11th Chemistry Weekly Test - 1 ( Hydrocarbons )

MABS Institution

11th Chemistry Weekly Test - 1 ( Hydrocarbons )-Aug 2020

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Identify the compound 'Z' in the following reaction
\({ C }_{ 2 }{ H }_{ 6 }O\overset { { Al }_{ 2 }{ O }_{ 3 } }{ \underset { 623\quad K }{ \longrightarrow } } X\overset { { O }_{ 3 } }{ \longrightarrow } Y\overset { Zn/{ H }_{ 2 }O }{ \longrightarrow } \left( Z \right) \)

Formaldehyde
Acetaldehyde
Formic acid
none of these

\({ CH }_{ 3 }-\overset { \overset { { CH }_{ 3 } }{ | } }{ CH } -{ CH }_{ 2 }-{ CH }3\overset { { CI }_{ 2 } }{ \underset { UV\quad light }{ \longrightarrow } } \underset { Major }{ (A) } ;\) the compound 'A' is

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ CH } -\underset { \overset { | }{ CI } }{ { CH }_{ 2 } } -{ CH }_{ 3 }\)
\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ CI } }{ C } } -{ CH }_{ 2 }-{ CH }_{ 3 }\)
\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ CH } -{ CH }_{ 2 }-{ CH }_{ 2 }CI\)
\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 2 }CI } }{ \underset { \overset { | }{ H } }{ C } } -{ CH }_{ 2 }-{ CH }_{ 3 }\)

Which of the following is optically active

2 – methyl pentane
citric acid
Glycerol
none of these

Which one of the following shows three possible isomeric structures?

C₄H₁₀
C₅H₁₂
C₆H₁₂
C₃H₄

\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is,

Zn
Conc H₂SO₄
alc. KOH
dil H₂SO₄

How many structural isomers are possible for the molecular formula C₄H₈ which can undergo ozonolysis?

Which form of cyclohexane is free from angle strain?

Boat-form
Chair form
Twist boat
All of these

Which one of the following is not a meta director?

-NH₂
-NO₂
-COOR
-SO₃H

Which of the following compound cannot be prepared by Kolbe's electrolytic method?

CH₃-CH₃
CH₄
CH₂ = CH₂
CH u2630 CH

The bond length between central carbon atom and other carbon atom is minimum in

Propene
Propyne
Propane
Pentane

Part - B

Generic 2 - Answer All Question

Identify A and B.

Write a brief account on addition of HBr to symmetrical alkene.

Describe the conformers of n - butane.
Identify A and B from the following. \({ C }_{ 2 }{ H }_{ 6 }O\overset { con.{ H }_{ 2 }{ SO }_{ 4 } }{ \underset { 430-440K }{ \longrightarrow } } A\overset { { H }_{ 2 } }{ \underset { Ni,298K }{ \longrightarrow } } B\)

Describe the mechanism of Nitration of benzene.

Part - C

Generic 3 - Answer All Question

Explain the mechanism of addition of HBr to 3-methyl-I-butene.

Why oil spills in aqueous environment spread so quickly?

What happens when ealkane is,
(i) burnt in air
(ii) aromatized
(iii) reacted with steam?

How many types of polymerisation are·possible in alkynes?
Explain the isomerism exhibited by alkenes.

Part - D

Generic 5 - Answer All Question

Explain various methods of preparation of alkane.

Elucidate the structure of benzene in detail.
Explain the mechanism of the reaction between methane and chlorine.

Write the mechanism for following reaction.
\(\underset { (Propene) }{ { CH }_{ 3 }-CH={ CH }_{ 2 }+HBr } \overset { \left( { C }_{ 6 }{ H }_{ 5 }{ CO }_{ 2 } \right) { O }_{ 2 } }{ \longrightarrow } \underset { 1I-bromoprone }{ { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 2 }-Br } \)

What are meta directors? Explain with suitable example

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11th Chemistry Weekly Test - 1 ( Hydrocarbons )

MABS Institution

11th Chemistry Weekly Test - 1 ( Hydrocarbons )-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

Identify the compound 'Z' in the following reaction \({ C }_{ 2 }{ H }_{ 6 }O\overset { { Al }_{ 2 }{ O }_{ 3 } }{ \underset { 623\quad K }{ \longrightarrow } } X\overset { { O }_{ 3 } }{ \longrightarrow } Y\overset { Zn/{ H }_{ 2 }O }{ \longrightarrow } \left( Z \right) \)

\({ CH }_{ 3 }-\overset { \overset { { CH }_{ 3 } }{ | } }{ CH } -{ CH }_{ 2 }-{ CH }3\overset { { CI }_{ 2 } }{ \underset { UV\quad light }{ \longrightarrow } } \underset { Major }{ (A) } ;\) the compound 'A' is

Which of the following is optically active

Which one of the following shows three possible isomeric structures?

\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is,

How many structural isomers are possible for the molecular formula C4H8 which can undergo ozonolysis?

Which form of cyclohexane is free from angle strain?

Which one of the following is not a meta director?

Which of the following compound cannot be prepared by Kolbe's electrolytic method?

The bond length between central carbon atom and other carbon atom is minimum in

Part - B

Generic 2 - Answer All Question

Identify A and B.

Write a brief account on addition of HBr to symmetrical alkene.

Describe the conformers of n - butane.

Identify A and B from the following. \({ C }_{ 2 }{ H }_{ 6 }O\overset { con.{ H }_{ 2 }{ SO }_{ 4 } }{ \underset { 430-440K }{ \longrightarrow } } A\overset { { H }_{ 2 } }{ \underset { Ni,298K }{ \longrightarrow } } B\)

Describe the mechanism of Nitration of benzene.

Part - C

Generic 3 - Answer All Question

Explain the mechanism of addition of HBr to 3-methyl-I-butene.

Why oil spills in aqueous environment spread so quickly?

What happens when ealkane is, (i) burnt in air (ii) aromatized (iii) reacted with steam?

How many types of polymerisation are·possible in alkynes?

Explain the isomerism exhibited by alkenes.

Part - D

Generic 5 - Answer All Question

Explain various methods of preparation of alkane.

Elucidate the structure of benzene in detail.

Explain the mechanism of the reaction between methane and chlorine.

Write the mechanism for following reaction. \(\underset { (Propene) }{ { CH }_{ 3 }-CH={ CH }_{ 2 }+HBr } \overset { \left( { C }_{ 6 }{ H }_{ 5 }{ CO }_{ 2 } \right) { O }_{ 2 } }{ \longrightarrow } \underset { 1I-bromoprone }{ { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 2 }-Br } \)

What are meta directors? Explain with suitable example

Comment

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Identify the compound 'Z' in the following reaction
\({ C }_{ 2 }{ H }_{ 6 }O\overset { { Al }_{ 2 }{ O }_{ 3 } }{ \underset { 623\quad K }{ \longrightarrow } } X\overset { { O }_{ 3 } }{ \longrightarrow } Y\overset { Zn/{ H }_{ 2 }O }{ \longrightarrow } \left( Z \right) \)

How many structural isomers are possible for the molecular formula C₄H₈ which can undergo ozonolysis?

What happens when ealkane is,
(i) burnt in air
(ii) aromatized
(iii) reacted with steam?

Write the mechanism for following reaction.
\(\underset { (Propene) }{ { CH }_{ 3 }-CH={ CH }_{ 2 }+HBr } \overset { \left( { C }_{ 6 }{ H }_{ 5 }{ CO }_{ 2 } \right) { O }_{ 2 } }{ \longrightarrow } \underset { 1I-bromoprone }{ { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 2 }-Br } \)