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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

_____________ reaction is used to synthesize straight alkyl substituted benzenes.

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प्रश्न

_____________ reaction is used to synthesize straight alkyl substituted benzenes.

पर्याय

  • Etard

  • Rosenmund reduction

  • Stephen reaction

  • Wolf Kishner reduction

MCQ
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उत्तर

Wolf Kishner reduction reaction is used to synthesize straight alkyl substituted benzenes.

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पाठ 12: Aldehydes, Ketones and Carboxylic acids - Multiple choice questions

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
पाठ 12 Aldehydes, Ketones and Carboxylic acids
Multiple choice questions | Q 2

संबंधित प्रश्‍न

Addition of sodium bisulphite to ethanol is ____________ type of reaction.


Write another name of disproportionation reaction?


Explain haloform reaction with suitable example.


Write a reaction to distinguish acetaldehyde from acetone.


Identify A in the following reaction.

\[\ce{A + CH3MgBr ->[Ether] complex ->[H3O+] (CH3)3C - OH}\]


Fehling solution is ____________.


Compounds of general formula, are called ____________.

\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR'}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{H}\phantom{....}\ce{OR'}\phantom{} \end{array}\]


The number of α-H atoms in butanal is ____________.


The first oxidation product of secondary alcohols is ____________.


Predict the product Z in the following series of reactions.

\[\ce{Ethanoic acid ->[PCl5] X ->[C6H6][Anhydrous AlCl3] Y ->[i) CH3MgBr][H3O^+] Z}\]


Assertion: 2, 2-dimethyl propanoic acid does not give HVZ reaction.

Reason: 2-2, dimethyl propanoic acid does not have α-hydrogen atom.


\[\ce{Benzoic acid ->[i) NH3][ii) \Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\] ‘C’ is:


Identify the product formed in the reaction.


Assertion: p-N, N-dimethyl amino benzaldehyde undergoes benzoin condensation

Reason: The aldehydic (−CHO) group is meta directing.


Identify X and Y.

\[\ce{CH3COCH2CH2COOC2H5 ->[CH3MgBr] X ->[H3O^+] Y}\]


How will you convert benzaldehyde into the following compound?

α-hydroxy phenyl acetic acid


What is the action of HCN on ethanal?


How is the following conversion effected Hex-3-yne into hexan-3-one?


How propanal is converted into propane.


Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of ______.


Which of the following is most reactive towards the addition reaction of hydrogen cyanide to form the corresponding cyanohydrin?


Aldehydes are readily oxidised to yield carboxylic acids but ketones are inert to oxidation. Which is the most likely explanation regarding this difference in reactivity?


Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.


Identify B in the following reaction:

\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]


Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.


How will you prepare Acetic anhydride from acetic acid ?


How will you prepare acetic anhydride from acetic acid?


What is IUPAC name for

  ?


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