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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

The following compounds will give positive Fehling’s test. - Chemistry

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प्रश्न

The following compounds will give positive Fehling’s test.

पर्याय

  • Propanone

  • Pentan-3-one

  • Butanone

  • Butanal

MCQ

उत्तर

Butanal

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Chemical Properties of Aldehydes and Ketones
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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 7

संबंधित प्रश्‍न

Write reactions for the action of the following reagents on p-chlorobenzaldehyde.

Phenyl hydrazine


Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?


Which of the following is Schiff's reagent?


In Clemmensen's reaction, ketone gives ____________.


Following reaction is an example of ____________.

\[\ce{Benzaldehyde ->[Nitration] {m}-Nitrobenzaldehyde}\]


Which of the following carbonyl compounds does NOT undergo aldol condensation?


Which of the following does NOT give yellow precipitate when reacted with (NaOH + I2) mixture?


The formation of cyanohydrin from acetone is an example of ____________.


\[\ce{CH2 = CH2 ->[i) O3][ii) Zn/H2O] X ->[NH3] Y}\] ‘Y’ 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: p-N, N-dimethyl amino benzaldehyde undergoes benzoin condensation

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


Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid.


Identify A, B and C.


Identify A, B, C and D.

\[\ce{ethanoic acid ->[SOCl2] A ->[Pd/BaSO4] B ->[NaOH] C ->[][\Delta] D}\]


How will you convert benzaldehyde into the following compound?

Benzoic acid


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


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


How is the following conversion effected phenyl methanal into benzoic acid?


Complete the following reaction.

\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]


How will you prepare benzoic acid from toluene?


Which of the following compounds will undergo self-aldol condensation in the presence of cold dilute alkali?


Identify the reaction in which carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with zinc-amalgam and cone. HCI.


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?


A carbonyl compound A having molecular formula C5H10O forms crystalline precipitate with sodium bisulphate and gives positive iodoform test. A does not reduce Fehling solution. Identify A.


How are the following compound obtained from alkyne?

Acetone


Write reactions when phenol reacts with Concentrated HNO3


How will you prepare Acetic anhydride from acetic acid ?


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


How will you prepare Acetic anhydride from acetic acid.


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