NEET Test Series-2021 to 2022/NEET Chemistry MCQS -Haloalkanes and Haloarenes MCQ Sample Test,Sample questions

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Question: 
 A solution of (+) 2-chloro-2-phenylethane in toluene racemises slowly in the presence of a small amount of SbCl5, due to the formation of

1.carbanion

2.carbene

3.free radical

4.carbocation

Posted Date:-2021-03-08 07:06:33

Question: 
 The decreasing order of boiling points of alkyl halides is

1.RF > RCl > RBr > RI

2.RBr > RCl > RCl > RF

3.RI > RBr > RCl > RF

4.RCl > RF > RI > RBr

Posted Date:-2021-03-08 07:06:33

Question: 
 The reaction of tert butyl bromide with sodium methoxide produces mainly

1.isobutane

2.isobutylene

3.tert-butyl methyl ether

4.sodium tert butoxide

Posted Date:-2021-03-08 07:06:33

Question: 
-Cl bond of chlorobenzene in comparison to C-Cl bond in methyl chloride is

1.Longer and weaker

2.Shorter and weaker

3.Shorter and stronger

4.Longer and stronger

Posted Date:-2021-03-08 07:06:33

Question: 
 A Grignard reagent may be made by reacting magnesium with

1.Methyl amine

2.Diethyl ether

3.Ethyl iodide

4.Ethyl alcohol

Posted Date:-2021-03-08 07:06:33

Question: 
CH3CH2CH2Br + NaCN → CH3CH2CH2CN + NaBr, will be fastest in

1.ethanol

2.methanol

3.N, N-dimethylformamide

4.Water

Posted Date:-2021-03-08 07:06:33

Question: 
 Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?

1. Benzyl Chloride

2.Ethyl chloride

3.Chlorobenzene

4.Isopropyl chloride

Posted Date:-2021-03-08 07:06:33

Question: 
Phosgene is commonly known as

1.thionyl chloride

2.carbonyl chloride

3.carbon dioxide and phosphine

4.phosphoryl chloride

Posted Date:-2021-03-08 07:06:33

Question: 
The increasing order of nucleophilicity would be?

1. Cl– < Br– < I–

2. I– < Cl– < Br–

3. Br– < Cl– < F–

4. I– < Br– < Cl–

Posted Date:-2021-03-08 07:06:33

Question: 
Which of the following is most reactive towards SN1 reaction?

1.C6H5C(CH3)C6H5Br

2.C8H5CH2Br

3. C6H5CH(C6H5)Br

4. C6H5CH(CH3)Br

Posted Date:-2021-03-08 07:06:33

Posted on by R4R Team

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