Aldehydes , ketones and Carboxylic acids.

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A Compound has molecular formula C₃H₆O , react with 2,4,DNP and gives yellow ppt of iodoform with I₂ and NaOH, but does not form silver mirror with tollens reagent . identify the compound *

1 point

propanone

propanal

propanol

methylethylether

An organic compound with the molecular formula C9H10O forms 2, 4DNP derivative, reduces Tollens’ reagent and undergoes the Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzene carboxylic acid. Identify the compound. *

1 point

4-ethylbenzaldehyde

2-ethylbenzaldehyde

3-ethylbenzaldehyde

1-phenylpropanone

Arrange the following carbonyl compounds in increasing order of their reactivity in nucleophilic addition reaction. Benzaldehyde, p-tolualdehyde, p-nitrobenzaldehyde, acetophenone *

1 point

(a) p-Tolualdehyde < Acetophenone< Benzaldehyde<p-Nitrobenzaldehyde

(a) Acetophenone > p-Tolualdehyde > Benzaldehyde > p-Nitrobenzaldehyde

(a) Acetophenone< p-Tolualdehyde <Benzaldehyde<p-Nitrobenzaldehyde

(a) Acetophenone< p-Tolualdehyde<p-Nitrobenzaldehyde <Benzaldehyde

Other:

If formaldehyde and KOH are heated , then we get potassium formate and *

1 point

Methane

Methanol

Ethanol

Ethane

Reaction of acetyl chloride with Pd/BaSO4 to give acetaldehyde is an example of *

1 point

Cannizzaro reaction

Rosenmund reaction

Aldol condensation

Stephen reaction

The reagent (s)which can be used to distinguish Acetone and Propanal *

1 point

Iodine + NaOH

NaHCO₃

Sodium metal

Ferric Chloride

Required

In which of the following, the number of carbon atoms , doesnot remain same when the carboxylic acid is obtained by oxidation. *

1 point

Acetaldehyde

Acetone

Formamldehyde

Benzaldehyde.

Which of the following give brisk effervescence of carbon dioxide with sodium bicarbonate *

1 point

Phenol

Ethanol

Benzoic acid

Acetone

Reagent which converts propanone to prapane *

1 point

Zn(Hg)/ HCl

Hydrazine and KOH

Both

None

Which of the following compound will undergo self aldol condensation with dilute NaOH *

1 point

Methnal

Ethanal

Benzaldehyde

TriChloroacetaldehyde

Aspirin is an acetylation product of *

1 point

Orthohydroxy benzoic acid

Metahydroxy benzoic acid

Parahydroxybenzoic acid

All the above

Iodoform test is not given by *

1 point

Acetone

Ethanol

Ethanal

Propanal

The product formed in Aldol condensation is *

1 point

Beta hydroxy aldehyde or ketone

Alpha hydroxy aldehyde or ketone

Gama hydroxy aldehyde or ketone

A betahydroxy acid

Which of the following reaction will not result in the formation of carbon - carbon bonds *

1 point

Reimer - Tieman reaction

Cannizzaro reaction

Aldol condensation

Friedal crafts reaction

Assertion (A) : acetaldehyde reacts with dilute NaOH to form Betahydroxy butanal Reason (R) : Due to presence of Alpha hydrogen acetaldehyde gives aldol condensation reaction *

1 point

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not the correct explanation of A

A is correct but R is wrong

A is wrong but R is correct.

Assertion (A): Propanal and propanone are distinguished by Iodoform test. Reason (R): propanal due to presence of CH3CO gives Iodoform test , where as propanone don't . *

1 point

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not the correct explanation of A

A is correct but R is wrong

A is wrong but R is correct

Assertion (A): chloroacetic acid is weaker acid than Acetic acid. Reason (R) : due to -i effect of Cl, Acetic strength increases . *

1 point

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not the correct explanation of A

A is correct but R is wrong

A is wrong but R is correct

Which of the following carboxylic acid gives silver mirror with Tollens reagent *

1 point

Formic acid

Acetic acid

Benzoic acid

Citric acid

The weakest acid amongst the following isH *

1 point

a) ClCH₂COOH

b) CCl₃COOH

CH₃COOH

CHCl₂COOH

which of the following compound will give aldol condensation reaction *

0 points

CCl₃CHO

HCHO

C₆H₅CHO

CH₃COCH₃

Reaction of acetic acid with one mole of chlorine in presence of red phosphorus gives compound A . identify the compound A CH₃COOH + Cl₂ → A +HCl *

1 point

ClCH₂COH

ClCH₂COCl

CCl₃CHO

ClCH₂COOH

how will you convert (Toluene )methylbenzene to benzoic acid *

1 point

Reaction of toluene with CrO₂Cl₂ (chromylchloride) followed by hydrolysis

Reaction of Toluene with CrO₃ and acetic anhydride followed by hydrolysis

Reaction of Toluene with two moles of chlorine followed by hydrolysis .

all the above

name the reagent which is used to convert butan-1-ol to butanal *

1 point

acidified potassium permanganate

acidified potassiumdichromate

pcc

red hot copper tube

which of the follwing forms silver mirror with tollens reagent and brick red precipitate with Fehilings A and B *

1 point

pentanal

pentan-2-one

pentan-3-one

pentanoic acid

reaction of acetic acid (CH₃COOH) with PCl₅ gives Compound 'A '. Compund A on further reaction with Pd/BaSO₄ gives compound B. identify compounds A and B *

1 point

A is ClCH₂COCl and B is CCl₃CHO

A is CH₃CHO and B is CH₃COCl

A is CH₃COCl and B is CH₃CHO

ClCH₂CHO and ClCH₂COOH

which compound is most reactive towards reaction with HCN *

1 point

cyclohexanone

2-methylcyclohexanone

2,2-dimethylcyclohexanone

2,2,6-trimethylcyclohexanone

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