

True

b)

False

48.

This is an example of

a)

Intermolecular space

b)

Kinetic energy

c)

Less force of attraction

49.

Efect of pressure is high in

a)

Gas

b)

Liquid

c)

Solid

50.

Whaat is the full form of LPG

(a)  

51.

Which of these are sublimable

a)

Naphthalene

b)

Camphor

c)

Antimony

d)

Iodine crystals

52.

DIGESTION OF FOOD IS A

a)

CHEMICAL CHANGE

b)

PERIODIC CHANGE

c)

PHYSICAL CHANGE

53.

THE RUSTING OF IRON IS A

a)

PHYSICAL CHANGE

b)

CHEMICAL CHANGE

54.

A GAS ON COOLING CHAGES INTO LIQUID. IT IS CALLED ________

a)

FREEZING

b)

EVAPORATION

c)

LIQUIFY

d)

CONDENSATION

55.

WHEN MATTER CHANGES ITS STATE FROM GAS TO SOLID WITHOUT PASSING THROUGH ITS LIQUID STATE. THIS PROCESS IS KNOWN AS-

a)

CONDENSATION

b)

SUBLIMATION

c)

DEPOSITION

d)

DECANTATION

56.

GLOWING OF BULB IS A

a)

CHEMICAL CHANGE

b)

PHYSICAL CHANGE

57.

CHANGING OF SEASONS IS A

a)

PERIODIC CHANGE

b)

CHEMICAL CHANGE

c)

PHYSICAL CHANGE

d)

YEARLY CHANGE

58.

WHICH OF THE FOLLOWING IS A FLUID ?

a)

PEN

b)

PAPER

c)

SPONGE

d)

AIR

59.

THE WORD 'KINETIC' COMES FROM WHICH GREEK WORD ?

a)

KINETIC

b)

KINESIS

c)

KINETER

d)

KINELS

60.

THE FRAGNANCE OF PERFUME IS SPREAD ALL OVER THE AIR.

THIS PROCESS IS KNOWN AS

a)

EVAPORATION

b)

FUSION

c)

DIFFUSION

d)

LIQUEFACTION

61.

WHEN SOLID NAPHTHALENE IS HEATED CHANGES INTO WHICH STATE

a)

LIQUID

b)

GAS

c)

SOLID

62.

WHEN WE HEAT SOLID THEN IT POSSES MORE KINETIC ENERGY.

a)

TRUE

b)

FALSE

63.

WHICH ONE IS THE INCORRECT PROPERTY OF LIQUID

a)

LIQUID HAS NO FIXED SHAPE

b)

LIQUID HAS FIXED VOLUME

c)

LIQUID IS A FLUID SUBSTANCE

d)

NONE OF THESE

64.

WHEN WE ADD ONE TEASPOON OF SUGAR IN ONE GLASS OF MILK, DOES THE VOLUME OF MILK INCREASES?

a)

YES

b)

NO

c)

MAYBE

65.

WHAT IS THE FORMULA OF SUCROSE ?

a)

C6 H12 O6

b)

C12 H12 O11

c)

C12 H22 O12

d)

C12 H22 O11

66.

BORON IS A

a)

METAL

b)

NON METAL

c)

METALLOID

67.

WHAT IS THE LATIN NAME OF LEAD

a)

PLUMBUM

b)

HYDRAGYRUM

c)

ARGENTUM

d)

FERRUM

68.

WHAT GETS EVOPORATED WHEN WE HEAT HYDRED COPPER SULPHATE ?

a)

WATER

b)

SULPHUR

c)

COPPER

d)

NONE OF THESE

69.

WHEN WE ADD VINEGAR TO BAKING SODA

WHICH GAS IS FORMED

a)

O2

b)

CO2

c)

H2

d)

NONE OF THESE

70.

WHICH GAS DOES NOT SUPPORT COMBUSTION

THEREFORE, WE USE IT AS A FIRE EXTINGUISHERS

a)

O2

b)

SO3

c)

CO2

d)

SO4

71.

WHICH GAS IS NON-REACTIVE ?

a)

HYDROGEN

b)

NITROGEN

c)

OXYGEN

d)

NEON

72.

What is H2O2?

a)

water

b)

hydrogen peroxide

c)

salt

d)

bleach

73.

What is h2o?

a)

water

b)

hydrogen peroxide

c)

salt

d)

bleach

74.

What is nacl?

a)

water

b)

hydrogen peroxide

c)

salt

d)

bleach

75.

Did you like the session?

a)

Yes

b)

no

c)

maybe

d)

kinda

76.

What is your teacher's name?

a)

MR

b)

SR

c)

SN

d)

SNR

77.

2 H and H2 stands for ___ and ___ respectively of hydrogen

a)

2 atoms

b)

2 atoms and 2 molecules

c)

2 atoms and 1 molecule

d)

2 molecules

78.

The formula of phosphine and ammonia is

a)

PH3 and NH3

b)

PH3 and H2S

c)

H2S and NH3

d)

PH3 and NH4

79.

What is the formula of lead acetate?

a)

Ca3N2

b)

(CH3COO)2Pb

c)

Mg3PO4

d)

Cr2(SO4)3

80.

Na2ZnO2 is the formula of

a)

sodium zinc oxide

b)

sodium zinte

c)

sodium zincate

d)

zinc natrium ate

81.

___ PbO + ____ NH3 -----> ____ Pb + ____ H2O + N2. Balance this eqn. Select the numbers in correct order as in question

a)

3, 2, 3, 3

b)

3, 1 , 2 , 2

c)

3,1, 3, 3

d)

2, 3, 2, 3

82.

___ P + ____ HNO3 -----> ____ NO2 + ____ H2O + H3PO4 . Balance this eqn. Select the numbers in correct order as in question

a)

1, 5, 5, 1

b)

1, 1 , 2 , 2

c)

1,1, 3, 3

d)

1, 5, 2, 3

83.

___ S + ____ HNO3 -----> ____ NO2 + ____ H2O + H2SO4 . Balance this eqn. Select the numbers in correct order as in question

a)

1, 6, 6, 2

b)

1, 6 , 2 , 2

c)

1,4, 3, 3

d)

1, 2, 2, 3

84.

___ NH3 + ___O2 -----> ____ NO + ____ H2O

Balance this eqn. Select the numbers in correct order as in question

a)

4, 5, 4, 6

b)

2, 5, 2, 6

c)

4, 5, 4, 4

d)

1, 2, 2, 3

85.

___ ZnS + ___O2 -----> ____ ZnO + ____ SO2

Balance this eqn. Select the numbers in correct order as in question

a)

4, 5, 4, 6

b)

2, 3, 2, 2

c)

4, 5, 4, 4

d)

2, 2, 2, 3

86.

Find the relative molecular mass of CuSO4.5H2O

Cu-64 H-1 O-16 S-32

a)

250

b)

249

c)

252

d)

240

87.

Find the percentage of water of crystallization in Na2CO3.10H2O

Na-23 C-12 O-16 H-1

a)

62%

b)

62.9%

c)

60%

d)

59.8%

88.

If the formula of a sulphate of a metal M is MSO4 What will be the formula of chloride of metal M?

a)

MCl

b)

MCl2

c)

MCl3

d)

M2Cl

89.

The coefficients for the chemical reaction

NaHCO3 ----------> Na2CO3 +H2O +CO2

a)

2,1,1,1

b)

1,2,1,1

c)

1,1,2,1

d)

1,1,1,2

90.

When dilute hydrochloric acid reacts with limestone then the products are calcium chloride,water and carbon dioxide gas .The statement representing above chemical change is

a)

CaCO3 +2HCl -------> CaCl2 +H2O + CO2

b)

CaCO3 + HCl --------> CaCl2 + H2O + CO2

c)

CAco3 + 2HCl ---------> CacL2 + H2o + CO2

d)

2CaCO3 +4HCl -------> 2CaCl2 +2H2O + 2CO2

91.

The chemical name for Nitric oxide (NO) is:

a)

Nitrogen peroxide

b)

Nitrogen Monoxide

c)

Dinitrogen oxide

d)

None of the above

92.

The correct formula of potassium dichromate is

a)
b)
c)
d)
93.

The chemical formula for Magnesium Nitride is:

a)

MgNO4

b)

(Mg)2NO3

c)

MnN2

d)

Mg3N2

94.

The valency of copper in CuO is:

a)

3+

b)

2+

c)

1+

d)

none of the above

95.

The above picture represents the symbol proposed by

a)

John Mendel

b)

John Dalton

c)

Johnny Deep

d)

Johnson and Johnson

96.

The colored figures in the following equation represents

3Cu + 8HNO3 ---------> 3Cu(NO3)2 + 2NO + 4H2O

a)

Coefficients

b)

Numerical values

c)

Frequency

d)

Atomicity

97.

The combining capacity of an element is called

a)
valency
b)
conductivity
c)
viscosity
d)
density
98.

The formula of Ammonium phosphate is

a)

(NH4)4PO4

b)

(NH4)3PO4

c)

(NH4)2PO4

d)

NH4PO4

99.

The mass of 18ml of water at 40C is equal to

a)

18g

b)

>18g

c)

<18g

d)

4g

100.

The ratio between hydrogen and oxygen in H2O by mass is

a)

2:16

b)

1:8

c)

3:18

d)

3:24

101.

A MOLECULE IS

a)
A group of atoms bonded together
b)

A type of element

c)
A form of energy
d)

a group of elements

102.

Which is a polyatomic ion

a)
Helium (He)
b)
Sodium (Na)
c)
Oxygen (O)
d)

Sulfate (SO4 2-)

103.

The chemical name of NH4OH

a)
Ammonium hydroxide
b)
Hydrogen nitrate
c)
Ammonium oxide
d)
Nitrogen hydroxide
104.

The molecular mass of C6H12O6 is

(a)  

105.

Calculate the mass of MgCl2

(a)  

106.

The combining capacity of an element is known as

a)
magnetism
b)
conductivity
c)
valency
d)
density
107.

The value of CO2 IS

(a)  

108.

The name of the Fe+3 is

a)
Iron(II) ion
b)
Iron(IV) ion
c)
Ferric ion
d)

Ferrous

109.

The element with symbol Ne is

a)

Sodium

b)
Nickel
c)
Neon
d)
Nitrogen
110.

How many atoms of sodium (Na) are in one molecule of baking soda?

a)

1

b)

2

c)

3

d)

4

111.

Ozone and Oxygen molecules are the same substance because they both are made only of oxygen atoms.

a)

true

b)

false

112.

What is the chemical symbol for carbon?

a)

C

b)

Ca

c)

Cn

d)

Crn

113.

Molecules bonded together make up atoms.

a)

true

b)

false

114.

How many atoms make up one molecule of laughing gas?

a)

1

b)

2

c)

3

d)

4

115.

When we combined vinegar and baking soda and created carbon dioxide what was the product?

a)

vinegar

b)

carbon dioxide and baking soda

c)

carbon dioxide

d)

vinegar and baking soda

116.

In a chemical reaction or change a new substance is not created.

a)

true

b)

false

117.

If there is a rise in temperature during a chemical reaction it is called a _________________ reaction.

a)

endothermic

b)

exothermic

118.

Atoms are mostly made up of...

a)

empty space

b)

electrons

c)

solids and liquids

119.

What did the second man drink?

a)

Arsenic

b)

Hydrogen Peroxide

c)

Helium Oxolate

120.

What is Batman's favorite element?

a)

Na

b)

H

c)

O

d)

Cl

121.

What does a represent?

a)

Proton

b)

Neutron

c)

Electron

122.

What does b represent?

a)

Proton

b)

Neutron

c)

Electron

123.

What does c represent?

a)

Proton

b)

Neutron

c)

Electron

124.

What is the atomic mass of this element?

a)

20

b)

60

c)

40

d)

41

125.

What is the symbol of this element?

a)

Calcium

b)

P

c)

Ca

d)

C

126.

protons

a)

negative charge, nucleus

b)

positive charge, shells

c)

positive charge , nucleus

d)

neutral charge, nucleus

127.

neutrons

a)

no charge, shells

b)

positive charge, nucleus

c)

neutral, no charge, nucleus

d)

negative charge, shells

128.

electrons

a)

no charge, nucleus

b)

positive charge, nucleus

c)

negative charge, shells

d)

negative charge, nucleus

129.
The characteristics or properties of metals include
a)
shiny and solid
b)
ductile and malleable
c)
lose electrons
d)
all of the above
130.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
131.
Water is an element?
a)
true
b)
false
132.

A molecule is

a)

a singular particle of a particular element

b)

another name for an element

c)

2 or more atoms that are combined

133.

A pure substance that is a compound is made out of

a)

particles of more than one type of atom

b)

particles of the same type of atom

c)

a mixture of two or more substances that can be physically separated

134.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
135.

What is the number of protons that the element in this image contain?

a)

14

b)

7

c)

15

d)

18

136.
"C" is the element symbol for which element?
a)
calcium
b)
carbon
c)
chlorine
d)
cadmium
137.

True or False? Neutrons have a negative charge

a)

True

b)

False

138.
A _________ is a substance made of two or more DIFFERENT elements chemically combined. 
a)
mixture
b)
compound
c)
substance 
139.
A mixture can be separated by ________ means. 
a)
physical
b)
chemical
140.

What is the atomic number of this element?

a)

20

b)

60

c)

40

d)

41

141.

Salts of normal elements [1 (IA) to 17 (VIIA)] are generally ……………

a)

Colourless

b)

Green

c)

White

d)

Blue

142.

An example of weak alkali solution is ……………….

a)

Sodium hydroxide

b)

Nitrogen dioxide

c)

Ammonium hydroxide

d)

Potassium hydroxide

143.

 

Both ammonium and sodium hydroxide are used in analytical chemistry for identifying ……………….. of salts.

a)

Cations

b)

Anions

c)

Electrons

d)

Both (a) and (b)

144.

Calcium salts with sodium hydroxide give ……………… precipitates.

a)

Pink

b)

Blue

c)

White

d)

Green

145.

Sodium zincate and water is obtained on reaction of ………………. With concentrated caustic soda.

a)

Lead

b)

Sodium

c)

Zink

d)

Zink hydroxide

146.

Oxides and hydroxides of certain metals such as …………….., ……………………, …………………. are amphoteric in nature.

a)

Zink, sodium, aluminium

b)

Zink, lead, copper

c)

Aluminium, copper, sodium

d)

Zink, lead, aluminum

147.

Which white precipitate is soluble in excess NH4OH ………………………….

a)

NaCl

b)

AgCl

c)

Mg(OH)2

d)

NaOH

148.

The hydroxide which is soluble in excess of NaoH is …………………..

a)

Al(OH)3

b)

Fe(OH)3

c)

Fe(OH)2

d)

Zn(OH)2

149.

Salts of which elements are generally coloured :

a)

Transition

b)

Normal

c)

Lanthanides

d)

Inner-transition

150.

Which one of the following salt solutions on reaction with excess sodium hydroxide solution gives a clear solution finally?

a)

Pb(NO3)2(aq)

b)

CuSO4(aq)

c)

FeCl3(aq)

d)

ZnSO4(aq)

151.

The precipitate of which of the following compounds is soluble in excess of ammonia solution?

a)

Iron(II) chloride

b)

Magnesium chloride

c)

Copper(II) sulphate

d)

Lead nitrate

152.

Which one of the following salt solutions on reaction with excess of ammonium hydroxide solution results finally in dissolution of the precipitate first formed?

a)

AlCl3(aq)

b)

FeSO4(aq)

c)

Fe(SO4)3(aq)

d)

ZnSO4(aq)

153.

Hydroxide of this metal is soluble in sodium hydroxide solution :

a)

Magnesium

b)

Lead

c)

Silver

d)

Copper

154.

The hydroxide which is soluble in excess of NaOH is:

a)

Zn(OH)2

b)

Fe(OH)2

c)

Fe(OH)3

d)

Al(OH)3

155.

Name the regent from the following which can be used to distinguish zinc nitrate solution from magnesium nitrate.

a)

NH4OH(aq)

b)

NaOH(aq)

c)

BaCl2

d)

H2SO4

156.

The oxide and hydroxide of which metal is amphoteric :

a)

Zinc

b)

Copper

c)

Iron

d)

Manganese

157.

A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is:

a)

Calcium chloride

b)

Ferrous chloride

c)

Ferric chloride

d)

Copper chloride

158.

Which soln. becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it.

a)

Copper nitrate

b)

Iron [II] sulphate

c)

Iron [III] chloride

d)

Lead nitrate

159.

The salt whose soln. gives a pale green precipitate with NaOH solution and white ppt. with BaCl2 soln. is:

a)

Iron (III) sulphate

b)

Iron (II) sulphate

c)

Iron (II) chloride

d)

Iron (III) chloride

160.

Find the odd one with reason (note : valency is not a criterion ) :

a)

Al(OH)3

b)

Pb(OH)2

c)

Mg(OH)2

d)

Zn(OH)2

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