MDCAT Chemistry Chapter 16 Alcohols and Phenols Online Test With Answers

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MDCAT Chemistry Chapter 16 Alcohols and Phenols Online Test

Sr. # Questions Answers Choice
1 When 2-bromobutane reacts with alcoholic KOH, the reaction is called Chlorination Halogenation Dehydrohalogenation Hydrogenation
2 Which of the following alkyl halides undergoes SN1 reaction fastest Methyl chloride Isobutyl chlorido Ethy l chloride Tertiary butyl chloride
3 A mixture of 1-chloropropane and 2-chloro-propane when treated with alcoholic KOH, gives Prop-2-ene Isopropy lene Propene A mixture of prop-l-ene
4 In elimination reaction i.e, in the formation of alkene, the reactivity of alkyl halide is in the order: CI>Br>I I>Br>Cl Br>CI>I I>CI> Br
5 The species which are produced by heterolytic bond breaking and can act as electron pair donor Free radicals Cations Nucleophiles electrophile
6 Among the following, which one is nucleophile H+ Ca2+ OH- Na+
7 Which is an intermediate in Svl Ethoxide ion Alkene Alkyl halide Carbocation
8 Which one of the following is NOT a nucleophile NH2+ BF3 H2O CH3-
9 The order of reactivitv of alksI halides towards nucleophile is RI>RBr RF>RCI RF>RCI>RBr>RI RI>RBr> RCI>RE RF>RBr>RCI>RI
10
The alkaline hydrolysis of bromoethane shown below gives alcohol as the product: H3C-CH2-Br-------H3C-CH2-OH
The reagent and the condition used in this reaction may be:
 H20 at room temperature KOH in alcohol Ethanol. heat Dilute NaOH(aq) warm
11 When purely alcoholic solution of sodium/potassiumhydroxide and halogenoalkanes are reacted an alkene is formed, what is the mechanism of reaction? Elimination Debromination Dehydration Reduction
12 Correct order for the reactivity ofalkyl halide in S, reactions R-I>R-F>R-CI R-F>R-CI>R-I R-I>R-CI>R-F R-CI>R-I>R-F
13 Correct statement about Nucleophilic substitution bimolecular is Transition state is formed Inversion take place It is two step reacticn Both a &c
14 The reaction C2H5CI + aqueous KOH---------C2H5OH+ KCI is Electrophilic addition Nucleophilic addition Electrophilic substitution Nucleophilic substitution
15 An alkyl halide reacts with NH3 to give Amide Cyanide Amine Aniline
16 Out of monochloro, monobromo and mongiodo derivatives of ethane, the mos reactive compound towards nucleophilic substitution will be C2H5Br C2H5Cl C2H5I All are equally reactive
17 Elimination unimolecular reactions involve Second order kinetics First order kinetics Third order kinetics Zero order kinetics
18 Which of the following is primary alkyl halide IsopropyI halide Sec-butyl halide Tert-buryi halide Neo-pentyl halide
19 Which isomer of C4H9Br will produce 2-methyl propane-2-ol on treatment with aqueous KOH n-butyI bromide Sec-butyI bromide Isobutyl halide Tertiary butyl chloride
20 Which one of the following is not associated with SN2 mechanism 100 % inversion of configuration Tertiar alkyI halides 2nd order kinetics Change of hy bridization from sp³ to sp² in transition state
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