11th Chemistry Weekly Test - 2 ( Basic concept of organic reactions )

MABS Institution

11th Chemistry Weekly Test - 2 ( Basic concept of organic reactions )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

Write short notes on (i) +E effect and (ii) -E effect

What are free radical initiators?

Identify which of the following shows +1 and -I effect?
(I) -NO₂
(il) -SO₃H
(iii) -I
(iv) -OH
(v) CH₃O-
(VI) CH₃-

What are organic reduction reactions? Give an example

Explain the homolytic fission of a covalent bond?

How will you distinguish between electrophiles and nucleophiles?

Explain the positive and negative electromeric effects?

Classify the following reactions in one of the reaction type studied in this unit.
(i) \(C{ H }_{ 3 }C{ H }_{ 2 }Br+H\overset { - }{ S } \longrightarrow C{ H }_{ 3 }C{ H }_{ 2 }SH+Br\)
(ii) \({ \left( C{ H }_{ 3 } \right) }_{ 2 }C=C{ H }_{ 2 }+HCl\longrightarrow { \left( C{ H }_{ 3 } \right) }_{ 2 }CCl-C{ H }_{ 3 }\)
(iii) \(C{ H }_{ 3 }-C{ H }_{ 2 }Br+H\overset { - }{ O } \longrightarrow C{ H }_{ 2 }=C{ H }_{ 2 }+{ H }_{ 2 }O+Br\)
(iv) \({ \left( { CH }_{ 3 } \right) }_{ 3 }C-C{ H }_{ 2 }OH+HB\longrightarrow { \left( C{ H }_{ 3 } \right) }_{ 2 }CBr-C{ H }_{ 2 }-C{ H }_{ 3 }+{ H }_{ 2 }O\)

Write a short notes on positive mesomeric effect?

What happen when nitrile undergoes acid hydrolysis?

Part - B

Generic 5 - Answer All Question

Explain electron movement in organic reactions.

Explain the acidic nature of phenol.

Give a detailed account on homolytic and heterolytic cleavage.
How does inductive effect influence the reactivity and acidity of carboxylic acids?

An organic compound (A) has a molecular formula C₂H₆0 it is one of the primary alcohol. A reacts with acidified potassium dichromate to give B. B on further undergoes to oxidation reaction to give C. C on reacts with SOCl₂ to give D which is chlorinated product. Identify A,B,C and D, explain with equation.

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11th Chemistry Weekly Test - 2 ( Basic concept of organic reactions )

MABS Institution

11th Chemistry Weekly Test - 2 ( Basic concept of organic reactions )-Aug 2020

Part - A

Generic 2 - Answer All Question

Write short notes on (i) +E effect and (ii) -E effect

What are free radical initiators?

Identify which of the following shows +1 and -I effect? (I) -NO2 (il) -SO3H (iii) -I (iv) -OH (v) CH3O- (VI) CH3-

What are organic reduction reactions? Give an example

Explain the homolytic fission of a covalent bond?

How will you distinguish between electrophiles and nucleophiles?

Explain the positive and negative electromeric effects?

Write a short notes on positive mesomeric effect?

What happen when nitrile undergoes acid hydrolysis?

Part - B

Generic 5 - Answer All Question

Explain electron movement in organic reactions.

Explain the acidic nature of phenol.

Give a detailed account on homolytic and heterolytic cleavage.

How does inductive effect influence the reactivity and acidity of carboxylic acids?

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Identify which of the following shows +1 and -I effect?
(I) -NO₂
(il) -SO₃H
(iii) -I
(iv) -OH
(v) CH₃O-
(VI) CH₃-