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If you are looking for Chemistry Notes for Class 10 Chapter-12 then you are on right place, and have found the your required Notes for Chemistry. on this post you can find the all type Notes & Solution for chemistry class 10 problems. so read this post and take benefits for your studies and share with your Friends.

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Chemistry Ch#12, 10th Class

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1 / 96

Traces of acetylene are present in coal gas about ___________

0.06%

0.09%

0.07%

0.08%

2 / 96

Which is present 85% in natural gas?

Methane

Ethane

Propane

Butane

3 / 96

A hydrocarbon has molecular formula C₈H₁₄. What is the molecular formula of the next member of the same homologous series.

C₉H₁₈
C₉H₁₆
C₉H₂₀
C₉H₁₂

Which Option is Correct?

Option-4

Option-2

Option-1

Option-3

4 / 96

Due to which property alkane are used as fuel___________

Oxidation

Halogenation

Reduction

Combustion

5 / 96

Alkanes give reaction only _____

Addition

Substitution

Decomposition

Displacement

6 / 96

The compound having at least one benzene ring are called________

Alkyne

Alkene

Aromatics

Alkane

7 / 96

Dehydration means removal of__________

All of these

Hydrogen

Halogen

Water

8 / 96

paraffins means________

Less Reactive

None of these

Oil Forming

Highly Reactive

9 / 96

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X.

C₃H₈
C₆H₁₂
C₄H₁₀
C₇H₁₆

Which Option is Correct?

Option-1

Option-3

Option-4

Option-2

10 / 96

Alkenes are produced in large amounts by cracking of_________

Xylol

Natural Gas

Petroleum

Benzene

11 / 96

Carbon black is used in the manufacture of_______

Fertilizers

Dry Cleaning

Shoe Polishes

None of These

12 / 96

Amorphous forms of carbons are______

Carbon Black

Charcoal

Coal

All of these

13 / 96

The reduction of alkyl halides takes place in the presence of___________

Mg / HCl

Cu / HCl

Zn / HCl

Na / HCl

14 / 96

Alkyne forms____________

Single bond

Triple bond

Ionic bond

Double bond

15 / 96

Which of the following has higher energy?

All of these

Alkyne

Alkane

Alkene

16 / 96

Alcohol is soluble in water due to ________

Covalent bonding

All of these

Lone pair of water

Hydrogen bonding

17 / 96

Due to increase in molar mass which property increases?

Volatility

M.P

Both B.P & M.P

B.P

18 / 96

Substitution reaction is the characteristics of__________

None of These

Alkanes

Alkenes

Alkynes

19 / 96

Which of the following is not a hydrocarbon?

Methane (CH₄)
Ethane(C₂H₆)
Water (H₂O)
Ethyne (C₂H₂)

Which Option is Correct ?

Option-3

Option-4

Option-1

Option-2

20 / 96

Carbon has valency_______

21 / 96

Dehydration of alcohols can be carried out with______

NaOH
KOH
H₂SO₄
HCl

Which Option is Correct ?

Option-3

Option-1

Option-4

Option-2

22 / 96

Which of the following gas is used in warfare?

Methane

Ethane Gas

Mustard Gas

None of These

23 / 96

Some orchids attract bees for pollination by producing_________

Alkenes

Alkynes

All of these

Alkanes

24 / 96

The formula of oxalic acid is___________

(COOH)₂
HCOOH
CH₃COOH
COOH

Select Correct Option

Option-3

Option-2

Option-4

Option-1

25 / 96

Which one of the following is a substitution reaction?

Halogenations of Alkenes

Halogenations of Alkynes

Halogenations of Alkanes

Bromination of Alkenes

26 / 96

Incomplete combustion of alkanes produces________

Carbon Monoxide Only

Carbon Monoxide Carbon Black & Water

Carbon Dioxide Only

Carbon Dioxide and Carbon Black

27 / 96

Alkanes are least reactive compounds because they are____________

Unsaturated Hydrocarbons

None of these

Both Saturated & Unsaturated Hydrocarbons

Saturated Hydrocarbons

28 / 96

Alkynes being more reactive than __________

Alkenes

Both Alkanes & Alkenes

None of these

Alkanes

29 / 96

Carbon tetra chloride is used in_______

Fertilizers

Dry Cleaning

Metallurgy

Anesthesia

30 / 96

Which one of the following is more reactive?

Ethene

Acetylene

Methane

Ethane

31 / 96

Di-methy acetylene is also called___________

Ethyne

Hexayne

Propyne

Butyne

32 / 96

The Hydrocarbons having double bond are called _________

Alkene

Alkyl

Alkane

Alkyne

33 / 96

Halogenation of alkanes in the presence of diffused sunlight takes place ________

Suddenly, only in one step

In a series of step

Slowly in one step

Fastly in two steps

34 / 96

In shoe polishes, which chemical is used?

Methanol

Formaldehyde

Carbon Black

Ethanol

35 / 96

Molecular formula of butyne is_____________

C₄H₆
C₃H₄
C₄H₇
C₄H₈

Which Option is Correct ?

Option-4

Option-1

Option-2

Option-3

36 / 96

Oxidation of ethene with KMnO₄ produces______

Propene Glycol

Glyoxal

Ethene

Oxalic Acid

37 / 96

Which of the following does not occur free in nature?

Propylene

Ethylene

Pentene

Acetylene

38 / 96

Which gas creates suffocation and causes death?

CO
CO₂
SO₃
SO₂

Which Option is Correct ?

Option-3

Option-2

Option-1

Option-4

39 / 96

Methane forms natural gas about___________

87%

85%

86%

84%

40 / 96

Alkanes do not react in__________

Bright Sunlight

Dark

Diffused Sunlight

None of These

41 / 96

Dehydrohalogenation takes place in the presence of_____________

NaOH aqueous

aqueous KOH

alcoholic KOH

alcoholic NaOH

42 / 96

Number of bonds present in methane________

43 / 96

The alkanes consisting of C₅ to C₁₀ are__________

Plasma

Gases

Liquids

Solids

44 / 96

Detergents are the sodium salts of__________

Sodium Carbonate

Alkyl Hydrogen Sulphite

Cholesteryl Benzoate

Sulphuric Acid

45 / 96

Which one of the following is a substitution reaction?

Dehydration of Alkane

Hydrolysis of Alkane

Halogenation of Alkane

Hydrogenation

46 / 96

Which of the following property is not present in hydrocarbons?

High Melting Point

Solubility in non-polar solvent

Poor conductivity

Non-polar property

47 / 96

Which of the following is not an example of open chain hydrocarbon?

CH₄
C₃H₈
C₂H₆
C₆H₆

Select Correct Option

Option-2

Option-4

Option-1

Option-3

48 / 96

Glyoxal is oxidize into_________

KMnO4

Acetic Acid

Oxalic Acid

Glycol

49 / 96

Which compound is used for welding process?

Ethylene

Acetylene

KMnO4

CH4

50 / 96

Benzene is formed by the polymerization of_______________

Alkene

Acetylene

Alkane

All of these

51 / 96

Number of bonds in propene is ______________

52 / 96

Which of the following is not alcohol?

C₂H₅OH
C₃H₇OH
CH₃OH
Ca(OH)₂

Select Correct Option

Option-3

Option-1

Option-4

Option-2

53 / 96

Ethylene is present in natural gas sometimes to the extent of________

20%

30%

40%

10%

54 / 96

The molecular formulae of the first three members of the alkane hydrocarbons are CH₄, C₂H₆ and C₃H₈. What is the molecular formula for the eighth alkane member, octane, which is found in petrol?

C₈H₈
C₈H₁₆
C₈H₁₈
C₈H₂₀

Which Option is Correct ?

Option-4

Option-3

Option-2

Option-1

55 / 96

Traces of acetylene are present in coal gas about_________

0.06%

0.08%

90%

1.1%

56 / 96

Methane is also called ______

Both Marsh & Natural Gas

Inert Gas

Natural Gas

Marsh Gas

57 / 96

Addition of hydrogen is called _________

Reduction

All of these

Redox

Oxidation

58 / 96

Which of the following is a synthetic fiber?

Polyesters

All of these

Rayon

Nylon

59 / 96

Alkanes having carbon range in liquid like ______

C₄ to C₆
C₇ to C₁₀
C₈ to C₁₀
Both C₄ to C₆ & C₇ to C₁₀

Select Correct Option

Option-2

Option-4

Option-1

Option-3

60 / 96

Which one of these is a saturated hydrocarbon?

C₂H₄
C₃H₆
C₄H₈
C₅H₁₂

Which Option is Correct?

Option-1

Option-2

Option-3

Option-4

61 / 96

Alkenes are prepared from alcohols by a process called_________

Dehydrohalogenation

Dehalogenation

Dehydration

Dehydrogenation

62 / 96

Dehalogenation of tetrahalides produces acetylene. This reaction takes place in the presence of___

Sodium Metal

Potassium Metal

Zinc Metal

Magnesium Metal

63 / 96

If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one_________

It will be Least Reactive

Its Name will be N-Butane

It will have 8 Hydrogen Atoms

It will be Saturated Hydrocarbon

64 / 96

Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine?

CH₄
C₁₀H₂₀
C₂H₄
C₂H₂

(Which Option is Correct)

Option-1

Option-3

Option-4

Option-2

65 / 96

What is the most necessary condition for the reaction of CH₄ with halogen?

Sunlight

High temperature

Pressure

Catalyst

66 / 96

Formula of nascent hydrogen is_______

All of these

[H]

67 / 96

Chloroform is used for__________

Ink

Anesthesia

Toys

Fever

68 / 96

A solution of bromine in water having colour________

Dark brown

Voilet

Purple

Red – brown

69 / 96

Banana when ripped produces gas________

Noble Gas

Oxygen Gas

Methane

Ethene

70 / 96

Alkenes are insoluble in___________

Alcohol

Water (H2O)

Both Alcohol & Water

Organic solvent

71 / 96

Banaspati Ghee is also called______

Coconut Oil

Cooking Oil

Vegetable Oil

Margarine

72 / 96

The example of rubbers is ________

Butadiene

Chloroprene

Neoprene

Furan

73 / 96

Oxidation of alkenes produce______

Oxalic Acid

Glyoxal

Formic Acid

Glycol

74 / 96

The general formula of alkynes is_________

C_nH_2n
C_nH_2n+2
C_nH_2n-2
C_nH_2n+1

Which Option is Correct ?

Option-3

Option-2

Option-1

Option-4

75 / 96

Those Hydrocarbons having high molecular mass are___________

Liquid

Gases

Solids

All of these

76 / 96

In dry cleaning, which chemical is used?

Carbon Tetrachloride

Acetaldehyde

Ethanol

Chloroform

77 / 96

Chemical formula of chloroform is________

CH₂Cl₂
CH₃Cl
CHCl₃
CCl₄

Which Option is Correct ?

Option-4

Option-2

Option-3

Option-1

78 / 96

Which of the following is not a function of chloroform?

Dry Cleaning

Solvent in Waxes

Anesthesia

Solvent in Rubber

79 / 96

Ethylene oxide is used as _________

Solvent

Anti-freezer

Poisonous Mustard Gas

Fumigant

80 / 96

Halogenation of methane produces following valuable chemical compounds used as solvents except_______

Carbon Black

Chloromethane

Carbon Tetrachloride

Chloroform

81 / 96

The end product of oxidation of acetylene is_______

Glycol

None of these

Oxalic Acid

Glyoxal

82 / 96

Which is the characteristics property of alkanes?

Redox Reaction

Double Displacement Reaction

Substitution Reaction

Displacement Reactions

83 / 96

Condensed formula of ethane is________

C₃H₈
C₂H₆
H₃CCH₃
None of These

Which Option is Correct ?

Option-4

Option-2

Option-1

Option-3

84 / 96

Which one is the formula of chloromethane?

CH₂Cl₂
CCl₄
CHCl₃
CH₃Cl

Which Option is Correct ?

Option-1

Option-4

Option-2

Option-3

85 / 96

Dehydrohalogenation of alkyl halides take place in the presence of __________

Alcoholic NaCl

Aqueous NaCl

Aqueous KOH

Alcoholic KOH

86 / 96

The order of reactivity of hydrogen halides with alkenes is__________

HI > HBr

HCl > HBr

HBr < HCl

HBr > HI

87 / 96

Alkenes is also called ______

All of these

Paraffins

Olefins

Acetylenes

88 / 96

Ethene reacts with H₂SO₄ at temperature of_________

16°C

453 K

180°C

150°C

89 / 96

Hydrogenation of alkenes and alkynes takes place at room temperature in the presence of_____

Both Ni & Pt

90 / 96

Alkanes are also called ________

Acetaldehyde

Acetylenes

Olefins

Paraffins

91 / 96

Incomplete combustion of alkanes produces __________

Carbon dioxide

Carbon monoxide

Oxygen

Chlorine gas

92 / 96

Which is the simplest alkane?

CH₄
C₃H₈
C₂H₂
C₂H₄

Which Option is Correct ?

Option-3

Option-2

Option-4

Option-1

93 / 96

The density of alkane increases with the increase of _________

M.P

Bonds

B.P

Molecular Size

94 / 96

The formula of methane _______

CH₃
CH₄
CH₂
C₂H₅

Select Correct Option

Option-3

Option-1

Option-4

Option-2

95 / 96

Which of the following is not an organic solvent?

C₂H₅OH
CHCl₃
CCl₄
H₂O

Select Correct Option

Option-1

Option-2

Option-3

Option-4

96 / 96

Which is used as Anti-freezer?

Di-ethyl ether

Ethylene oxide

Ethylene glycol

Ethyl alcohol

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