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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 10 - Halogen Derivatives [Latest edition]

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12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

Chapter 10: Halogen Derivatives

Multiple choice questionsVery Short Answer QuestionsShort Answer Questions (Type-Ⅰ)Short Answer Questions (Type-II)Long Answer Questions
Multiple choice questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 10 Halogen Derivatives Multiple choice questions

1 Mark

Multiple choice questions | Q 1

The type of mono halogen derivative in which a halogen atom is bonded to sp3 hybridized carbon atom next to carbon-carbon double bond is ______________

  • alkyl halide

  • allylic halide

  • vinylic halide

  • benzylic halide

Multiple choice questions | Q 2

Aromatic electrophilic substitution with iodine can be carried out using _____________

  • HNO3

  • HCl

  • HI

  • H3PO4

Multiple choice questions | Q 3

For the isomeric dihalobenzenes, melting point of __________

  • ortho isomer is higher

  • meta isomer is higher

  • para isomer is higher

  • all isomers is nearly same

Multiple choice questions | Q 4

Optical activity of a molecule is associated with _______________

  • plane polarized light

  • 3-D structure of a molecule

  • achiral molecule

  • superimposable mirror images

Multiple choice questions | Q 5

Propane nitrile can be prepared by heating ____________

  • ethyl bromide with alcoholic KCN

  • propyl bromide with alcoholic KCN

  • ethyl bromide with alcoholic AgCN

  • propyl bromide with alcoholic AgCN

Multiple choice questions | Q 6

The following will react faster by SN1 mechanism

  • 1-chloropropane

  • 2-chloropropane

  • 2-chloro-2-methylpropane

  • chloroethane

Multiple choice questions | Q 7

Major product of the following reaction is _______________

\[\ce{CH3-CH2-Mg-Br + NH3 ->?}\]

  • CH3-CH2-Mg-NH2

  • CH3-CH3

  • Mg-Br-NH2

  • CH3-CH2-Br

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Very Short Answer Questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 10 Halogen Derivatives Very Short Answer Questions

1 Mark

Very Short Answer Questions | Q 1

Write IUPAC name of the following.

Very Short Answer Questions | Q 2

Write the major product of the following reaction.

Very Short Answer Questions | Q 3

Write the correct decreasing order of boiling point for bromomethane, chloroform, dibromomethane and bromoform.

Very Short Answer Questions | Q 4

Write IUPAC name of the product ‘B’ in the following reaction sequence.

\[\ce{C2H5OH ->[NaBr/H2SO4][\Delta] A ->[Nal][acetone]B}\]

Very Short Answer Questions | Q 5

Nucleophilic substitution reaction of 2, 4-dinitrochlorobenzene is faster than p-nitrochlorobenzene. Give reason.

Very Short Answer Questions | Q 6

Name the reagent used to convert alkyl halide to ester.

Very Short Answer Questions | Q 7

Write the correct order of increasing ease of dehydrohalogenation.

\[\ce{\underset{\text{(I)}}{CH3 - CH2 - CH2 - Cl}}\]

\[\ce{\underset{\text{(II)}}{CH3 - CH(Cl) - CH3}}\]

\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3-C-Cl}\phantom{...}\\
|\\
\ce{CH3}\\
\ce{(III)}
\end{array}\]

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Short Answer Questions (Type-Ⅰ)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 10 Halogen Derivatives Short Answer Questions (Type-Ⅰ)

2 Marks

Short Answer Questions (Type-Ⅰ) | Q 1

Explain. Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions.

Short Answer Questions (Type-Ⅰ) | Q 2

Explain reactions of haloarenes with sodium metal.

Short Answer Questions (Type-Ⅰ) | Q 3

Give reason. Though alkyl halides are moderately polar, they are insoluble in water.

Short Answer Questions (Type-Ⅰ) | Q 4

Explain optical activity of 2-chlorobutane

Short Answer Questions (Type-Ⅰ) | Q 5

Distinguish between SN1 and SN2 mechanism of substitution reaction.

Short Answer Questions (Type-Ⅰ) | Q 6

Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.

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Short Answer Questions (Type-II)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 10 Halogen Derivatives Short Answer Questions (Type-II)

3 Marks

Short Answer Questions (Type-II) | Q 1

Explain the factors affecting SN1 and SN2 mechanism.

Short Answer Questions (Type-II) | Q 2

Explain aqueous alkaline hydrolysis of tert. butyl bromide.

Short Answer Questions (Type-II) | Q 3.1

How are the following conversions carried out?

propene to 1-iodopropane

Short Answer Questions (Type-II) | Q 3.2

How are the following conversions carried out?

propene to 2-nitropropane

Short Answer Questions (Type-II) | Q 3.3

How are the following conversions carried out?

benzene to biphenyl

Short Answer Questions (Type-II) | Q 4

What is Grignard reagent? How is it prepared? Why are they prepared under anhydrous condition?

Short Answer Questions (Type-II) | Q 5.1

Write chemical equations indicating the action of following on bromobenzene.

CH3COCl/anhy. AlCl3

Short Answer Questions (Type-II) | Q 5.2

Write chemical equations indicating the action of following on bromobenzene.

fuming H2SO4

Short Answer Questions (Type-II) | Q 5.3

Write chemical equations indicating the action of following on bromobenzene.

conc. HNO3/conc. H2SO4

Short Answer Questions (Type-II) | Q 6

An organic compound A with molecular formula C4H10O on treatment with phosphorus pentachloride gives alkyl chloride. Alkyl chloride on treatment with Mg in presence of dry ether gives a highly reactive compound B.
Compound B reacts with water to give hydrocarbon C. Alkyl chloride on treatment with Na in dry ether as a solvent gives alkane, 2,2,3,3-tetramethylbutane. Identify ‘A’, ‘B’, ‘C’

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Long Answer Questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 10 Halogen Derivatives Long Answer Questions

4 Marks

Long Answer Questions | Q 1

Write the equations for the preparation of ethyl chloride using

  1. Hydrogen halide
  2. ethene
  3. Thionyl chloride

Which of these methods is preferred and why?

Long Answer Questions | Q 2.1

What is dehydrohalogenation? State the rule for the formation of the preferred product of dehydrohalogenation.

Long Answer Questions | Q 2.2

Predict all the alkenes that would be formed by dehydrohalogenation of the following alkyl halide.

  1. 2-chloro-2-methylbutane
  2. 3-bromo-2,2,3-trimethylpentane
Long Answer Questions | Q 3

Observe the following compounds and answer the questions given below.


      (I)

\[\ce{\underset{\text{(II)}}{CH3 - CH2 - Br}}\]

  1. Identify the type of halides.
  2. Explain the nature of the C – Br bond in both of these halides.
  3. Which of these compounds will undergo aqueous alkaline hydrolysis readily? Write the reaction in support of your answer.
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Chapter 10: Halogen Derivatives

Multiple choice questionsVery Short Answer QuestionsShort Answer Questions (Type-Ⅰ)Short Answer Questions (Type-II)Long Answer Questions
12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 10 - Halogen Derivatives

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 10 (Halogen Derivatives) 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 Maharashtra State Board 12th Standard HSC Chemistry Maharashtra State Board 2021 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. SCERT Maharashtra Question Bank textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 10 Halogen Derivatives are Classification of Halogen Derivatives, Nomenclature of Halogen Derivatives, Methods of Preparation of Alkyl Halides, Physical Properties, Optical Isomerism in Halogen Derivatives, Chemical Properties, Reaction with Active Metals, Uses and Environmental Effects of Some Polyhalogen Compounds, Nomenclature, Reactions of Haloalkanes - Elimination Reactions.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Halogen Derivatives 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 SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 10 Halogen Derivatives 12th Board Exam extra questions for 12th Standard HSC Chemistry Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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