Chemistry Practice MCQs Chapter 10 Class 12


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Chemistry Ch 10 Class 12 Alkyl Halides and Amines

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The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

NUMS 2016
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Reaction of CH3CH2MgBr with ethylene epoxide gives:

NUMS 2019 Reconduct
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Zwitter ion is formed when proton goes from:

NTS 2018
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Which of the following is not a nucleophile?

NTS 2010
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R-X on reaction with alcohols form:

PMC 2020
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Tertiary alkyl  hallides follow which of the following mechanism when attacked by a Nucleophile?

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RMgX is an organometallic compound, generally known as:

NTS 2012
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Which of the following has the strongest bond?

NUMS 2019 Cancelled
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Which of the following Alkyl Halide is most reactive?

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Pick correct pair about the difference between E1 and E2 mechanism of methyl bromide forming an alkene.

NUMS 2019 Cancelled
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atalyst used in the preparation of alkyl halide from alcohol

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A compound X (C4H9Br) undergoes the following reactions:

C4H9Br NaOH(aq)/heat > C4H10O Cr2O7(2-), H+(aq)/ heat> C4H8O.

What is X?

NUMS 2018
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The term “Nucleophile” means:

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When Grignard reagent react with water they give as a product

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Grignard reagent when added to dry ice gives:

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SN2 reactions can be best carried out with:

NTS 2019
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Elimination from 2 – bromobutane results in:

NUMS 2018
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Ninhydrin reacts with an amino acid to form a product that has the colour:

NUMS 2015
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Which catalyst is used in the preparation of alkyl halide from alcohols?

PMC Sample 2
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In general formula of alkyl halide RX, X represents ________

PMC Sample 2
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Ethylamine can be prepared by the action of bromine and caustic potash on:

NUMS 2017
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Which one of the following is NOT a nucleophile?

NTS 2019
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If any amino acids contain greater number of NH2, it is:

NUMS 2019 Cancelled
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All amino acids contain the functional group:

NTS 2017
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In general formula of alkyl halide RX, X represents ________

PMC Sample 1
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Catalyst used in reaction CHCl3+ ½ O2→ COCl2+ HCl is ________ and its nature is _______.

NTS 2014
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NH3 (amine) is an example of:

NTS 2015 DUHS and JSMU
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Histidine acts as _____ in nature?

NUMS 2019 Cancelled
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Which one the following can act as nucleophile?

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How would an ammonium group affect the benzene ring for subsequent reactions?

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What substrates are required to add a NO2 group to benzene?

NTS 2013
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SN2 can be best carried out with:

NUMS 2015
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Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
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Which gases are produced when alcohol reacts with thionyl chloride?

PMC Sample 1
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An SN2 reaction at an asymmetric carbon of a compound always gives:

NTS 2014
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Markownikoff’s rule is best applicable to the reaction between

NUMS 2018
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Which of the following is true about SN2 reactions:

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In the reaction of m- chlorotoluene with KNH2 in liquid NH3, the major product is:

NUMS 2016
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Grignard’s reagent on hydrolysis give

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The reaction 2RX + 2Na -> RR + 2NaX is an example of:

NUMS 2017
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(NI13) is a:

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Alkyl Halides that go through SN1 reactions are

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Which type of alkyl halides gives SN2 mechanism?

NUMS 2019 Reconduct
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Alkyl halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow the mechanism:

PMC 2020
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Order of reactivity of halogens towards alkanes is:

NUMS 2019 Reconduct
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The order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
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Ethyl iodide and n-propyl iodide are allowed to undergo Wurtz reaction. The alkane which will not be obtained in this reaction is:

NUMS 2016
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The only o, p−directing group which is deactivating in nature is:

NTS 2014
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If products of a reaction act as a catalyst, such process is called:

NTS 2014
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Alkyl halides can also be obtained by halogenation of ________.

NUMS 2018
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Reaction by Grignard reagent are mostly

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Which of the following bond has highest bond energy value?

PMC Sample 1
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Order of the reactivity of halogens during halogenation of alkanes is:

NUMS 2019 Reconduct
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Vithich of the following Alkyl Halide is least reactive?

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In a Beta elimination reaction, the nucleophile attacks a\an:

NUMS 2015
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When Grignard reagent reacts with 1120, which of the following is formed

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Alcbhols react with aqueous acid to produce alkyl halides in presence of

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In alkyl halide, the halide ion has charge on it when attached to C-atom.

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