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NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 10 Haloalkanes And Haloarenes

NCERT Solution For Class 12 Chemistry Chemistry Ii

Haloalkanes And Haloarenes Here is the CBSE Chemistry Chapter 10 for Class 12 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 12 Chemistry Haloalkanes And Haloarenes Chapter 10 NCERT Solutions for Class 12 Chemistry Haloalkanes And Haloarenes Chapter 10 The following is a summary in Hindi and English for the academic year 2024-25. You can save these solutions to your computer or use the Class 12 Chemistry.

Question 1

NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 10 Haloalkanes And Haloarenes

NCERT Solution For Class 12 Chemistry Chemistry Ii

Write structures of the following compounds:2-chloro-3-methylpentane

Write structures of the following compounds:1-chloro-4-ethylcyclohexane

Write structures of the following compounds:4-tert-Butyl-3-iodohaptane

Write structures of the following compounds:1, 4-Dibromo but-2-ene

Write structures of the following compounds:1-Bromo-4-sec butyl-2-methyl benzene.

Why is sulphuric acid not used during the reaction of alcohols with KI?

Write structures of different dihalogen derivatives of propane.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:i) A single monochloride.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Arrange each set of compounds in order of increasing boiling points:1-chloropropane, Isopropyl chloride, 1-chlorobutane.

Arrange each set of compounds in order of increasing boiling points:

Which alkyl halide from the following pairs would you expect to react more rapidly by an SN2 mechanism? Explain your answer.

Arrange each set of compounds in order of increasing boiling points:

In the following pairs of halogen compounds, which compound undergoes faster SN1 reaction? and

In the following pairs of halogen compounds, which compound undergoes faster SN1 reaction?

Identify A, B, C, D, E, R and R’ in the following:

Write IUPAC name of the following: Tert-butyl chloride.

What are polyhalogen compounds? Give two examples.

Write the IUPAC name of chloroform.

Write IUPAC name of iodoform.

Thionyl chloride is preferred in the preparation of chloro alkanes from alcohol. Give reason.

Give a convenient method of preparation of iodoalkanes.

What is the function of anhydrous zinc chloride in the reaction between alcohols and hydrogen halide?

Name one reagent that is used to convert alcohols into chloroalkanes.

What is the difference in the molar masses of alkyl halides and corresponding parent haloalkanes?

Which will have higher boiling point CH3—CH2—CH2—CH2—Br or CH3—CH(CI)— CH3? Give reason.

Give reason: The order or decreasing boiling points isCH3I > CH3Br > CH3CI > CH3F.

Name the product formed when benzene diazonium chloride solution is warmed with aqueous KI.

Why is the boiling point of iodo-benzene higher than chlorobenzene?

State what happens when isopropyl chloride is boiled with alcoholic potassium hydroxide solution.

Why is the reactivity of haloarenes low in nucleophilic substitution reactions?

Write the Frankland's reaction shown by haloalkanes.

What happens when a haloalkane reacts with sodium metal in dry ether?

With the help of a chemical equation show how will you convert 2-propanol to 1-bromo-propane.

Which compound in each of the following pairs will react faster in SN2 reaction with -OH?CH3Br or CH3I

Which compound in each of the following pairs will react faster in SN2 reaction with -OH?(CH3)3 CCl or CH3Cl

What happens when bromoethane is treated with aqueous potassium hydroxide?

What are polyhalogen compounds? Give two examples of such compounds.

Why is chloroform kept in dark bottles?

Name the products formed when acetone is warmed with sodium hypoiodite solution.

Why are chlorine derivates of organic compounds used as solvents in industry?

Give one reason why the organic halogen compounds used as solvents in industry are chlorides rather than bromides.

Iodoform gives precipitate with silver nitrate on heating while chloroform does not. why?

Give the name of the primary alcohol which does not give iodoform test.

Write the names of compounds which gives iodoform tests.

What happnes when iodoform is heated with potassium hydroxide?

What happens when CH3CH2Cl is boiled with alcholoic KOH?

What is the action of steam on CCl4?

Write the name of the product obtained when hydrogen fluoride is passed through carbon tetrachloride in presence of SbCl3 catalyst.

Write a chemical test to distinguish CHCl3 and CCl4.

How can you obtain C6H5Cl from benzene?

What happens when chlorobenzene reacts with sodium hydroxide at high temperature and pressure?

What happens when chlorobenzene is heated with sodium and chloromethane in ether?

A hydrocarbon C5H12 gives only one chlorination product. Identify the hydrocarbon.

Which compound in each of the following pairs will react faster in SN2 reaction with HO–?(a) CH3—Br or CH3I(b) (CH3)3 Cl or CH3Cl2(c) CH2=CHBr or CH2 = CH—CH2Br.

Write the structure of the following compounds halides.(a) 2-Bromo-2-methyl propane(b) 2-chloro-2-methyl propane(c) 2-Bromo-3-methylbutane.

Arrange the following to the increasing order of boiling point(i) (ii) CH3CHCH2CH3 (iii) CH3CH2CH2CH2Br (iv) (CH3)3 C—Cl

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:1-bromo-1 methyl cyclohexane.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:2-Chloro-2-methylbutane

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:2, 2, 3-trimethyl-3-bromopentane.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:Cyclo hexyl methyl bromide.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:3-bromo-1-ene.

Which one of the following has, the highest dipole moment? CH2CI2 CHCl3CCl4

p-methoxy benzyl bromide reacts faster than para nitrobenzyl bromide with ethanol to form an ether product. Explain why?

Explain the formation of two products in the following reactions:CH3CH = CHCH2Cl + H2O →CH3CH = CH.CH2OH + CH3CH(OH)CH = CH

Which metal is used in the preparation of Grignard's reagent from haloalkanes?

Which of the following is most reactive alcohol for its reaction with HCl? (CH3)3COH(CH3)2 CHCH2 OH

Which will be the main product when the following haloalkanes are treated with alcoholic KOH?(i) 2-bromobutane (ii) CH3CH2C(CH3)2Cl.

How will you distinguish between ethyl chloride and vinyl chloride?

Name the product when chloroform reacts with (a) Nitric acid (b) Silver powder.

Write structures of the following compounds:
2-chloro-3-methylpentane

Write structures of the following compounds:
1-chloro-4-ethylcyclohexane

Write structures of the following compounds:
4-tert-Butyl-3-iodohaptane

Write structures of the following compounds:
1, 4-Dibromo but-2-ene

Write structures of the following compounds:
1-Bromo-4-sec butyl-2-methyl benzene.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

$CH subscript 3 CH subscript 2 Br space plus space Nal space space space rightwards arrow$

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Arrange each set of compounds in order of increasing boiling points:
1-chloropropane, Isopropyl chloride, 1-chlorobutane.

Which alkyl halide from the following pairs would you expect to react more rapidly by an S_N2 mechanism? Explain your answer.

In the following pairs of halogen compounds, which compound undergoes faster S_N1 reaction?

and

In the following pairs of halogen compounds, which compound undergoes faster S_N1 reaction?

Which will have higher boiling point CH₃—CH₂—CH₂—CH₂—Br or CH₃—CH(CI)— CH₃? Give reason.

Give reason: The order or decreasing boiling points is
CH₃I > CH₃Br > CH₃CI > CH₃F.

Which compound in each of the following pairs will react faster in S_N2 reaction with -OH?
CH₃Br or CH₃I

Which compound in each of the following pairs will react faster in S_N2 reaction with -OH?
(CH₃)₃ CCl or CH₃Cl

What happens when CH3CH₂Clis boiled with alcholoic KOH?

What is the action of steam on CCl₄?

Write the name of the product obtained when hydrogen fluoride is passed through carbon tetrachloride in presence of SbCl₃ catalyst.

Write a chemical test to distinguish CHCl₃and CCl_4.

How can you obtain C₆H₅Cl from benzene?

A hydrocarbon C₅H₁₂ gives only one chlorination product. Identify the hydrocarbon.

Which compound in each of the following pairs will react faster in S_N2 reaction with HO^–?
(a) CH₃—Br or CH₃I
(b) (CH₃)₃ Cl or CH₃Cl₂(c) CH₂=CHBr or CH₂ = CH—CH₂Br.

Write the structure of the following compounds halides.
(a) 2-Bromo-2-methyl propane
(b) 2-chloro-2-methyl propane
(c) 2-Bromo-3-methylbutane.

Arrange the following to the increasing order of boiling point
(i)

(ii) CH₃CHCH₂CH₃

(iii) CH₃CH₂CH₂CH₂Br

(iv) (CH₃)₃ C—Cl

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
1-bromo-1 methyl cyclohexane.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
2-Chloro-2-methylbutane

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
2, 2, 3-trimethyl-3-bromopentane.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
Cyclo hexyl methyl bromide.

Predict all the alkenes that would be formed by dihydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
3-bromo-1-ene.

Which one of the following has, the highest dipole moment?

CH₂CI₂
CHCl₃
CCl₄

Explain the formation of two products in the following reactions:
CH₃CH = CHCH₂Cl + H₂O →
CH₃CH = CH.CH₂OH + CH₃CH(OH)CH = CH

Which of the following is most reactive alcohol for its reaction with HCl?
(CH₃)₃COH
(CH₃)₂ CHCH₂ OH

Which will be the main product when the following haloalkanes are treated with alcoholic KOH?
(i) 2-bromobutane
(ii) CH₃CH₂C(CH₃)₂Cl.

Name the product when chloroform reacts with
(a) Nitric acid
(b) Silver powder.

Write IUPAC names of isomers $straight C subscript 2 straight H subscript 4 Cl subscript 2$ .

Give IUPAC name for C₆H₅CH₂CH₂Cl.

An alkyl halide having molecular formula C₄H₉Cl is optically active. What is its structure?

tetra - Butyl iodide undergoes following reactions:

(CH₃)₃ Cl+H₂O → (CH₃)₃COH + HI
(CH₃)₃CI + OH^– → (CH₃)₂ C = CH₂ + H₂O + I^–

Give reasons.

RBr reacts with AgNO₂ to give both RNO₂ and RONO. Give reason.

Unlike the chlorine atom in CH₃CI, that in chlorobenzene, C₆H₅Cl, is not easily replaced by the —OH group. Give reason.

Complete the question:
$straight C subscript 6 straight H subscript 5 CH subscript 3 plus Cl subscript 2 space space space rightwards arrow with 383 space straight K comma space s u n l i g h t on top$

Complete the following:
C₂H₅OH + KBr + H₂SO₄ excess →

Name the products formed when 1-chloropropane is treated with
(i) aq. KOH
(ii) alcoholic KOH.

Arrange the following halides in order of increasing S_N2 reactivity:
CH₃Cl, CH₃Br, CH₃CH₂Cl, (CH₃)₂CHCl.

Write the various structures of C₇H₇Cl containing benzene ring. Which of these has the weakest C—Cl bond?

Identify the products A, B and C in the following:
$straight C subscript 2 straight H subscript 5 straight I space rightwards arrow with alc. space KOH on top space straight A space rightwards arrow with Br subscript 2 on top space straight B space rightwards arrow with KCN on top space straight C$

Which effect should the following resonance of vinyl chloride have on its dipole moment?
CH₂ = CH—Cl ↔ CH₂^–— CH = Cl⁺

Iodination of benzene is carried in the presence of oxidising agent like HIO₃. Give reason.

Out of C₆H₅CH₂Cl and C₆H₅CHCIC₆H₅ which is more easily hydrolysed by aqueous KOH.

Draw the structures of all eight structural isomers that have the molecular formula C₅H₁₁Br. Name each isomer according to IUPAC system and classify them as primary, secondary or tertiary bromide.

Write the structural formula of the following:
2-chloro-2-methyl propane

Write the structural formula of the following:
1-Bromo-2, 2-dimethyl propane

Write the structural formula of the following:
2-Bromo-2, 3-dichloro butane.

Write the structural formula of the following:
2-Iodo propane.

Write the IUPAC name of corresponding to the following common names:
(i) n-Butyl chloride
(ii) sec-Butyl chloride .
(iii) iso-Butyl chloride,
(iv) tert-Butyl chloride.