JEE Chemistry Haloalkanes and Haloarenes MCQs Set B

Refer to JEE Chemistry Haloalkanes and Haloarenes MCQs Set B provided below available for download in Pdf. The MCQ Questions for Full Syllabus Chemistry with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Haloalkanes and Haloarenes are an important part of exams for Full Syllabus Chemistry and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Chemistry and also download more latest study material for all subjects

MCQ for Full Syllabus Chemistry Haloalkanes and Haloarenes

Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for Haloalkanes and Haloarenes in Full Syllabus.

Haloalkanes and Haloarenes MCQ Questions Full Syllabus Chemistry with Answers

 

 

Question: Which of the following is used in fire extinguishers

  • a) CCl4
  • b) CHCl3
  • c) CH4
  • d) None of these

Answer: CCl4

 

Question:  Solvent which is used in the synthesis of chlorofluorocarbons

  • a) carbon tetrachloride
  • b) iodoform
  • c) chloroform
  • d) methylene chloride

Answer: carbon tetrachloride

 

Question: Uses of dichloromethane is

  • a) All of the above
  • b) metal cleansing and finishing solvent
  • c) solvent in drugs manufacturing
  • d) paint remover

Answer: All of the above

 

Question: Trichloroacetaldehyde, CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question: Chloroform on treatment with conc. HNO3 gives

  • a) Chloropicrin
  • b) Picric acid
  • c) Nitromethane
  • d) Acetylene

Answer: Chloropicrin

 

Question: Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere

  • a) Freons
  • b) Ferrocene
  • c) Polyhalogens
  • d) Fullerenes

Answer: Freons

 

Question: Haloforms are trihalogen derivatives of

  • a) Methane
  • b) Benzene
  • c) Ethane
  • d) Propane

Answer: Methane

 

Question: Which of the following compounds is used as a refrigerant

  • a) CCl2F2
  • b) CCl4
  • c) CF4
  • d) Acetone

Answer: CCl2F2

 

Question: Chloroform is used as

  • a) Industrial solvent
  • b) Insecticide
  • c) Fire extinguisher
  • d) Refrigerant

Answer:  Industrial solvent

 

Question: AgNO3 does not give precipitate with CHCl3 because

  • a) CHCl3 does not ionise in water
  • b) CHCl3 is chemically inert
  • c) None of these
  • d) Both

Answer: CHCl3 does not ionise in water

 

Question: When chloroform is exposed to light and air, it forms

  • a) phosgene gas
  • b) None of these
  • c) methyl chloride
  • d) carbon tetrachloride

Answer: phosgene gas

 

Question:

  • a) DDT
  • b) BHC
  • c) DNA
  • d) RNA

Answer: DDT

 

Question: If chloroform is left open in air in the presence of sunlight, it gives

  • a) carbonyl chloride
  • b) carbon tetrachloride
  • c) None of these
  • d) lewisite

Answer: carbonyl chloride

 

Question: Full name of DDT is

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question: Freon(s) is/are

  • a) All of these
  • b) CFCl3
  • c) CClF3
  • d) CCl2F2

Answer: All of these

 

Question: Freon-12 is commonly used as

  • a) refrigerant
  • b) a fire extinguisher
  • c) insecticide
  • d) a solvent

Answer: refrigerant

 

Question: Freon used as refrigerant is

  • a) CCl2F2
  • b) CF4
  • c) CH2F2
  • d) None of these

Answer: CCl2F2

 

Question:  Methylene chloride can be used as

  • a) All of these
  • b) solvent in manufacturing of drugs
  • c) propellant in aerosols
  • d) paint remover

Answer: All of these

  

Question: Which of the following are the harmful effects of methylene chloride?

  • a) All of these
  • b) Skin burning
  • c) Dizziness, nausea and tingling
  • d) Impaired hearing and vision

Answer: All of these

 

Question:

  • a) (i), (ii) and (iv) are correct
  • b) (i), (ii) and (iii) are correct
  • c) (ii), (iii) and (iv) are correct
  • d) (i), (ii), (iii) and (iv) are correct

Answer: (i), (ii) and (iv) are correct

 

More Questions..........................

 

Question: Following statements are given regarding the preparation of aryl halides from toluene. Read the following statements and choose the correct option.

(i) Aryl chlorides and bromides can be easily prepared by this method.
(ii) The ortho and para isomers formed in the reaction can not be separated easily due to small difference in their melting point.
(iii) Reactions with iodine are reversible in nature and require the presence of an oxidising agent.
(iv) Fluoro compounds are not prepared by this method due to low reactivity of fluorine.

  • a) (i) and (iii) are correct
  • b) (ii) and (iv) are correct
  • c) (i), (ii), and (iii) are correct
  • d) All statements are correct

Answer: (i) and (iii) are correct

 

Question:  Read the following statements and choose the correct option.

(i) For the same alkyl group, the boiling points of alkyl halides decreases in the order. RI > RBr > RCl > RF
(ii) With the increases in size and mass of halogen atom, the magnitude of van der Waal’s forces increases

  • a) Both statements (i) and (ii) are correct
  • b) Statement (i) is correct and (ii) is incorrect
  • c) Statement (ii) is correct and (i) is incorrect
  • d) Both statement (i) and (ii) are incorrect

Answer: Both statements (i) and (ii) are correct

 

Question: Read the following statements and choose the correct answer

(i) The boiling points of isomeric haloalkanes decrease with increase in branching

ii) Among isomeric dihalobenzenes the para-isomers have higher melting point than their ortho and metaisomers.

(iii) The isomeric dihalobenzene have large difference in their boiling and melting points

(iv) The isomeric dihalobenzene have nearly same boiling point

  • a) (i), (ii) and (iv) are correct
  • b) (ii) and (iv) are correct
  • c) (i) and (iii) are correct
  • d) (i), (ii) and (iii) are correct

Answer: (i), (ii) and (iv) are correct

 

Question:

  • a) (i) and (iii) are correct
  • b) (ii) and (iv) are correct
  • c) (i), (ii) and are correct
  • d) (ii), (iii) and (iv) are correct

Answer: (i) and (iii) are correct

 

Question:

  • a) (i), (iii) and (v) are correct
  • b) (ii), (iii) and (v) are correct
  • c) (i), (iii) and (iv) are correct
  • d) (i), (ii) and (iv) are correct

Answer: (i), (iii) and (v) are correct

 

Question: Read the following statements and choose the correct code

(i) SN2 reaction proceed with complete stereochemical inversion.
(ii) SN1 reaction proceed with recimisation.
(iii) A dextrorotatory compound rotate the plane polarised light to the left.
(iv) A laevorotatory compound rotate the plane polarised light to the right

  • a) TTFF
  • b) TFTF
  • c) TFTT
  • d) FFTT

Answer: TTFF

 

Question:

  • a) TTTF
  • b) TFTF
  • c) TFFT
  • d) TTFF

Answer:  TTTF

 

Question:

  • a) Neither (i), (ii) nor (iii)
  • b) (ii) and (iii)
  • c) (ii) only
  • d) (i), (ii) and (iii)

Answer: Neither (i), (ii) nor (iii)

 

Question:

  • a) A – (s), B – (q), C – (p), D – (r)
  • b) A – (r), B – (p), C – (s), D – (q)
  • c) A – (q), B – (p), C – (s), D – (r)
  • d) A – (r), B – (q), C – (p), D – (s)

Answer: A – (s), B – (q), C – (p), D – (r)

 

Question:

  • a) A – (q), B – (s), C – (p), D – (r)
  • b) A – (q), B – (r), C – (p), D – (s)
  • c) A – (r), B – (p), C – (s), D – (q)
  • d) A – (s), B – (r), C – (p), D – (q)

Answer: A – (q), B – (s), C – (p), D – (r)

 

Question:

  • a) A – (r), B – (p), C – (s), D – (q)
  • b) A – (q), B – (s), C – (p), D – (q)
  • c) A – (r), B – (s), C – (p), D – (q)
  • d) A – (s), B – (p), C – (r), D – (q)

Answer: A – (r), B – (p), C – (s), D – (q)

 

Question:

  • a) A – (q), B – (t), C – (p), D – (s), E – (r)
  • b) A – (r), B – (s), C – (q), D – (p), E – (t)
  • c) A – (p), B – (r), C – (t), D – (q), E – (s)
  • d) A – (q), B – (s), C – (t), D – (r), E – (p)

Answer: A – (q), B – (t), C – (p), D – (s), E – (r)

 

Question:

  • a) A – (r), B – (p), C – (s), D – (q)
  • b) A – (s), B – (r), C – (q), D – (p)
  • c) A – (p), B – (s), C – (q), D – (r)
  • d) A – (q), B – (p), C – (s), D – (r)

Answer: A – (r), B – (p), C – (s), D – (q)

 

Question:

Assertion : SN2 reaction of an optically active aryl halide with an aqueous solution of KOH always gives an alcohol with opposite sign of rotation.
Reason : SN2 reactions always proceed with inversion of configuration.

  • a) Assertion is incorrect, reason is correct
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is incorrect, reason is correct

 

Question:

Assertion : Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason : Alkyl halides are less reactive than acyl halides.

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is incorrect

 

Question:

Assertion : Exposure of ultraviolet rays to human causes the skin cancer, disorder and disrupt the immune system.
Reason : Carbon tetrachloride is released into air it rises to atmosphere and deplets the ozone layer.

  • a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is incorrect, reason is correct
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

 

Question:

Assertion : CHCl3 is stored in dark bottles.
Reason : CHCl3 is oxidised in dark

  • a) Assertion is correct, reason is incorrect
  • b) Assertion is incorrect, reason is correct
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer: Assertion is correct, reason is incorrect

 

Question:

Assertion : CCl4 is not a fire extinguisher.
Reason : CCl4 is insoluble in water.

  • a) Assertion is incorrect, reason is correct
  • b) Assertion is correct, reason is incorrect
  • c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
  • d) Assertion is correct, reason is correct; reason is a correct  explanation for assertion

Answer: Assertion is incorrect, reason is correct

 

Question:

  • a) 3-bromo-1-chlorocyclohexene
  • b) 1-bromo-3-chlorocyclohexene
  • c) 6-bromo-2-chlorocyclohexene
  • d) 2-bromo-6-chlorocyclohex-1-ene

Answer: 3-bromo-1-chlorocyclohexene

 

Question: A compound is formed by substitution of two chlorine for two hydrogens in propane. The number of possible isomeric compounds is

  • a) 5
  • b) 4
  • c) 3
  • d) 2

Answer: 5

 

Question: Which one of the following is not an allylic halide

  • a) 4-Bromobut-1-ene
  • b) 1-Bromobut-2-ene
  • c) 3-Bromo-2-methylbut-1-ene
  • d) 4-Bromopent-2-ene

Answer: 4-Bromobut-1-ene

 

Question: The catalyst used in the preparation of an alkyl chloride by the action of dry HCl on an alcohol is

  • a) Anhydrous ZnCl2
  • b) Anhydrous AlCl3
  • c) FeCl3
  • d) None of these

Answer: Anhydrous ZnCl2

 

Question:

  • a) Racemic mixture
  • b) d-form
  • c) l-form
  • d) Meso form

Answer: Racemic mixture

 

Question: The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methylbutane is

  • a) 1
  • b) 3
  • c) 2
  • d) 4

Answer: 1

 

Question: The number of structural and configurational isomers of a bromo compound, C5H9Br, formed by the addition of HBr to 2-pentyne respectively are

  • a) 2 and 4
  • b) 2 and 1
  • c) 1 and 2
  • d) 4 and 2

Answer: 2 and 4

 

Question: Which of the following reagent produces pure alkyl halides when heated with alcohols?

  • a) SOCl2
  • b) PCl5
  • c) PCl3
  • d) dry HCl

Answer: SOCl2

 

Question: If C5H12 undergoes reaction with chlorine in the presence of sunlight, only one product is formed, than reactant is

  • a) 2, 2,-dimethylpropane
  • b) 2, 3-dimethylpropane
  • c) 3, 3-dimethylpropane
  • d) 1, 3-dimethylpropane

Answer: 2, 2,-dimethylpropane

 

Question:  Hydrocarbon (CH3)3CH undergoes reaction with Br2 and Cl2 in the presence of sunlight, if the reaction with Cl is highly reactive and that with Br is highly selective so no.of possible products respectively is (are)

  • a) 2, 1
  • b) 1, 1
  • c) 2, 2
  • d) 1, 2

Answer: 2, 1

 

Question: Possible major product formed in the reaction of neopentylalcohol with HCl is

  • a) 2 -chloro-2-methylbutane
  • b) 2, 2 -dimethyl 1-chloropropane
  • c) 2 -chloro -3-methylbutane
  • d) 3, chloro -3-methylbutane

Answer: 2 -chloro-2-methylbutane

 

Question: Fluorobenzene (C6H5F) can be synthesized in the laboratory

  • a) from aniline by diazotisation followed by heating the diazonium salt with HBF4
  • b) by heating phenol with HF and KF
  • c) by reacting bromobenzene with NaF solution
  • d) by direct fluorination of benzene with F2 gas

Answer: from aniline by diazotisation followed by heating the diazonium salt with HBF4

 

Question: Which chloride is least reactive with the hydrolysis point of view?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Which will undergo SN2 reaction fastest among the following halogen compounds?

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) B > C > A
  • b) C > B > A
  • c) B > A > C
  • d) A > B > C

Answer: B > C > A

 

Question:  Which one is most reactive towards SN1 reaction

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question:

  • a) SN1 and SN2
  • b) SN2 and SN2
  • c) SN1 and SN1
  • d) None of these

Answer: SN1 and SN2

 

Question:  The organic chloro compound, which shows complete stereochemical inversion during a SN2 reaction, is

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) Primary < secondary < Tertiary
  • b) Primary > Secondary > Tertiary
  • c) Primary > Secondary < Tertiary
  • d) Primary < Secondary > Tertiary

Answer: Primary < secondary < Tertiary

 

Question: The correct order of reactivity of the halides, ethyl chloride (I) iso-propyl chloride (II) and benzyl chloride (III) in SN1 reaction is

  • a) III > II > I
  • b) I > III > II
  • c) I > II > III
  • d) II > I > III

Answer: III > II > I

 

Question: Which of the following represents correct set of ambident nucleophiles?

  • a) CN, NO2
  • b) CN, OH
  • c) OH, RO
  • d) None of these

Answer: CN, NO2

 

Question:  Which of the following statements is correct

  • a) All of the above
  • b) Carbocation formed in SN1 reaction is sp2 hybridized
  • c) SN1 reactions of optically active halides are accompanied by racemisation
  • d) SN2 reactions of optically active halides are accompanied by inversion of configuration

Answer: All of the above

 

Question: The replacement of chlorine of chlorobenzene to give phenol requires drastic conditions, but the chlorine of 2, 4-dinitrochlorobenzene is readily replaced since

  • a) nitro groups withdraw electrons from ortho/para positions of the aromatic ring
  • b) nitro groups donate electrons at meta position
  • c) nitro groups withdraw electrons from the meta position of the aromatic ring
  • d) nitro groups make the aromatic ring electron rich at ortho/para positions

Answer: nitro groups withdraw electrons from ortho/para positions of the aromatic ring

 

Question: A set of compounds in which the reactivity of halogen atom in the ascending order is

  • a) chlorobenzene, vinyl chloride, chloroethane
  • b) chloroethane, chlorobenzene, vinyl chloride
  • c) vinyl chloride, chlorobenzene, chloroethane
  • d) vinyl chloride, chloroethane, chlorobenzene

Answer:  chlorobenzene, vinyl chloride, chloroethane

 

Question:  Aryl halides are extremely less reactive towards nucleophilic substitution than alkylhalides. Which of the following accounts for this ?

(i) Due to resonance in aryl halides.
(ii) In alkyl halides carbon atom in C–X bond is sp2 hybridised whereas in aryl halides carbon atom in C–X bond is sp3 hybridized.
(iii) Due to stability of phenyl cation.
(iv) Due to possible repulsion there are less chances of nucleophile to approach electron rich arenes.

  • a) (i) and (iv)
  • b) (i), (ii) and (iv)
  • c) (i), (ii) and (iii)
  • d) (ii), (iii) and (iv)

Answer: (i) and (iv)

 

Question: The organic compound used as feedstock in the synthesis of chlorofluorocarbons is

  • a) CCl4
  • b) CHCl3
  • c) CH2Cl2
  • d) CH3Cl

Answer: CCl4

 

Question: CCl4 is well known fire extinguisher. However after using it to extinguish fire, the room should be well ventilated. This is because

  • a) It produces phosgene by reaction with water vapour at higher temperatures
  • b) It is toxic
  • c) It is flammable at higher temperatures
  • d) It is corrosive

Answer: It produces phosgene by reaction with water vapour at higher temperatures

 

Question: In which part of the atmosphere, does the freon remain unchanged ?

  • a) Stratosphere
  • b) Mesosphere
  • c) Troposphere
  • d) Thermosphere

Answer: Stratosphere

 

Question: Natural ozone layer is unbalanced due to

  • a) initiation of radical chain by freon
  • b) presence of rain in the atmosphere
  • c) cloudiness of poisonous gases
  • d) All of the above

Answer: initiation of radical chain by freon

 

Question: Exposure of CCl4 causes

  • a) All of these
  • b) Coma, unconsciousness
  • c) Damage to nerve cells
  • d) Liver cancer in human

Answer: All of these

 

Question: Chloroform cannot be prepared from which of the following

  • a) CH3OH
  • b) C2H5OH
  • c) CH3CHO
  • d) None of these

Answer: CH3OH

 

MCQs for Haloalkanes and Haloarenes Chemistry Full Syllabus

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