IIT JEE/IIT JEE Aldehydes And Ketones Sample Test,Sample questions

Question:
2-Pentanone and 3-Methylbutan-2-one are

1.optical isomers

2.geometrical isomers

3.metamers

4.tautomers.


Question:
A mixture of acetic acid and formic acid is passed over MnO at 303 degreeCentigrade. The product obtained is

1.benzaldehyde

2.acetaldehyde

3.methane

4.All the above


Question:
Acetaldehyde when treated with ethyl alcohol in the presence of dil HCl gives

1.formaldehyde

2.crotonaldehyde

3.propanal

4.acetal


Question:
Acetone when distilled with conc. sulphuric acid gives

1.diacetone alcohol

2.mesitylene

3.mesityl oxide

4.toluene


Question:
Aromatic aldehydes react with primary amines to form

1.Amino acids

2.Schiffs base

3.Pyrosole

4.Pyridine.


Question:
Benzaldehyde and malonic acid react to give

1.Ethanal

2.Crotonic acid

3.Cinnamaldehyde

4.Cinnamic acid.


Question:
Bimolecular reduction of acetone gives

1.Diacetone amine

2.Pinacol

3.Chloretone

4.Propane.


Question:
Calcium acetate on heating gives

1.ethane

2.pentane

3.acetic anhydride

4.acetone


Question:
Calcium formate of heating gives 

1.formic acid

2.banzaldehyde

3.methanoic

4.anhydrideformaldehyde


Question:
Calcium salt of propionic acid is distilled in dry conditions. The product formed will show

1.Fehling test positive

2.Iodoform test negative

3.Victor Meyer test positive

4.Tollens test positive.


Question:
Cannizaro reaction involves

1.Oxidation of aldehydes

2.Oxidation as well reduction of aldehyde molecule

3.Reduction of aldehyde molecule

4.Rearrangement in aldehyde molecule.


Question:
Clemmensens reduction will convert cyclobutanone to

1.Cyclobutanol

2.Cyclobutyraldehye

3.n-Butane

4.Cyclobutane.


Question:
Ehtananl is treated with ammonia and adduct formed is warmed. The final product is

1.Acetaldehyde ammonia

2.Acetaldimine

3.Tetramethylene hexamine

4.Ethyl amine.


Question:
Etards reaction involves the preparation of benzaldehyde from

1.Toluene

2.Ethyl benzene

3.Benzoyl chloride

4.Sodium benzoate.


Question:
Ethylidene chloride is hydrolysed with aqueous NaOH. The product formed is

1.Ethanol

2.Ethylchloride

3.Ethanal

4.Ehtane.


Question:
Hypnone is commercial name of

1.Methyl phenyl ketone

2.Acetone

3.Benzopheneone

4.Diethyl ketone.


Question:
In order to prepare acetone from acetyl chloride in one step which of the following reagent will be best?

1.HI

2.Diethyl candmium

3.Methyl magnesium bromide

4.Dimethyl cadmium.


Question:
IUPAC name of crotanaldehyde is

1.2 methyl propanol

2.isobutynaldehyde

3.2 Butanal

4.1 Butanal


Question:
m-Chlorobenzaldehyde on reaction with conc. KOH at room temperature gives

1.Potassium meta chlorobenzoate and m-Hydroxy benzaldehyde

2.m-Hydroxybenzaldehyde and m-chlorobenzyalcohol

3.m-Chlorobenzyl alcohol and m-Hydroxy benzylalcohol

4.Potassium m-chlorobenzoate and m-Chlorobenzylalcohol.


Question:
Mesitylene is

1.1 3 4 trimethyl benzene

2.1 3 5 trimethyl benzene

3.2 2 4 trimethyl benzene

4.2 3 5 trimethyl benzene


Question:
Methyl cyanide is dissolved in ethyl formate and reduced with stannous chloride and hydrochloric acid. The product is then steam distilled. The distillate will be

1.ethyl amine

2.formaldehyde

3.methyl alcohol

4.acetaldehyde


Question:
On heating a mixture of calcium formate and calcium propanoate??is obtained

1.propanal

2.butanone

3.propane

4.propanoic acid


Question:
One mole of an organic compound is found to require only 0.5 mole of oxygen to produce an acid. Which class of compound does the starting meterial belong to ?

1.Alcohol

2.Aldehyde

3.Ether

4.Ketone


Question:
Oxidation of secondary alcohol to ketone with aluminium tert. butanide is known as

1.Meerwein Pondorff Verley reaction

2.Oppenauer oxidation

3.Kolbes reaction

4.Stephens reaction


Question:
Oximes are isomeric with

1.acids

2.ketones

3.amides

4.aldehydes


Question:
Pinacolone is

1.1-phenyl-2-propanone

2.3 3-Dimethyl-2-butanone

3.2 3-dimethyl-2 3-butanediol

4.2 3-Dimethyl but-2-ene.


Question:
Shape of the carboxyl group is

1.tetrahedral

2.pyramidal

3.planar triangular

4.octahedral


Question:
The adduct of ethyl magnesium iodide and methanal is hydrolysed. The final product is

1.1-Propanol

2.2-Propanol

3.Ethanol

4.2-Chlor1-propanol.


Question:
The compound having least solubility in water isMethanalAcetone

1.Methanal

2.Acetaldehyde

3.Acetone

4.Acetophenone.


Question:
The main point of similarity between Etards reaction and Vilsmeyer reaction is

1.Starting reagent is benzene

2.Final product in both is benzaldehyde

3.Oxidising agent in both is chromyl chloride

4.Both form ketone as product.


Question:
The product of chemical reaction between benzaldehyde and alcoholic KCN is commonly called

1.Aldol

2.Acetal

3.Phoron

4.Benzoin.


Question:
The reaction of acetaldehyde and acetone in the presence of dilute alkali is called

1.Crossed aldol condensation

2.Perkins condensation

3.aldol condensation

4.benzoin condensation


Question:
Trimer of formaldehyde is known as

1.metaformaldehyde

2.trioxymethylene

3.trioxane

4.All the above


Question:
Vinyl alcohol and ehtanal are

1.Metamers

2.Tautomers

3.Position isomers

4.Chain isomers.


Question:
When benzyl methyl ketone is allowed to react with ethylene glycol in benzene the product formed is

1.2-Benzyl methyl dimethylene-1 3-dioxolane

2.Benzyl glycolone

3.Benzyl alcohol

4.1 3-Dioxolactic acid


Question:
Which aming the following gives positive iodoform test as well as positive Fehling testAcetophenone.

1.Propanal

2.Ethanal

3.Propanone

4.Acetophenone.


Question:
Which ketone will form 3-ethylpentan-3-ol on treatment with ethyl magnesium bromide.

1.Acetone

2.Ethylmethyl ketone

3.Acetophenone

4.Diethyl ketone.


Question:
Which of following possesses highest value of dipole moment ?

1.1-Butene

2.Butanal

3.Trans 2-Butene

4.2-Butanone.


Question:
Which of the following aldehyde will undergo Cannizzaros reaction?

1.Ethanal

2.2-Methylpropanal

3.2 2-Dimethylpropanal

4.Phenylacetaldehyde.


Question:
Which of the following can reduce Tollens reagent but no Fehlings soln.?

1.Benzaldehyde

2.Acetaldehyde

3.Formaldehyde

4.Acetone


Question:
Which of the following compound will not undergo Cannizzaros reaction ?

1.Benzaldehyde

2.2 2-Dimethyl propanal

3.Formaldehyde

4.Phenylethanal.


Question:
Which of the following compounds will react with ethanolic KCN?

1.Ethane

2.Acetone

3.Chlorobenzene

4.Benzaldehyde.


Question:
Which of the following does not have alpha hydrogen?

1.Formaldehyde

2.Acetone

3.Benzaldehyde

4.Phenyl acetaldehyde


Question:
Which of the following does not reduce Fehling?s solution?

1.Formaldehyde

2.Paraldehyde

3.Propanal

4.Acetaldehyde


Question:
Which of the following does not undergo benzoin condensation ?

1.Benzene caebaldehye

2.p-Toluene carbaldehye

3.Phenylethanal

4.4-Methoxybenzaldehyde.


Question:
Which of the following groups can occur at the end of the chain only?

1.Ether

2.Alcohol

3.Aldehyde

4.Ketone


Question:
Which of the following is a hypnotic?

1.Acetaldehyde

2.Metaldehyde

3.Paraldehyde

4.None of these


Question:
Which of the following is a sedative?

1.Paraformaldehyde

2.Benzaldehyde

3.Metaldehyde

4.Paraldehyde


Question:
Which of the following is capable of acting as hypnotic ?

1.Acetaldehyde

2.Metaldehyde

3.Paraldehyde

4.Formaldehyde.


Question:
Which of the following is enolisable.

1.Benzophenone

2.2 4-Pentanedione

3.Phenyl-t butyl ketone

4.All of the above.


Question:
Which of the following is liquid at room temperature?

1.Metaldehyde

2.Trioxane

3.Polyoxymethylenes

4.Paraldehyde


Question:
Which of the following is obtained from pyryligenenous acid?

1.Benzaldehyde

2.Acetaldehyde

3.Formaldehyde

4.Acetone


Question:
Which of the following is the most reactive?

1.Propanal

2.Propanone

3.Propane

4.Methoxy ethane


Question:
Which of the following is used in medicine as a hypnotic?

1.Paraformaldehyde

2.Acetaldehyde

3.Methaldehyde

4.Paraldehyde


Question:
Which of the following ketone will not respond to iodoform test?

1.3-Methylbutan-2-one

2.Ethyl isopropylketone

3.Methyl phenyl ketone

4.Dimethyl ketone.


Question:
Which of the following name is associated with the reduction of aldehyde/ketone by using the reagent aluminium isopropoxide ?

1.wolff Kishner

2.Meerwein Ponndroff-Verley

3.Wagner-Meerwein

4.Michael.


Question:
Which of the following will give an aldehyde on oxidation?

1.Methoxy ethane

2.2 methanal

3.2 methyl propane

4.1 propanal


Question:
Which of the following will not form when the mixture of calcium acetate and calciumformate is distilled ?

1.Acetone

2.Propanal

3.Ethanal

4.Methanal.


Question:
Which of the following will not reduce Tollens reagent?

1.Acetone

2.Acetaldehyde

3.Formaldehyde

4.Benzaldehyde


Question:
Which of the following will show disproportionation when treated with 50% aqueous NaOH?

1.Benzyl alcohol

2.Ethanal

3.Phenyl ethanal

4.m-nitro benzaldehyde.


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