11th Chemistry Weekly Test - 2 ( Hydrocarbons )

MABS Institution

11th Chemistry Weekly Test - 2 ( Hydrocarbons )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

An alkylhalide with molecular formula C₆H₁₃Br on dehydro halogenation gave two isomeric alkenes X and Y with molecular formula C₆H₁₂. On reductive ozonolysis, X and Y gave four compounds CH₃COCH₃, CH₃CHO, CH₃CH₂CHO and (CH₃)₂ CHCHO. Find the alkylhalide.

What happens when propene reacts with concentrated H₂S0₄?

How will you prepare propane from Chloropropane?

Write a note or Birch reduction.

Write the structures of folowing alkanes.
1) 2, 3 – Dimethyl – 6 – (2 – methyl propyl) decane
2) 5 – (2 – Ethyl butyl) – 3, 3 – dimethyldecane
3) 5 – (1, 2 – Dimethyl propyl) – 2 – methylnonane.

(i) What will be the product formed in the following reaction?
(ii) How can propane be oxidised to propionic acid?

Show the classification of hydrocarbons.

Give the IUPAC name of the following compounds.
(a) \({ CH }_{ 3 }-{ CH }_{ 2 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } -{ CH }_{ 3 }-{ CH }_{ 3 }\)
(b)

List out the uses of alkynes.

What is Wurtz-fitting reaction?

Part - B

Generic 5 - Answer All Question

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

Explain various methods of preparation of alkane.

Elucidate the structure of benzene in detail.
Explain in detail about the addition of hydrogen halide to an unsymmetrical alkene.

What happens when propene is treated with the following.
(i) H₂SO₄
(ii) Ozone
(iii) HBr
(iv) Red hot Fe tube
(v) Acidified KMnO₄

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11th Chemistry Weekly Test - 2 ( Hydrocarbons )

MABS Institution

11th Chemistry Weekly Test - 2 ( Hydrocarbons )-Aug 2020

Part - A

Generic 2 - Answer All Question

An alkylhalide with molecular formula C6H13Br on dehydro halogenation gave two isomeric alkenes X and Y with molecular formula C6H12. On reductive ozonolysis, X and Y gave four compounds CH3COCH3, CH3CHO, CH3CH2CHO and (CH3)2 CHCHO. Find the alkylhalide.

What happens when propene reacts with concentrated H2S04?

How will you prepare propane from Chloropropane?

Write a note or Birch reduction.

Write the structures of folowing alkanes. 1) 2, 3 – Dimethyl – 6 – (2 – methyl propyl) decane 2) 5 – (2 – Ethyl butyl) – 3, 3 – dimethyldecane 3) 5 – (1, 2 – Dimethyl propyl) – 2 – methylnonane.

(i) What will be the product formed in the following reaction? (ii) How can propane be oxidised to propionic acid?

Show the classification of hydrocarbons.

Give the IUPAC name of the following compounds. (a) \({ CH }_{ 3 }-{ CH }_{ 2 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } -{ CH }_{ 3 }-{ CH }_{ 3 }\) (b)

List out the uses of alkynes.

What is Wurtz-fitting reaction?

Part - B

Generic 5 - Answer All Question

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

Explain various methods of preparation of alkane.

Elucidate the structure of benzene in detail.

Explain in detail about the addition of hydrogen halide to an unsymmetrical alkene.

What happens when propene is treated with the following. (i) H2SO4 (ii) Ozone (iii) HBr (iv) Red hot Fe tube (v) Acidified KMnO4

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An alkylhalide with molecular formula C₆H₁₃Br on dehydro halogenation gave two isomeric alkenes X and Y with molecular formula C₆H₁₂. On reductive ozonolysis, X and Y gave four compounds CH₃COCH₃, CH₃CHO, CH₃CH₂CHO and (CH₃)₂ CHCHO. Find the alkylhalide.

What happens when propene reacts with concentrated H₂S0₄?

Write the structures of folowing alkanes.
1) 2, 3 – Dimethyl – 6 – (2 – methyl propyl) decane
2) 5 – (2 – Ethyl butyl) – 3, 3 – dimethyldecane
3) 5 – (1, 2 – Dimethyl propyl) – 2 – methylnonane.

(i) What will be the product formed in the following reaction?
(ii) How can propane be oxidised to propionic acid?

Give the IUPAC name of the following compounds.
(a) \({ CH }_{ 3 }-{ CH }_{ 2 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ { CH }_{ 3 } } }{ C } } -{ CH }_{ 3 }-{ CH }_{ 3 }\)
(b)

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 happens when propene is treated with the following.
(i) H₂SO₄
(ii) Ozone
(iii) HBr
(iv) Red hot Fe tube
(v) Acidified KMnO₄