Multiple Choice Questions
Carbon and Its Compounds
Practice Questions with Answers
Total 128 questions available
Q. 1
Covalent compounds
A
are formed by the sharing of electrons in the bonding atoms.B
are formed between atoms of metals and non-metalsC
are mostly soluble in waterD
have high melting and boiling pointClick an option to check your answer
Q. 2
The first member of alkyne homologous series is
A
MethaneB
PropyneC
EthyneD
EtheneClick an option to check your answer
Q. 3
Which is denatured spirit?
A
ethanol and methanol (50%)B
ethanol onlyC
ethanol and methanol (5%)D
methanol onlyClick an option to check your answer
Q. 4
What is the phenomenon of the existence of an element in two or more physical forms within the same physical state called?
A
IsomerismB
AllotropyC
PolymerizationD
CatenationClick an option to check your answer
Q. 5
Which of the following is NOT an allotrope of carbon?
A
GraphiteB
DiamondC
FullerenesD
BuckyballsClick an option to check your answer
Q. 6
Carbon forms four covalent bonds by sharing its
four valence electrons with four univalent atoms,
e.g., hydrogen. After the formation of four bonds,
carbon attains the electronic configuration of:
A
ArgonB
NeonC
HeliumD
KryptonClick an option to check your answer
Q. 7
Carbon forms stronger bonds due to its:
A
Weak nucleusB
Strong van der Waals forcesC
Weak covalent bondsD
Strong force of attraction in its nucleusClick an option to check your answer
Q. 8
Which of the following sets of compounds have the same molecular formulas?
A
Butane and iso-butaneB
Cyclohexane and hexeneC
Propanal and propanoneD
All of the aboveClick an option to check your answer
Q. 9
Which type of carbon compounds commonly exhibit structural isomerism?
A
AlkanesB
AminesC
HalidesD
AlcoholsClick an option to check your answer
Q. 10
No of protons, electrons and neutrons respectively in carbon atom is
A
one double bondB
none of the aboveC
all single bondsD
one triple bondClick an option to check your answer
Q. 11
Catenation is maximum in:
A
CarbonB
OxygenC
SulphurD
PhosphorousClick an option to check your answer
Q. 12
Which of the following does not belong to the
same homologous series?
A
C3H8B
C₂HC
CH4D
C₂H6Click an option to check your answer
Q. 13
C₂H, belongs to the homologous series of:
A
AlkanesB
Cyclo alkanesC
AlkenesD
AlkynesClick an option to check your answer
Q. 14
Butanone is a four-carbon compound with the functional group
A
aldehyde.B
alcohol.C
carboxylic acid.D
ketone.Click an option to check your answer
Q. 15
The bond between two identical non-metallic
atom has a pair of electron :
A
unequally shared between two atoms.B
transferred completely from one atom to anotherC
with identical spins.D
equally shared between them.Click an option to check your answer
Q. 16
Ethane, with the molecular formula C2H6 has
A
8 covalent bonds.B
9 covalent bonds.C
6 covalent bonds.D
7 covalent bonds.Click an option to check your answer
Q. 17
Which of the following is correct about the structure of diamond?
A
Electrons move freely through the structure.B
Carbon atoms conduct electricity in the molten state.C
Carbon atoms are held together by single covalent bonds.D
Layers of atoms slide easily over each other.Click an option to check your answer
Q. 18
IUPAC name of first member of homologous series of ketones is
A
ButanoneB
PropanoneC
EthanoneD
methanoneClick an option to check your answer
Q. 19
Number of free electron(s) in each carbon atom in graphite is/are
A
fourB
twoC
oneD
three.Click an option to check your answer
Q. 20
Which of the following statements about diamond and graphite is true?
A
They have same chemical properties.B
They have same electrical conductivityC
They have same degree of hardnessD
They have same crystal structureClick an option to check your answer
Q. 21
In structural isomerism, differences occur in the:
A
Number of atomsB
Spatial arrangementC
ElectronegativityD
Molecular weightClick an option to check your answer
Q. 22
Hydrophobic end of micelles attack on ______
A
BaseB
AcidC
WaterD
OilClick an option to check your answer
Q. 23
A hydrocarbon should have a minimum of how many carbon atoms to show isomerism?
A
SixB
FiveC
FourD
ThreeClick an option to check your answer
Q. 24
What distinguishes structural isomers from other types of isomers?
A
Number of bondsB
Atomic numberC
Arrangement of atomsD
Presence of functional groupsClick an option to check your answer
Q. 25
In diamond, each carbon atom is bonded to four
other carbon atoms to form:
A
a structure of a ringB
a hexagonal arrayC
a rigid three-dimensional structureD
a structure in the shape of a footballClick an option to check your answer
Q. 26
The first member of the alkyne homologous series is
A
ethyneB
methaneC
propyneClick an option to check your answer
Q. 27
100% pure ethanol is called
A
Absolute alcoholB
Denatured alcoholC
Power alcoholD
Rectified spiritClick an option to check your answer
Q. 28
The number of isomers of pentane is:
A
2B
5C
4D
3Click an option to check your answer
Q. 29
The substance not responsible for the hardness of water is
A
Calcium hydrogen carbonateB
Calcium carbonate Magnesium carbonateC
Sodium nitrateClick an option to check your answer
Q. 30
The isomers always possess similar
A
molecular formulaB
physical propertiesC
structural formulaD
chemical propertiesClick an option to check your answer
Q. 31
Which of the following statements regarding graphite is not correct?
A
Which of the following statements regarding graphite is not correct?B
Graphite is a bad conductor of heat and electricity.C
Graphite possesses a metallic lustre and soapy touch.D
Graphite is manufactured by heating coke at 3000oCClick an option to check your answer
Q. 32
Which allotrope of carbon is in the form of the geodesic globe?
A
FullereneB
Carbon nanotubeC
DiamondD
GraphiteClick an option to check your answer
Q. 33
__________ is widely used as a fuel and is a major component of bio-gas and CNG. It is also one of the simplest compounds formed by carbon.
A
MethaneB
Carbon dioxideC
PropaneD
EthaneClick an option to check your answer
Q. 34
Why does carbon form compounds mainly by covalent bonding?
A
It shares its valence electrons to complete its octet.B
There are four electrons in the outermost shell of carbon.C
It requires large amount of energy to form C4+ or C4–D
All the aboveClick an option to check your answer
Q. 35
Which of the following is not a characteristic of
Diamond?
A
Hardest substanceB
High thermal conductivityC
High refractive indexD
Good conductor of electricityClick an option to check your answer
Q. 36
Rigid Three dimensional structure of carbon allotrope forming 4 bond with each carbon.
A
DiamondB
GraphiteC
Carbon ballD
FullereneClick an option to check your answer
Q. 37
Carbon Exists In The Atmosphere In The Form Of:
A
Carbon monoxide in traces and carbon dioxideB
Only Carbon dioxideC
CoalD
Only carbon monoxideClick an option to check your answer
Q. 38
From where can we get ethanol?
A
Beet rootB
OrangeC
GrapesD
SugarcaneClick an option to check your answer
Q. 39
Which of the following statements about diamond and graphite is true?
A
They have same degree of hardnessB
They have same electrical conductivityC
They have same chemical properties.D
They have same crystal structureClick an option to check your answer
Q. 40
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
A
Substitution reactionB
Addition reactionC
Oxidation reactionD
Displacement reactionClick an option to check your answer
Q. 41
Catenation is maximum in:
A
OxygenB
CarbonC
PhosphorousD
SulphurClick an option to check your answer
Q. 42
Methane is ______
A
Ionic compoundB
Saturated compoundC
nitrogen compoundD
Unsaturated compoundClick an option to check your answer
Q. 43
Which of the following puts the elements in the right order in terms of their valency, starting with the element of lowest valency?
A
H, O, N, CB
H, C, O, NC
C, O, N, HD
O, C, N, HClick an option to check your answer
Q. 44
Which of the following pairs exhibit isomerism?
A
Ethane and etheneB
Propane and butaneC
Ethane and propaneD
Butane and 2-methyl propaneClick an option to check your answer
Q. 45
In double covalent bond, there is sharing of:
A
2 electronsB
6 electronsC
3 electronsD
4 electronsClick an option to check your answer
Q. 46
Which of the following is correct about a diamond's structure?
A
Carbon atoms conduct electricity in the molten stateB
Electrons move freely through the structureC
Layers of atoms slide easily over each otherD
Carbon atoms are held together by single covalent bondsClick an option to check your answer
Q. 47
A functional group mainly determines the
A
None of theseB
Physical propertiesC
Chemical propertiesD
BothClick an option to check your answer
Q. 48
Which of the following is a crystalline form of carbon ?
A
GraphiteB
Lamp blackC
CoalD
CharcoalClick an option to check your answer
Q. 49
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
A
The fuel is wetB
The fuel is not burning completelyC
The fuel is burning completelyD
The food is not cooked completelyClick an option to check your answer
Q. 50
Which element is NOT typically bonded with carbon in organic compounds?
A
OxygenB
HydrogenC
NitrogenD
IronClick an option to check your answer
Q. 51
Rectified spirit is
A
80% ethanolB
95% ethanolC
40 to 50% ethanolD
50% ethanolClick an option to check your answer
Q. 52
The isomeric pair is
A
Propane and butaneB
Butane and 2-methylpropaneC
Ethane and propaneD
Ethane and ethaneClick an option to check your answer
Q. 53
The odour of acetic acid resembles that of:
A
KeroseneB
VinegarC
Lemon juiceD
TomatoClick an option to check your answer
Q. 54
Artificial flavour for orange is obtained from
A
octyl acetateB
amyl acetateC
isoamyl valerateD
methyl butyrateClick an option to check your answer
Q. 55
What is true about covalent compounds? They:
A
are mostly soluble in water.B
have high melting and boiling point.C
are formed by the sharing of electrons in the bonding atoms.D
are formed between atoms of metals and non metals.Click an option to check your answer
Q. 56
The molecular formula of ethane C₂H6 has:
A
6 covalent bonds.B
7 covalent bondsC
8 covalent bonds.D
9 covalent bonds.Click an option to check your answer
Q. 57
The odour of acetic acid resembles that of
A
Burning PlasticB
VinegarC
KeroseneD
RoseClick an option to check your answer
Q. 58
The nucleus of carbon holds bonds tightly due to:
A
Weak nuclear forcesB
Strong nuclear forcesC
Weak electromagnetic forcesD
Strong electromagnetic forcesClick an option to check your answer
Q. 59
Fullerenes are also known as:
A
Spherical carbonB
Cubic carbonC
Fibrous carbonD
Linear carbonClick an option to check your answer
Q. 60
Which of the following is not a characteristic of members of a homologous series?
A
Adjacent members differ by one carbon and two hydrogen atoms.B
They possess varying chemical properties.C
Their physical properties vary in regular and predictable manner.D
Their formulae fit the general molecular formula.Click an option to check your answer
Q. 61
A hydrocarbon should have minimum how many
carbon atoms to show isomerism?
A
FiveB
ThreeC
SixD
FourClick an option to check your answer
Q. 62
Sodium carbonate solution is added to dilute ethanoic acid) It is observed that :
A
The colour of the mixtureB
The mixture becomes warmC
A solid settles at the bottomD
A gas evolvesClick an option to check your answer
Q. 63
Carbon's ability to form diverse compounds makes it the basis of:
A
Organic chemistryB
Inorganic chemistryC
Analytical chemistryD
Physical chemistryClick an option to check your answer
Q. 64
2ml of acetic acid is added to 5ml of water and was shaken up for 1minute, it was noticed that:
A
A pink and clear solution is formedB
The acid formed a separate layer on the top of waterC
Water formed a separate layer on the top of the acidD
A clear and homogeneous solution is formedClick an option to check your answer
Q. 65
What property of carbon enables the formation of complex organic molecules?
A
CationizationB
IsomerismC
CatenationD
HybridizationClick an option to check your answer
Q. 66
The ability of carbon to bond with itself and other elements is known as:
A
CationizationB
AnionizationC
CatenationD
IonizationClick an option to check your answer
Q. 67
Which of the following does NOT contribute to carbon's ability to form large compounds?
A
TetravalencyB
CatenationC
Weak bonding capacityD
Strong nuclear forcesClick an option to check your answer
Q. 68
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
A
Substitution reactionB
Displacement reactionC
Oxidation reactionD
Addition reactionClick an option to check your answer
Q. 69
Methane reacts with one mole of Chlorine in presence of sunlight to give _________.
The reaction is called_______.
The reaction is called_______.
A
Tetra chloro methane, combustionB
Chloromethane, substitutionC
Dichloromethane, additionD
Trichloromethane, eliminationClick an option to check your answer
Q. 70
Carboxylic acid containing one carbon atom is
A
Acetic acidB
Formic acidC
VinegarD
Citric acidClick an option to check your answer
Q. 71
Graphite is good conductor of electricity due to the
A
presence van der waal forcesB
presence of hexagonal ringsC
presence of ionsD
presence of free electronClick an option to check your answer
Q. 72
Which type of compounds commonly exhibit structural isomerism?
A
Inorganic compoundsB
Metallic compoundsC
Carbon compoundsD
Ionic compoundsClick an option to check your answer
Q. 73
Structural isomerism is characterized by differences in the:
A
Molecular weightB
Arrangement of atomsC
Number of electronsD
Temperature sensitivityClick an option to check your answer
Q. 74
By how much atomic mass unit successive
members of a homologous series vary?
A
TwelveB
FourteenC
SixteenD
OneClick an option to check your answer
Q. 75
2ml of acetic acid is added to 5ml of water and was shaken up for 1minute, it was noticed that:
A
A clear and homogeneous solution is formedB
The acid formed a separate layer on the top of waterC
A pink and clear solution is formedD
Water formed a separate layer on the top of the acidClick an option to check your answer
Q. 76
Which is not correct for isomers of a compound?
A
They have same molecular formulaB
They have same structural formulaC
They differ in chemical propertiesD
They differ in physical propertiesClick an option to check your answer
Q. 77
The First Member Of Alkyne Homologous Series Is:
A
MethaneB
EthyneC
EtheneD
PropyneClick an option to check your answer
Q. 78
Which allotrope of carbon has a sheet-like structure?
A
DiamondB
GraphiteC
FullerenesD
Amorphous carbonClick an option to check your answer
Q. 79
The property of self-linkage among identical atoms to form long chain compounds is known as:
A
HalogenationB
CatenationC
IsomerisationD
SuperpositionClick an option to check your answer
Q. 80
Hydrocarbons are mainly composed of:
A
Hydrogen and carbonB
HydrogenC
Hydrogen, oxygen and carbonD
Hydrogen, carbon and nitrogenClick an option to check your answer
Q. 81
Ionic compounds have does not show below property.
A
High boiling pointB
Conduction of electricity in solid stateC
Conduction of electricity in molten stateD
High melting pointClick an option to check your answer
Q. 82
What property of graphite makes it suitable as a lubricant?
A
High densityB
HardnessC
Sliding layersD
TransparencyClick an option to check your answer
Q. 83
What is the minimum number of carbon atoms required in an organic compound to form a branch?
A
3B
2C
5D
4Click an option to check your answer
Q. 84
Which of the following molecules has all its atoms joined together by double covalent bonds?
A
Carbon dioxideB
Nitrogen trichlorideC
WaterD
MethaneClick an option to check your answer
Q. 85
Carbon exists in the atmosphere in the form of:
A
carbon dioxide onlyB
carbon monoxide onlyC
carbon monoxide in traces and carbon dioxideD
coalClick an option to check your answer
Q. 86
Which of the following statements is not correct?
A
Two consecutive members of a homologous series differ by a –CH3 group.B
The members of a homologous series can be represented by one general formula.C
Different members of a homologous series have similar chemical properties.D
A common functional group is present in different members of a homologous series.Click an option to check your answer
Q. 87
Which of the given can be used for the denaturation of ethyl alcohol?
A
Copper sulphateB
Methyl alcoholC
PyridinesD
All of theseClick an option to check your answer
Q. 88
Catenation is maximum in:
A
OxygenB
SulphurC
CarbonD
PhosphorousClick an option to check your answer
Q. 89
Carboxylic acid containing one carbon atom is
A
VinegarB
Citric acidC
Acetic acidD
Formic acidClick an option to check your answer
Q. 90
The odour of acetic acid resembles that of:
A
TomatoB
KeroseneC
VinegarD
Lemon juiceClick an option to check your answer
Q. 91
Sodium carbonate solution is added to dilute ethanoic acid) It is observed that :
A
A solid settles at the bottomB
The mixture becomes warmC
A gas evolvesD
The colour of the mixtureClick an option to check your answer
Q. 92
A molecule of ammonia (NH₃) has
A
Two double bonds and one single bondB
Only single bondsC
Only double bondsD
Only triple bondsClick an option to check your answer
Q. 93
Compounds with _______ molecular formula with different structures called _______
A
Same, monomeric structuresB
Different, monomeric structuresC
Same, structural isomerismD
Different, structural isomerismClick an option to check your answer
Q. 94
Atomic number of Cl.
A
12B
16C
18D
17Click an option to check your answer
Q. 95
Butanone is a four carbon compound with functional group:
A
ketoneB
carboxylic acidC
aldehydeD
alcoholClick an option to check your answer
Q. 96
Which of the following statements is correct about a substance that has a giant covalent structure?
A
It conducts electricity in the molten state.B
All its ions are arranged in a giant three dimensional lattice.C
It dissolves in water but is more soluble in organic solvents.D
A large amount of energy is needed to break down the lattice structure.Click an option to check your answer
Q. 97
How many number of carbon atoms are joined in
a spherical molecule of Buckminsterfullerene?
A
90B
30C
120D
60Click an option to check your answer
Q. 98
Which of the following is not an allotropic form
of carbon?
A
DiamondB
FluorineC
GraphiteD
FullereneClick an option to check your answer
Q. 99
What is the color of graphite?
A
TransparentB
Greyish blackC
WhiteD
BlueClick an option to check your answer
Q. 100
Sodium carbonate solution is added to dilute ethanoic aci It is observed that :
A
A solid settles at the bottomB
The mixture becomes warmC
The colour of the mixtureD
A gas evolvesClick an option to check your answer
Q. 101
Which of the following exists as a simple triatomic molecule?
A
FluorineB
ArgonC
NitrogenD
OzoneClick an option to check your answer
Q. 102
The allotrope of carbon which is a good conductor
of heat and electricity is:
A
GraphiteB
CharcoalC
None of theseD
DiamondClick an option to check your answer
Q. 103
Organic compounds will always contains
A
hydrogenB
nitrogenC
sulphurD
carbonClick an option to check your answer
Q. 104
Which one of the given is an unsaturated hydrocarbon?
A
ButaneB
PropaneC
DecaneD
AcetyleneClick an option to check your answer
Q. 105
Functional group – CHO is present in which of the following?
A
AldehydeB
KetoneC
Carboxylic acidD
AlcoholClick an option to check your answer
Q. 106
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
A
the fuel is not burning completely.B
the fuel is wet.C
the fuel is burning completely.D
the food is not cooked completely.Click an option to check your answer
Q. 107
The property of self-linkage among identical
atoms to form long chain compounds is known as:
A
SuperpositionB
HalogenationC
IsomerisationD
CatenationClick an option to check your answer
Q. 108
A functional group mainly determines the
A
None of theseB
Chemical propertiesC
Physical propertiesD
BothClick an option to check your answer
Q. 109
Cooking oils contain _____
A
Saturated acidsB
Unsaturated healthy acidsC
Unsaturated fatty acidsD
Saturated healthy acidsClick an option to check your answer
Q. 110
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
A
OxidationB
SubstitutionC
AdditionD
DisplacementClick an option to check your answer
Q. 111
100% pure ethanol is called
A
Denatured alcoholB
Power alcoholC
Rectified spiritD
Absolute alcoholClick an option to check your answer
Q. 112
The organic compounds having functional group are known as:
A
AlcoholB
Carboxylic acidsC
KetoneD
AldehydeClick an option to check your answer
Q. 113
The first member of the alkyne homologous series
is:
A
etheneB
methaneC
ethyneD
propyneClick an option to check your answer
Q. 114
Three carbon chain with ketone functional group would name in following .
A
PropanoateB
PropanolC
ButanoateD
ButanolClick an option to check your answer
Q. 115
Buckminster fullerene is an allotropic form of:
A
SulphurB
TinC
CarbonD
PhosphorusClick an option to check your answer
Q. 116
Oils On Treating With Hydrogen In The Presence Of Palladium Or Nickel Catalyst Form Fats. This Is An Example Of:
A
Oxidation reactionB
Displacement reactionC
Addition reactionD
Substitution reactionClick an option to check your answer
Q. 117
Subsequent members of homologous series differ by how many atomic mass units?
A
14B
24C
28D
16Click an option to check your answer
Q. 118
Ethanol on oxidation gives
A
Ethanoic acidB
EthaneC
MethaneD
FormalinClick an option to check your answer
Q. 119
What is the phenomenon called when compounds have the same molecular formula but differ in physical or chemical properties?
A
PolymerizationB
AllotropyC
IsomerismD
CatenationClick an option to check your answer
Q. 120
Which of the given is a noble gas?
A
HydrogenB
ArgonC
CarbonD
NitrogenClick an option to check your answer
Q. 121
Which of the following compounds has the longest carbon chain?
A
Iso-pentaneB
2-methylpentaneC
2,2-dimethylbutaneD
NeopentaneClick an option to check your answer
Q. 122
Graphite is lighter than diamond due to its:
A
Lower densityB
Higher densityC
Similar densityD
Variable densityClick an option to check your answer
Q. 123
Diamond is primarily used for:
A
Electrical insulationB
LubricationC
Cutting hard materialsD
Carbon storageClick an option to check your answer
Q. 124
The term 'Isomerism' applies to organic compounds with same:
A
structural formulae but different molecular formula.B
empirical formula but different molecular formulae.C
molecular formula but different structural formulae.D
molecular formula but different empirical formulae.Click an option to check your answer
Q. 125
The number of carbon atoms surrounding each carbon atom in a diamond are:
A
2B
3C
5D
4Click an option to check your answer
Q. 126
Organic compounds are generally
A
soluble in waterB
covalent in natureC
ionic in natureD
insoluble in organic solventsClick an option to check your answer
Q. 127
Carbon forms covalent bonds with:
A
Ionic characterB
Metallic characterC
Polar characterD
Strong sharing of electronsClick an option to check your answer
Q. 128
How many electrons are there in the outermost
shell of carbon?
A
4B
3C
2D
1Click an option to check your answer
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