Organic Chemistry Test

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Organic Chemistry Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

The function of adding calcium oxide in the preparation of methane from sodium acetate is

A
to prevent the deliquency of caustic soda

B
to speed up the reaction

C
to undergo chemical reaction with sodium acetate

D
all of these

Solution

The function of adding calcium oxide in the preparation of methane from sodium acetate is to prevent the deliquency of caustic soda.
Question 2
1 / -0

Which of the following is a saturated compound?

A
C₃H₈

B
C₄H₈

C
C₃H₆

D
C₅H₈

Solution

A saturated compound is a chemical compound that has a chain of carbon atoms linked together by single bonds. Thus, from the above given compounds, C₃H₈ contains only single bonds between the elements.
Question 3
1 / -0

How many hydrogen atoms are there in a compound of octane?

A
8

B
16

C
14

D
18

Solution

Octane has 8 carbon atoms and it is an alkane.
Thus, the number of hydrogen atoms is 2 x 8 + 2 = 18
Question 4
1 / -0

Which of the following is a correct homologous series of compounds?

A
CH₄, C₂H₆, C₄H₁₀, C₈H₁₈

B
CH₄, C₂H₆, C₃H₈, C₄H₁₀

C
CH₄, C₂H₆, C₄H₁₀, C₆H₁₄

D
CH₄, C₃H₈, C₆H₁₄, C₉H₂₀

Solution

Correct homologous series of compounds: CH₄, C₂H₆, C₃H₈, C₄H₁₀
Question 5
1 / -0

Which of the following correctly represents the compound Bromopentane?

A
H₃C – CH₂ – CH₂ = CH₂CHBr

B
H₃C – CH₂ – CH = CH – CH₂Br

C
H₃C – CH₂ – CH₂ – CH₂ – CH₂Br

D
H₃C – CH₂ – CH₂ – CH₂ – CHBr

Solution

H₃C – CH₂ – CH₂ – CH₂ – CH₂Br is bromopentane.
Question 6
1 / -0

What is the maximum number of isomers pentane (C₅H₁₂) can have?

A
4

B
3

C
2

D
6

Solution

The maximum number of isomers that pentane (C₅H₁₂) can have is three.
Question 7
1 / -0

Isomer of dimethyl ether is

A
methanol

B
ethanol

C
diethyl ether

D
ethane

Solution

Ethanol is the isomer of dimethyl ether.
Question 8
1 / -0

The name of the compound CH₃ CH₂ CH₂OH is

A
methyl alcohol

B
n-propyl alcohol

C
ethanoic acid

D
ethanol

Solution

The name of the compound CH₃ CH₂ CH₂OH is n-propyl alcohol.
Question 9
1 / -0

Which of the following is produced on heating ethyl alcohol with alumina at 350^oC?

A
Ethanal

B
Diethyl ether

C
Ethene

D
Ethyne

Solution

Ethyl alcohol heated at 350^oC in the presence of alumina catalyst undergoes dehydration to produce ethene (ethylene).
Question 10
1 / -0

Acetic acid reacts with PCl₅ or SOCl₂ to give

A
acetyl chloride

B
dichloro acetic acid

C
methyl chloride

D
ethanol

Solution

Acetic acid reacts with PCl₅ or SOCl₂ to give acetyl chloride.

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Organic Chemistry Test - 3

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Organic Chemistry Test - 3

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Question 1

to prevent the deliquency of caustic soda

to speed up the reaction

to undergo chemical reaction with sodium acetate

all of these

Solution

Question 2

C3H8

C4H8

C3H6

C5H8

Solution

Question 3

8

16

14

18

Solution

Question 4

CH4, C2H6, C4H10, C8H18

CH4, C2H6, C3H8, C4H10

CH4, C2H6, C4H10, C6H14

CH4, C3H8, C6H14, C9H20

Solution

Question 5

H3C – CH2 – CH2 = CH2CHBr

H3C – CH2 – CH = CH – CH2Br

H3C – CH2 – CH2 – CH2 – CH2Br

H3C – CH2 – CH2 – CH2 – CHBr

Solution

Question 6

4

3

2

6

Solution

Question 7

methanol

ethanol

diethyl ether

ethane

Solution

Question 8

methyl alcohol

n-propyl alcohol

ethanoic acid

ethanol

Solution

Question 9

Ethanal

Diethyl ether

Ethene

Ethyne

Solution

Question 10

acetyl chloride

dichloro acetic acid

methyl chloride

ethanol

Solution

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C₃H₈

C₄H₈

C₃H₆

C₅H₈

CH₄, C₂H₆, C₄H₁₀, C₈H₁₈

CH₄, C₂H₆, C₃H₈, C₄H₁₀

CH₄, C₂H₆, C₄H₁₀, C₆H₁₄

CH₄, C₃H₈, C₆H₁₄, C₉H₂₀

H₃C – CH₂ – CH₂ = CH₂CHBr

H₃C – CH₂ – CH = CH – CH₂Br

H₃C – CH₂ – CH₂ – CH₂ – CH₂Br

H₃C – CH₂ – CH₂ – CH₂ – CHBr