Organic Chemistry Test

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Organic Chemistry Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following reactions can be used for preparing oxalic acid form ethyne?

A
Reaction of ethyne with oxygen

B
Reaction of ethyne with potassium permanganate

C
Reaction of ethyne with hydrogen

D
Reaction of ethyne with chlorine

E
Reaction of ethyne with bromine
Question 2
1 / -0

Which of the following statements is correct about organic compounds?

A
Organic compounds dissolve in water.

B
Organic compounds have high melting and boiling points.

C
Organic compounds do not burn easily.

D
Organic compounds dissolve in organic solvents.

E
Organic compounds form ionic bonds only.
Question 3
1 / -0

Vapours of which of the following substances is passed through a tube containing alumina (Al₂O₃) at 300°C?

A
C₂H₅OH

B
CH₃ - CH₃

C
C₂H₅Br

D
CH₂ = CH₂

E
CH₃CHO
Question 4
1 / -0

Which of the following is not a characteristic of homologous series?

A
Each successive member of the series differs by addition of CH₂ group.

B
All members of a homologous series share a general formula.

C
Physical properties of the members change as the number of C-atoms per molecule increases.

D
The melting point, boiling point and density of homologous series decrease with increase in molecular mass.

E
The chemical properties show similarity.
Question 5
1 / -0

Which of the following statements is not correct about the unique nature of carbon atoms?

A
Carbon can neither lose nor gain electrons to attain an octet.

B
It always forms covalent bonds by sharing four electrons.

C
Carbon can combine with other carbon atoms with great strength.

D
Carbon forms single bonds only.

E
Carbon-carbon chains seem to be very long.
Question 6
1 / -0

Due to the formation of which of the following compounds does the reddish-brown colour of bromine water disappear when it is added dropwise to ethene?

A
Ethylene chloride

B
Ethylene bromide

C
Ethylene iodide

D
Ethyl chloride

E
Ethylene glycol
Question 7
1 / -0

What is the missing reagent in the following reaction?
CH₄ + O₂ HCHO + H₂O

A
Cu tubes

B
K₂Cr₂O₇

C
MbO

D
Pb metal

E
Dry ether
Question 8
1 / -0

Which of the following substances is obtained when ethene is treated with hydrogen at 200°C in the presence of nickel?

A
Ethane

B
Methane

C
Ethyne

D
Propene

E
Propyne
Question 9
1 / -0

Complete the following reaction:
? + 2Na H₃C - CH₃ + ?

A
2CH₃I, 2NaI

B
2C₂H₅F, 2NaI

C
CH₃I, Na

D
C₂H₅I, Na

E
None of these
Question 10
1 / -0

Which of the following compounds does not belong to the homologous series of alkanes?

A
CH₄

B
C₂H₆

C
C₃H₈

D
C₄H₈

E
C₅H₁₂
Question 11
1 / -0

What are the conditions, reagent used and the product obtained in case of catalytic oxidation of methane?

A
475 K, Cu tube, CH₃OH

B
200 K, Pb, CH₃ – O – CH₃

C
150 K, Cu Metal, C₂H₆

D
100 K, Fe tube, C₂H₆

E
250 K, Ag, C₆H₆
Question 12
1 / -0

Which of the following is not a characteristic of reaction of ethane with oxygen?

A
Bluish non sooty flame is produced

B
Carbon dioxide and water vapours are formed

C
Large amount of heat is absorbed

D
Ethane gets fully oxidized

E
None of these
Question 13
1 / -0

Consider the following reactions.
CH₃CH₂OH + a CH₃CH₂HSO₄ + H₂O
CH₃CH₂HSO₄ CH₂ = CH₂ + H₂SO₄
What can a, b and c be in the above reaction?

A
a - H₂SO₄, b - HCl, c - 160°C

B
a - H₂SO₄, b - excess H₂SO₄, c - 160°C

C
a - H₂SO₄, b - excess HCl, C - 100°C

D
a - H₂SO₄, b - HNO₃, c - 200°C

E
a - HCl, b - HNO₃, c - 200°C
Question 14
1 / -0

Which of the following is not a method of preparation of alkenes?

A
Cracking of ethane

B
Dehydrohalogenation of ethyl bromide

C
Reaction of KOH with alcoholic C₂H₅l

D
Reaction of methyl iodide with sodium in dry ether

E
Reaction of ethylene dibromide with zinc
Question 15
1 / -0

What is the product of oxidation of ethyne?

A
Carbon dioxide + water + heat

B
Carbon monoxide + water

C
Ethane + water + heat

D
Ethene + water + heat

E
None of these
Question 16
1 / -0

What is the IUPAC name of the following compound?

A
Dimethylbutane

B
2, 3 – Dimethylbutane

C
1, 2 – Dimethylbutane

D
2, 2 – Dimethylbutane

E
1, 4 – Dimethylbutane
Question 17
1 / -0

Which of the following reactions is likely to yield carbon tetrachloride as a product?

A
Excess of methane is treated with chlorine.

B
Methane is treated with excess of chlorine.

C
Ethane is treated with excess of chlorine.

D
Excess of ethane is treated with chlorine.

E
Excess of chloro ethane is treated with chlorine.
Question 18
1 / -0

Which of the following reactions represents a cracking process?

A
CH₄ + 2O₂ CO₂ + 2H₂O

B
C₂H₆ + Cl₂ C₂H₅Cl + HCl

C
C₂H₆ C₂H₄ + H₂

D
CH₄ + Cl₂ CH₃Cl + HCl

E
CH₂ = CH₂ + H₂ H₃C + CH₃
Question 19
1 / -0

Which of the following correctly represents the reagent and temperature needed for the preparation of ethane from sodium propionate?

A
NaH₂, 400°C

B
CaO, 300°C

C
CuO, 600°C

D
Pb, 200°C

E
FeS, 150
Question 20
1 / -0

Fill the missing term in the following reaction.
? + 2H₂O Ca (OH)₂ + ?

A
CaC₂, C₂H₂

B
CaO, C₂H₂

C
Ca(OH)₂, CH₄

D
CaCl₂, C₂H₆

E
CaH₂, C₂H₆

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Organic Chemistry Test - 4

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Question 1

Reaction of ethyne with oxygen

Reaction of ethyne with potassium permanganate

Reaction of ethyne with hydrogen

Reaction of ethyne with chlorine

Reaction of ethyne with bromine

Question 2

Organic compounds dissolve in water.

Organic compounds have high melting and boiling points.

Organic compounds do not burn easily.

Organic compounds dissolve in organic solvents.

Organic compounds form ionic bonds only.

Question 3

C2H5OH

CH3 - CH3

C2H5Br

CH2 = CH2

CH3CHO

Question 4

Each successive member of the series differs by addition of CH2 group.

All members of a homologous series share a general formula.

Physical properties of the members change as the number of C-atoms per molecule increases.

The melting point, boiling point and density of homologous series decrease with increase in molecular mass.

The chemical properties show similarity.

Question 5

Carbon can neither lose nor gain electrons to attain an octet.

It always forms covalent bonds by sharing four electrons.

Carbon can combine with other carbon atoms with great strength.

Carbon forms single bonds only.

Carbon-carbon chains seem to be very long.

Question 6

Ethylene chloride

Ethylene bromide

Ethylene iodide

Ethyl chloride

Ethylene glycol

Question 7

Cu tubes

K2Cr2O7

MbO

Pb metal

Dry ether

Question 8

Ethane

Methane

Ethyne

Propene

Propyne

Question 9

2CH3I, 2NaI

2C2H5F, 2NaI

CH3I, Na

C2H5I, Na

None of these

Question 10

CH4

C2H6

C3H8

C4H8

C5H12

Question 11

475 K, Cu tube, CH3OH

200 K, Pb, CH3 – O – CH3

150 K, Cu Metal, C2H6

100 K, Fe tube, C2H6

250 K, Ag, C6H6

Question 12

Bluish non sooty flame is produced

Carbon dioxide and water vapours are formed

Large amount of heat is absorbed

Ethane gets fully oxidized

None of these

C₂H₅OH

CH₃ - CH₃

C₂H₅Br

CH₂ = CH₂

CH₃CHO

Each successive member of the series differs by addition of CH₂ group.

K₂Cr₂O₇

2CH₃I, 2NaI

2C₂H₅F, 2NaI

CH₃I, Na

C₂H₅I, Na

CH₄

C₂H₆

C₃H₈

C₄H₈

C₅H₁₂

475 K, Cu tube, CH₃OH

200 K, Pb, CH₃ – O – CH₃

150 K, Cu Metal, C₂H₆

100 K, Fe tube, C₂H₆

250 K, Ag, C₆H₆

a - H₂SO₄, b - HCl, c - 160°C

a - H₂SO₄, b - excess H₂SO₄, c - 160°C

a - H₂SO₄, b - excess HCl, C - 100°C

a - H₂SO₄, b - HNO₃, c - 200°C

a - HCl, b - HNO₃, c - 200°C

Reaction of KOH with alcoholic C₂H₅l

CH₄ + 2O₂ CO₂ + 2H₂O

C₂H₆ + Cl₂ C₂H₅Cl + HCl

C₂H₆ C₂H₄ + H₂

CH₄ + Cl₂ CH₃Cl + HCl

CH₂ = CH₂ + H₂ H₃C + CH₃

NaH₂, 400°C

CaC₂, C₂H₂

CaO, C₂H₂

Ca(OH)₂, CH₄

CaCl₂, C₂H₆

CaH₂, C₂H₆