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 13 - Hydrocarbons [Latest edition]

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Class 11th Chemistry Volume 1 and 2 Answers Guide - Shaalaa.com
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Chapter 13: Hydrocarbons

Choose the best answerWrite brief answer to the following questions.
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Choose the best answer [Pages 220 - 223]

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide Chapter 13 HydrocarbonsChoose the best answer [Pages 220 - 223]

Choose the best answer | Q I. 1. | Page 220

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is ______.

  • The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain.

  • The staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain.

  • The staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain.

  • The staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has no torsional strain.

Choose the best answer | Q I. 2. | Page 220

\[\ce{C2H5Br + 2Na ->[dry ether]C4H10 + 2NaBr}\]

The above reaction is an example of which of the following.

  • Reimer Tiemann reaction

  • Wurtz reaction

  • Aldol condensation

  • Hoffmann reaction

Choose the best answer | Q I. 3. | Page 220

An alkyl bromide (A) reacts with sodium in ether to form 4, 5 – diethyloctane, the compound (A) is

  • CH3(CH2)3Br

  • CH3(CH2)5Br

  • CH3(CH2)3 CH(Br)CH3

  • \[\begin{array}{cc}\ce{CH3 - (CH2)2 - CH(Br) - CH2}\\\phantom{.........................}|\\
    \phantom{............................}\ce{CH3}
    \end{array}\]

Choose the best answer | Q I. 4. | Page 220

The C – H bond and C – C bond in ethane are formed by which of the following types of overlap.

  • sp3 – s and sp3 – sp3

  • sp2 – s and sp2 – sp2

  • sp – sp and sp – sp

  • p – s and p – p

Choose the best answer | Q I. 5. | Page 220

In the following reaction,

The major product obtained is

Choose the best answer | Q I. 6. | Page 220

Which of the following is optically active?

  • 2 – methyl pentane

  • citric acid

  • Glycerol

  • none of of these

Choose the best answer | Q I. 7. | Page 221

The compounds formed at anode in the electrolysis of an aquous solution of potassium acetate are ______.

  • CH4 and H2

  • CH4 and CO2

  • C2H6 and CO2

  • C2H4 and Cl2

Choose the best answer | Q I. 8. | Page 221

The general formula for cyclo alkanes.

  • CnHn

  • CnH2n

  • CnH2n-2

  • CnH2n+2

Choose the best answer | Q I. 9. | Page 221

The compound that will react most readily with gaseous bromine has the formula (NEET) ______.

  • C3H6

  • C2H2

  • C4H10

  • C2H4

Choose the best answer | Q I. 10. | Page 221

Which of the following compounds shall not produce propene by reaction with HBr followed by elemination (or) only direct elimination reaction (NEET).

  • \[\ce{CH3 – CH2 – CH2 – OH}\]

  • \[\ce{H2C = C = O}\]

  • \[\ce{CH3 – CH2 – CH2Br}\]

Choose the best answer | Q I. 11. | Page 221

Which among the following alkenes on reductive ozonolysis produces only propanone?

  • 2 – Methyl propene

  • 2 – Methyl but – 2 – ene

  • 2, 3 – Dimethyl but – 1- ene

  • 2, 3 – Dimethyl but – 2 – ene

Choose the best answer | Q I. 12. | Page 221

The major product formed when 2 – bromo – 2 – methyl butane is refluxed with ethanolic KOH is ______.

  • 2 – methylbut – 2- ene

  • 2 – methyl butan – 1 – ol

  • 2 – methyl but – 1 – ene

  • 2 – methyl butan – 2- ol

Choose the best answer | Q I. 13. | Page 221

Major product of the below mentioned reaction is, \[\ce{(CH3 )2 C = CH2 ->[ICI]}\]

  • 2 – chloro – 1 – iode – 2 – methyl propane

  • 1 – chloro – 2 – iodo – 2 – methyl propane

  • 1, 2 – dichloro – 2 – methyl propane

  • 1, 2 – diiodo – 2 – methyl propane

Choose the best answer | Q I. 14. | Page 221

The IUPAC name of the following compound is

\[\begin{array}{cc}
\phantom{........}\ce{Cl}\phantom{......}\ce{CH2 - CH3}\\\backslash\phantom{......}/\\
\ce{C = C}\\/\phantom{......}\backslash\\
\ce{H3C}\phantom{......}\ce{I}
\end{array}\]

  • trans – 2- chloro – 3- iodo – 2- pentane

  • cis – 3- iodo – 4 chloro – 3 – pentane

  • trans – 3 – iodo – 4 – chloro – 3 – pentene

  • cis – 2 – chloro – 3 iodo – 2 – pentene

Choose the best answer | Q I. 15. | Page 221

Cis – 2- butene and trans – 2 – butene are ______.

  • conformational isomers

  • structural isomers

  • configurational isomers

  • optical isomers

Choose the best answer | Q I. 16. | Page 221

Identify the compound (A) in the following reaction

Choose the best answer | Q I. 17. | Page 222

\[\begin{array}{cc}
\ce{CH2 - CH2 ->[(A)] CH ≡ CH}\\
|\phantom{.......}|\phantom{.................}\\
\ce{Br}\phantom{.....}\ce{Br}\phantom{.................}
\end{array}\], where A is,

  • Zn

  • conc. H2SO4

  • alc. KOH

  • dil. H2SO4

Choose the best answer | Q I. 18. | Page 222

Consider the nitration of benzene using mixed con H2SO4 and HNO3 if a large quantity of KHSO4 is added to the mixture, the rate of nitration will be ______.

  • unchanged

  • doubled

  • faster

  • slower

Choose the best answer | Q I. 19. | Page 222

In which of the following molecules, all atoms are co-planar

  • both and

Choose the best answer | Q I. 20. | Page 222

Propyne on passing through red hot iron tube gives

  • none of these

Choose the best answer | Q I. 21. | Page 222

is

  • both and

Choose the best answer | Q I. 22. | Page 222

Which one of the following is non aromatic?

Choose the best answer | Q I. 23. | Page 222

Which of the following compounds will not undergo Friedal – crafts reaction easily ? (NEET)

  • Nitro benzene

  • Toluene

  • Cumene

  • Xylene

Choose the best answer | Q I. 24. | Page 223

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

  • – COOH

  • – NO2

  • -C ≡ N

  • -SO3H

Choose the best answer | Q I. 25. | Page 223

Which of the following can be used as the halide component for friedal - crafts reaction?

  • Chloro benzene

  • Bromo benzene

  • Chloro ethene

  • Isopropyl chloride

Choose the best answer | Q I. 26. | Page 223

An alkane is obtained by decarboxylation of sodium propionate. Same alkane can be prepared by ______.

  • Catalytic hydrogenation of propene

  • action of sodium metal on iodomethane

  • reduction of 1 – chloro propane

  • reduction of bromomethane

Choose the best answer | Q I. 27. | Page 223

Which of the following is aliphatic saturated hydrocarbon?

  • C8H18

  • C9H18

  • C8H14

  • All of these

Choose the best answer | Q I. 28. | Page 223

Identify the compound 'Z' in the following reaction

\[\ce{C2H6O ->[Al2O3][623 K] X ->[O3] Y ->[Zn/H2O] (Z)}\]

  • Formaldehyde

  • Acetaldehyde

  • Formic acid

  • none of these

Choose the best answer | Q I. 29. | Page 223

Peroxide effect (Kharasch effect) can be studied in case of ______.

  • Oct – 4 – ene

  • hex – 3 – ene

  • pent – 1 – ene

  • but – 2 – ene

Choose the best answer | Q I. 30. | Page 223

2 – butyne on chlorination gives ______.

  • 1 – chloro butane

  • 1, 2 – dichloro butane

  • 1, 1, 2, 2 – tetrachlorobutane

  • 2, 2, 3, 3 – tetra chloro butane

Write brief answer to the following questions. [Pages 223 - 224]

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide Chapter 13 HydrocarbonsWrite brief answer to the following questions. [Pages 223 - 224]

Write brief answer to the following questions. | Q II. 1. 1) | Page 223

Give IUPAC name for the following compound.

\[\ce{CH3 –CH=CH–CH=CH–C≡C–CH3}\]

Write brief answer to the following questions. | Q II. 1. 2) | Page 223

Give IUPAC name for the following compound.

\[\begin{array}{cc}\ce{C2H5}\phantom{.}\ce{CH3}\phantom{.......}\\|\phantom{.....}|\phantom{.........}\\
\ce{CH3 - C - C - C ≡ C - CH3}\\
|\phantom{.....}|\phantom{.........}\\
\ce{CH3}\phantom{..}\ce{H}\phantom{.........}
\end{array}\]

Write brief answer to the following questions. | Q II. 1. 3) | Page 223

Give IUPAC name for the following compound.

\[\ce{(CH3)3 C – C ≡ C – CH (CH3)2}\]

Write brief answer to the following questions. | Q II. 1. 4) | Page 223

Give IUPAC name for the following compound.

Ethyl isopropyl acetylene

Write brief answer to the following questions. | Q II. 1. 5) | Page 223

Give IUPAC name for the following compound.

\[\ce{CH ≡ C – C ≡ C – C ≡ CH}\]

Write brief answer to the following questions. | Q II. 2. | Page 223

Identify the compound A, B, C and D in the following series of reactions.

Write brief answer to the following questions. | Q II. 3. | Page 224

Write short notes on ortho, para directors in aromatic electrophilic substitution reactions.

Write brief answer to the following questions. | Q II. 4. | Page 224

How is propyne prepared from an alkylene dihalide ?

Write brief answer to the following questions. | Q II. 5. | Page 224

An alkyl halide 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, CH3CH, CHO and (CH3)2 CHCHO. Find the alkyl halide.

Write brief answer to the following questions. | Q II. 6. | Page 224

Describe the mechanism of Nitration of benzene.

Write brief answer to the following questions. | Q II. 7. | Page 224

How does Huckel rule help to decide the aromatic character of a compound?

Write brief answer to the following questions. | Q II. 8. 1) | Page 224

Suggest the route for the preparation of the following from benzene.

3 – chloro nitrobenzene

Write brief answer to the following questions. | Q II. 8. 2) | Page 224

Suggest the route for the preparation of the following from benzene.

4 – chlorotoluene

Write brief answer to the following questions. | Q II. 8. 3) | Page 224

Suggest the route for the preparation of the following from benzene.

Bromo benzene

Write brief answer to the following questions. | Q II. 8. 4) | Page 224

Suggest the route for the preparation of the following from benzene.

m - dinitro benzene

Write brief answer to the following questions. | Q II. 9. | Page 224

Suggest a simple chemical test to distinguish propane and propene.

Write brief answer to the following questions. | Q II. 10. | Page 224

What happens when Isobutylene is treated with acidified potassium permanganate?

Write brief answer to the following questions. | Q II. 11. i) | Page 224

How will you convert ethyl chloride into ethane?

Write brief answer to the following questions. | Q II. 11. ii) | Page 224

How will you convert ethyl chloride into n – butane?

Write brief answer to the following questions. | Q II. 12. | Page 224

Describe the conformers of n – butane.

Write brief answer to the following questions. | Q II. 13. | Page 224

Write the chemical equations for combustion of propane.

Write brief answer to the following questions. | Q II. 14. | Page 224

Explain Markow nikoff’s rule with suitable example.

Write brief answer to the following questions. | Q II. 15. | Page 224

What happens when ethylene is passed through cold dilute alkaline potassium permanganate.

Write brief answer to the following questions. | Q II. 16. 1) | Page 224

Write the structure of the following alkanes.

2, 3 – Dimethyl – 6 – (2 – methyl propyl) decane

Write brief answer to the following questions. | Q II. 16. 2) | Page 224

Write the structure of the following alkanes.

5 – (2 – Ethyl butyl) – 3, 3 – dimethyldecane

Write brief answer to the following questions. | Q II. 16. 3) | Page 224

Write the structure of the following alkanes.

5 – (1, 2 – Dimethyl propyl) – 2 – methylnonane

Write brief answer to the following questions. | Q II. 17. | Page 224

How will you prepare propane from a sodium salt of fatty acid?

Write brief answer to the following questions. | Q II. 18. | Page 224

Identify A and B.

Write brief answer to the following questions. | Q II. 19. i) | Page 224

Complete the following:

\[\ce{2 - butyne ->[Lindlar Catalyst]}\]

Write brief answer to the following questions. | Q II. 19. ii) | Page 224

Complete the following:

\[\ce{CH2 = CH2 ->[I2]}\]

Write brief answer to the following questions. | Q II. 19. iii) | Page 224

Complete the following:

\[\begin{array}{cc}
\ce{CH2 - CH2 ->[Zn/C2H5OH]}\\
|\phantom{.......}|\phantom{..............}\\
\ce{Br}\phantom{.....}\ce{Br}\phantom{..............}
\end{array}\]

Write brief answer to the following questions. | Q II. 19. (iv) | Page 224

Complete the following:

\[\ce{CaC2 ->[H2O]}\]

Write brief answer to the following questions. | Q II. 20. | Page 224

How will distinguish 1 – butyne and 2 – butyne?

Chapter 13: Hydrocarbons

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 13 - Hydrocarbons

Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 13 (Hydrocarbons) 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.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Tamil Nadu Board Samacheer Kalvi textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 11th Chemistry Volume 1 and 2 Answers Guide chapter 13 Hydrocarbons are Alkenes, Alkynes, Aromatic Hydrocarbons, Introduction and Classification of Alkanes, Alkanes.

Using Tamil Nadu Board Samacheer Kalvi Class 11th solutions Hydrocarbons exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Tamil Nadu Board Samacheer Kalvi Solutions are important questions that can be asked in the final exam. Maximum students of Tamil Nadu Board of Secondary Education Class 11th prefer Tamil Nadu Board Samacheer Kalvi Textbook Solutions to score more in exam.

Get the free view of chapter 13 Hydrocarbons Class 11th extra questions for Class 11th Chemistry Volume 1 and 2 Answers Guide and can use Shaalaa.com to keep it handy for your exam preparation

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