Hydrocarbons Test

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Hydrocarbons Test - 22

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following compounds will react with methyl magnesium bromide?

A
CH₃ CH₂CH₂ CH₂ CH₃

B
CH₃CH= CH —CH=CH₂

C
CH₃ —C≡ C—CH₂CH₃

D
CH₃CH₂CH₂C≡ CH

Solution
Question 2
4 / -1

Ammoniacal cuprous chloride will give red precipitate with which one of the following ?

A
CH₃ —C≡C—CH₃

B
CH₃ — CH=CH₂

C
CH₃ —C≡CH

D
CH₃ —CH=CH—CH₃
Question 3
4 / -1

Which one of the following gives, on ozonolysis, both aldehydes and ketones ?

A
Me₂ C=CHMe

B
Me₂C=CMe₂

C
MeCH₂—C(Me) =CMe₂

D
MeCH(Me)—CH=CHMe
Question 4
4 / -1

A compound X on ozonolysis followed by reduction gives an aldehyde C₂H₄O and 2-butanone. Compound X is

A
3-methyl pentene-2

B
3-methyl pentene-3

C
3-methyl hexene-3

D
3-ethyl pentene-3
Question 5
4 / -1

Select the reagent for the following reaction,

A
SeO₂

B
O₃, Zn / H₂O

C
O₃, H₂O₂—CH₃ COOH

D
PCC

Solution
Question 6
4 / -1

An alkyne combines with a conjugated diene to give an unconjugated cycloalkadiene. The most likely title of this reaction is

A
Schotten-Baumann reaction

B
Hofmann-bromamide reaction

C
Pinacol-Pinacolone rearrangement

D
Diels-Alder reaction
Question 7
4 / -1

A hydrocarbon of molecular formula C₆ H₁₀ reacts with sodamide and the same on ozonolysis followed by hydrogen peroxide oxidation gives two molecules of carboxylic acids, one being optically active. Then, the hydrocarbon may be

A
1-hexyne

B
3-hexyne

C
3-methyl-1-pentyne

D
3,3-dimethyl-l-butyne
Question 8
4 / -1

When C₂ H₂ , CH₄ and C₂ H₄ passes through a test tube which have ammoniacal Cu₂Cl₂, find out which gas comes out unaffected from test tube ?

A
C₂ H₂ and CH₄

B
C₂ H₂ and C₂ H₄

C
C₂ H₄ and CH₄

D
C₂ H₂
Question 9
4 / -1

A
CH₃CH₂OH

B
CH₃ — O—CH₃

C
CH₃ CH₂CHO

D
CH₂ = CHOH
Question 10
4 / -1

Acetylene and HCHO react in presence of copper acetylide catalyst to form

A
1-butyne-1, 4-diol

B
2-butyne-1, 2-diol

C
2-butyne-1, 4-diol

D
None of these

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Hydrocarbons Test - 22

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Hydrocarbons Test - 22

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Question 1

CH3 CH2CH2 CH2 CH3

CH3CH= CH —CH=CH2

CH3 —C≡ C—CH2CH3

CH3CH2CH2C≡ CH

Solution

Question 2

CH3 —C≡C—CH3

CH3 — CH=CH2

CH3 —C≡CH

CH3 —CH=CH—CH3

Question 3

Me2 C=CHMe

Me2C=CMe2

MeCH2—C(Me) =CMe2

MeCH(Me)—CH=CHMe

Question 4

3-methyl pentene-2

3-methyl pentene-3

3-methyl hexene-3

3-ethyl pentene-3

Question 5

SeO2

O3, Zn / H2O

O3, H2O2—CH3 COOH

PCC

Solution

Question 6

Schotten-Baumann reaction

Hofmann-bromamide reaction

Pinacol-Pinacolone rearrangement

Diels-Alder reaction

Question 7

1-hexyne

3-hexyne

3-methyl-1-pentyne

3,3-dimethyl-l-butyne

Question 8

C2 H2 and CH4

C2 H2 and C2 H4

C2 H4 and CH4

C2 H2

Question 9

CH3CH2OH

CH3 — O—CH3

CH3 CH2CHO

CH2 = CHOH

Question 10

1-butyne-1, 4-diol

2-butyne-1, 2-diol

2-butyne-1, 4-diol

None of these

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CH₃ CH₂CH₂ CH₂ CH₃

CH₃CH= CH —CH=CH₂

CH₃ —C≡ C—CH₂CH₃

CH₃CH₂CH₂C≡ CH

CH₃ —C≡C—CH₃

CH₃ — CH=CH₂

CH₃ —C≡CH

CH₃ —CH=CH—CH₃

Me₂ C=CHMe

Me₂C=CMe₂

MeCH₂—C(Me) =CMe₂

SeO₂

O₃, Zn / H₂O

O₃, H₂O₂—CH₃ COOH

C₂ H₂ and CH₄

C₂ H₂ and C₂ H₄

C₂ H₄ and CH₄

C₂ H₂

CH₃CH₂OH

CH₃ — O—CH₃

CH₃ CH₂CHO

CH₂ = CHOH