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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
Chemistry
Alkyl Halides and Amines
Elimination Tool:
SN2 reactions can be best carried out with:
NTS 2019
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Markownikoff’s rule is best applicable to the reaction between
NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:
R-X on reaction with alcohols form:
PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:
An SN2 reaction at an asymmetric carbon of a compound always gives:
NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:
How would an ammonium group affect the benzene ring for subsequent reactions?
NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Alkyl Halides that go through SN1 reactions are
Which one of the following is NOT a nucleophile?
NTS 2019
Chemistry
Alkyl Halides and Amines
Elimination Tool:
In general formula of alkyl halide RX, X represents ________
PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Grignard’s reagent on hydrolysis give
Ethylamine can be prepared by the action of bromine and caustic potash on:
NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:
The term “Nucleophile” means:
Which of the following is true about SN2 reactions:
What substrates are required to add a NO2 group to benzene?
NTS 2013
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which of the following Alkyl Halide is most reactive?
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
Chemistry
Alkyl Halides and Amines
Elimination Tool:
atalyst used in the preparation of alkyl halide from alcohol
Reaction of CH3CH2MgBr with ethylene epoxide gives:
NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which of the following is not a nucleophile?
NTS 2010
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which gases are produced when alcohol reacts with thionyl chloride?
PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Alkyl halides can also be obtained by halogenation of ________.
NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Elimination from 2 – bromobutane results in:
NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:
When Grignard reagent reacts with 1120, which of the following is formed
Which type of alkyl halides gives SN2 mechanism?
NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:
RMgX is an organometallic compound, generally known as:
NTS 2012
Chemistry
Alkyl Halides and Amines
Elimination Tool:
(NI13) is a:
Alcbhols react with aqueous acid to produce alkyl halides in presence of
Tertiary alkyl hallides follow which of the following mechanism when attacked by a Nucleophile?
The order of reactivities of the following alkyl halides for an SN2 reaction is:
NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Reaction by Grignard reagent are mostly
The reaction 2RX + 2Na -> RR + 2NaX is an example of:
NUMS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:
If any amino acids contain greater number of NH2, it is:
NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:
In a Beta elimination reaction, the nucleophile attacks a\an:
NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which one the following can act as nucleophile?
Catalyst used in reaction CHCl3+ ½ O2→ COCl2+ HCl is ________ and its nature is _______.
NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:
SN2 can be best carried out with:
NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Ninhydrin reacts with an amino acid to form a product that has the colour:
NUMS 2015
Chemistry
Alkyl Halides and Amines
Elimination Tool:
NH3 (amine) is an example of:
NTS 2015 DUHS and JSMU
Chemistry
Alkyl Halides and Amines
Elimination Tool:
In alkyl halide, the halide ion has charge on it when attached to C-atom.
In general formula of alkyl halide RX, X represents ________
PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Vithich of the following Alkyl Halide is least reactive?
Which catalyst is used in the preparation of alkyl halide from alcohols?
PMC Sample 2
Chemistry
Alkyl Halides and Amines
Elimination Tool:
When Grignard reagent react with water they give as a product
Order of the reactivity of halogens during halogenation of alkanes is:
NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:
In the reaction of m- chlorotoluene with KNH2 in liquid NH3, the major product is:
NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which of the following has the strongest bond?
NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:
If products of a reaction act as a catalyst, such process is called:
NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which alkyl halide has the lowest reactivity for a particular alkyl group?
NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:
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
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Pick correct pair about the difference between E1 and E2 mechanism of methyl bromide forming an alkene.
NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Which of the following bond has highest bond energy value?
PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Zwitter ion is formed when proton goes from:
NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Alkyl halides involving -C-X bond breakage and -C-Nu bond formation simultaneously would follow the mechanism:
PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Grignard reagent when added to dry ice gives:
The only o, p−directing group which is deactivating in nature is:
NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:
All amino acids contain the functional group:
NTS 2017
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Order of reactivity of halogens towards alkanes is:
NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:
Histidine acts as _____ in nature?
NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool: