मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

A primary alkyl halide would prefer to undergo ______. - Chemistry

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प्रश्न

A primary alkyl halide would prefer to undergo ______.

पर्याय

  • SN1 reaction

  • SN2 reaction

  • α–Elimination

  • Racemisation

MCQ
रिकाम्या जागा भरा
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उत्तर

A primary alkyl halide would prefer to undergo SN2 reaction.

Explanation:

SN2 type reactions (i.e. bimolecular nucleophilic substitution) proceed in one step and the rate of reaction depends on concentration of alkyl halide as well as nucleophile i.e. r = k[RX][Nu]. It is a second-order reaction. During SN2 reaction, inversion in configuration occurs (viz. starting with dextrorotatory halide a laevorotatory product is obtained and vice-versa).

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पाठ 10: Haloalkanes and Haloarenes - Exercises [पृष्ठ १३७]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 10 Haloalkanes and Haloarenes
Exercises | Q I. 16. | पृष्ठ १३७

संबंधित प्रश्‍न

How do you convert the following:

Ethanol to propanenitrile


Out of , which is more reactive towards SN1 reaction and why?


Write the structures of A, B and C in the following:


Write the structure of the major organic product in the following reaction:

\[\ce{CH3CH(Br)CH2CH3 + NaOH ->[water]}\]


The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.


What happens when ethyl chloride is treated with aqueous KOH?


Identify 'A' in the following reaction -

(a) 2- Bromo-2 methylbutane

(b) 1 -Bromo-2,2-dimethylpropane

(c) 1 - Bromo - 3 -methylbutane

(d) 1 - Bromo- 2 -methylpropane


Which compound in the following pair reacts faster in SN2 reaction with OH?

  1. CH3Br or CH3
  2. CH3Cl, (CH3)3CCl

Which of the following is optically inactive?


Which of the following pairs is/are correctly matched?

  Reaction Product
I RX + AgCN RNC
II RX + KCN RCN
III RX + KNO2 \[\begin{array}{cc}
\phantom{.......}\ce{O}\\
\phantom{.....}/\\
\ce{R - N}\phantom{....}\\
\phantom{.....}\backslash\backslash\\
\phantom{.......}\ce{O}
\end{array}\]
IV RX + AgNO2 \[\ce{R-O-N=O}\]

Which of the following compounds is optically active?


An organic molecule necessarily shows optical activity if it ____________.


SN1 reaction of alkyl halides lead to ___________.


The increasing order of reactivity towards SN1 mechanism is:

(I) \[\begin{array}{cc}
\ce{CH3-CH-CH2-CH3}\\
|\phantom{........}\\
\ce{CH3}\phantom{.....}
\end{array}\]

(II) CH3CH2CH2Cl

(III) P–CH3O–C6H4–CH2Cl


Which of the following alkyl halides will undergo SN1 reaction most readily?


Which of the following is the definition of chirality?


Which one is the correct order of nucleophilic strength (pKa) of following nucleophiles?


Inversion of configuration occurs in ______.


Convert bromoethane to propanamine.


An organic compound A with the molecular formula (+) C4H9Br undergoes hydrolysis to form (+) C4H9OH. Give the structure of A and write the mechanism of the reaction.


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