Tamil Nadu Board of Secondary EducationHSC Science Class 11th
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Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 12 - Basic concept of organic reactions [Latest edition]

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Class 11th Chemistry Volume 1 and 2 Answers Guide - Shaalaa.com
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Chapter 12: Basic concept of organic reactions

Choose the best answerWrite brief answer to the following questions.
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Choose the best answer [Pages 175 - 176]

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide Chapter 12 Basic concept of organic reactionsChoose the best answer [Pages 175 - 176]

Choose the best answer | Q I. 1. | Page 175

For the following reactions

  1. \[\ce{CH3CH2CH2Br + KOH → CH3 – CH = CH2 + KBr + H2O}\]
  2. \[\ce{(CH3)3CBr + KOH → (CH3)3COH + KBr}\]

Which of the following statement is correct?

  • (A) is elimination, (B) and (C) are substitution

  • (A) is substitution, (B) and (C) are elimination

  • (A) and (B) are elimination and (C) is addition reaction

  • (A) is elimination, B is substitution and (C) is addition reaction.

Choose the best answer | Q I. 2. | Page 175

What is the hybridisation state of benzyl carbonium ion?

  • sp2

  • spd2

  • sp3

  • sp2d

Choose the best answer | Q I. 3. | Page 175

Decreasing order of nucleophilicity is ______.

  • OH > NH2 > -OCH3 > RNH2

  • NH2 > OH > -OCH3 > RNH2

  • NH2 > CH3O > OH > RNH2

  • CH3O > NH2 > OH > RNH2

Choose the best answer | Q I. 4. | Page 175

Which of the following species is not electrophilic in nature?

  • Cl+

  • BH3

  • H3O+

  • +NO2

Choose the best answer | Q I. 5. | Page 175

Homolytic fission of covalent bond leads to the formation of ______.

  • electrophile

  • nucleophile

  • Carbo cation

  • free radical

Choose the best answer | Q I. 6. | Page 175

Hyper Conjugation is also known as

  • no bond resonance

  • Baker – nathan effect

  • both no bond resonance and Baker – nathan effect

  • none of these

Choose the best answer | Q I. 7. | Page 175

Which of the group has highest + I effect?

  • CH3

  • CH3 – CH2 –

  • (CH3)2 – CH-

  • (CH3)3 – C –

Choose the best answer | Q I. 8. | Page 175

Which of the following species does not exert a resonance effect?

  • C6H5OH

  • C6H5Cl

  • C6H5NH2

  • C6H5NH3

Choose the best answer | Q I. 9. | Page 175

- I effect is shown by ______.

  • – Cl

  •  – Br

  • both – Cl and – Br

  •  – CH3

Choose the best answer | Q I. 10. | Page 175

Which of the following carbocation will be most stable?

  • Ph3+C –

  • CH3 – +CH2 –

  • (CH3)2 – +CH

  • CH2 = CH – +CH2

Choose the best answer | Q I. 11. | Page 175

Assertion: Tertiary Carbocations are generally formed more easily than primary Carbocations ions.

Reason: Hyper conjucation as well as inductive effect due to additional alkyl group stabilize tertiary carbonium ions.

  • both assertion and reason are true and reason is the correct explanation of assertion.

  • both assertion and reason are true but reason is not the correct explanation of assertion.

  • assertion is true but reason is false.

  • both assertion and reason are false.

Choose the best answer | Q I. 12. | Page 176

Heterolytic fission of C–C bond results in the formation of ______.

  • free radical

  • Carbanion

  • Carbocation

  • Carbanion and Carbocation

Choose the best answer | Q I. 13. | Page 176

Which of the following represent a set of nucleophiles?

  • BF3, H2O, NH2-

  • AlCl3, BF3, NH3

  • CN, RCH2, ROH

  • H+, RNH3+, :CCl2

Choose the best answer | Q I. 14. | Page 176

Which of the following species does not acts as a nucleophile?

  • ROH

  • ROR

  • PCl3

  • BF3

Choose the best answer | Q I. 15. | Page 176

The geometrical shape of carbocation is ______.

  • Linear

  • tetrahedral

  • Planar

  • Pyramidal

Write brief answer to the following questions. [Page 176]

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide Chapter 12 Basic concept of organic reactionsWrite brief answer to the following questions. [Page 176]

Write brief answer to the following questions. | Q II. 1. (a) | Page 176

Write a short note on resonance.

Write brief answer to the following questions. | Q II. 1. (b) | Page 176

Write a short note on hyperconjucation.

Write brief answer to the following questions. | Q II. 2. | Page 176

What is electrophiles? Give a suitable example.

Write brief answer to the following questions. | Q II. 2. | Page 176

What is nucleophiles? Give a suitable example.

Write brief answer to the following questions. | Q II. 3. (i) | Page 176

Show the heterolysis of a covalent bond by using curved arrow notation and complete the following equation. Identify the nucelophile.

CH3 – Br + KOH →

Write brief answer to the following questions. | Q II. 3. (ii) | Page 176

Show the heterolysis of a covalent bond by using curved arrow notation and complete the following equation. Identify the nucelophile.

\[\ce{CH3 – O – CH3 + HI →}\]

Write brief answer to the following questions. | Q II. 4. | Page 176

Explain inductive effect with suitable example.

Write brief answer to the following questions. | Q II. 5. | Page 176

Explain the electromeric effect.

Write brief answer to the following questions. | Q II. 6. (i) | Page 176

Give example for the following type of organic reaction.

β - elimination

Write brief answer to the following questions. | Q II. 6. (ii) | Page 176

Give example for the following type of organic reaction.

Electrophilic substitution

Chapter 12: Basic concept of organic reactions

Choose the best answerWrite brief answer to the following questions.
Class 11th Chemistry Volume 1 and 2 Answers Guide - Shaalaa.com

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 12 - Basic concept of organic reactions

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 12 (Basic concept of organic reactions) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Class 11th Chemistry Volume 1 and 2 Answers Guide solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 12 Basic concept of organic reactions are Basic Concept of Organic Reactions, Different Types of Organic Reactions.

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