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Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes MCQs | Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Objective Type Questions and Answers

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Free download in PDF Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Chloropicrin is formed by the reaction of
[A] steam on carbon tetrachloride
[B] nitric acid on chlorobenzene
[C] chlorine on picric acid
[D] nitric acid on chloroform
Answer: nitric acid on chloroform
(2) Fitting reaction can be used to prepare
[A] Toluene
[B] Acetophenon
[C] Diphenyl
[D] Chlorobenzene
Answer: Diphenyl
(3) In the above reaction, the product D is
[A] Propane
[B] 2, 3-Dimethylbutane
[C] Hexane
[D] Allyl bromide
Answer: 2, 3-Dimethylbutane
(4) Fitting reaction can be used to prepare
[A] Toluene
[B] Acetophenon
[C] Diphenyl
[D] Chlorobenzene
Answer: Diphenyl
(5) Identify the end product (C) in the following sequence:
[A]
[B]
[C]
[D]
Answer:
(6)
In the above reaction, the product D is
[A] Propane
[B] 2, 3-Dimethylbutane
[C] Hexane
[D] Allyl bromide
Answer: 2, 3-Dimethylbutane
(7) Identify X and Y in the following sequence
[A] X = KCN, Y = LiAlH4
[B] X = KCN, Y = H3O+
[C] X = CH3Cl, Y = AlCl3 HCl
[D] X = CH3NH2, Y = HNO2
Answer: X = KCN, Y = LiAlH4
(8) In the following sequence of reactions:
[A] n-propylamine
[B] isopropylamine
[C] ethylamine
[D] ethylmethylamine
Answer: ethylmethylamine
(9)
[A]
[B]
[C]
[D]
Answer:
(10) Identifay Z in the series
[A] C2H5I
[B] C2H5OH
[C] CHI3
[D] CH3CHO
Answer: CHI3
(11) Of the options give, the one statement about trichloromethane (Chloroform) that is correct is ____
[A] It should be stored in a well ventilated place, exposed to sunlight.
[B] In the presence of air or light, chloroform is slowly oxidized into a poisonous compound phosgene.
[C] Chloroform gets reduced with zinc dust and water to form Methylene chloride.
[D] Chloroform is converted into carbon tetrachloride on warming with silver powder.
Answer: Chloroform is converted into carbon tetrachloride on warming with silver powder.
(12) Aryl chlorides and bromides can be easily prepared by ____ of arenes with chlorine and bromine respectively in the presence of Lewis acid catalysts like iron or iron (III) chloride.
[A] Electrophilic addition
[B] Electrophilic substitution
[C] Nucleophilic addition
[D] Nucleophilic substitution
Answer: Electrophilic substitution
(13) At room temperature ethyl chloride, methyl bromide, ethyl chloride and some chlorofluoromethanes exist as____.
[A] Liquid
[B] Solid
[C] Gas
[D] Some of them solid and other liquid
Answer: Gas
(14) When we go down the group 17 in the periodic table, the one option that is incorrect is ____.
[A] size of the halogen atoms increases
[B] change in size of halogen atom results in increase in carbon-halogen bond length
[C] change in size of halogen atom results in carbon-halogen bond enthalpy (kJ mol-1) decrease
[D] reactivity of halogens increases
Answer: reactivity of halogens increases
(15) Triodomethane (Iodoform) was earlier used as an
[A] analgesic
[B] antiseptic
[C] antihistamine
[D] antibiotic
Answer: antiseptic
(16) The chloroflurocarbon compounds of methane and ethane are collectively known as ____
[A] haloalkanes
[B] alkyl halides
[C] Freons
[D] DDT
Answer: Freons
(17) Haloalkanes react with KCN to form__________ as main product, but with AgCN, it form _______ as the chief product.
[A] alkyl cyanides; isocyanides
[B] isocyanides; alkyl cyanides
[C] isocyanides; isocyanides
[D] alkyl cyanides; alkyl cyanides
Answer: alkyl cyanides; isocyanides
(18) In Fittig reaction, aryl halides when treated with ____ in dry ether give an analogous compound in which two aryl groups are joined together.
[A] Potassium
[B] Magnesium
[C] Sodium
[D] Calcium
Answer: Sodium
(19) Of the following, ____________ is not a monohalo-organic compound.
[A] CH2=CHCl
[B] CH2=CHCH2Br
[C] CH2Cl2
[D] CH3CH2CH2F
Answer: CH2Cl2
(20) The metal present in Grignard reagents is___.
[A] Sodium
[B] Potassium
[C] Magnesium
[D] Calcium
Answer: Magnesium

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