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MCQ Oraganic Chemistry Quiz-Haloalkane

Which of the following is an example of vic-dihalide?

1'1, -dichloroethane

Ethylidene chloride

1,2 -dichloroethane

Which of the following statement is correct -

Among isomeric alkyl halides the decrease in boiling point 1º > 2º > 3º

Decreasing order of density of alkyl halides is RI > RBr > RCI > RF

All are correct

The stability order of alkyl halides is RF > RCl > RBr >RI

Chlorobenzene is -

More reactive than ethyl bromide

Less reactive than benzyl chloride

As reactive as methyl chloride

The reaction of silver carboxylates with bromine dissolved in carbon tetrachloride is called -

Hofmann reaction

Borodine reaction

Borodine - Hunsdiecker reaction

The Reagent used in the gattermann reaction for the preparation of aryl halide

Cu/HCl

CuCl/HCl

HNO2

C2H5Cl + AgF ------- C2H5 F + AgCl The above reaction is called -

Swart Rxn

Wurtz

Hunsdiecker

Benzene reacts with methyl chloride in the presence of anhydrous AlCl3 to give

methylbenzene

No reaction

n-Propylbenzene

In Finkelstein Reaction, which reactants are used

KI + ethanol

NaI + acetone

NaI + ethanol

Which is most reactive for SN2 reactions?

C2H5-I

CH3-Br

C3H7-I

Ethylidene chloride is a/an______.

gem-dihalide

vinylic halide

vic-dihalide

For SN-1 reaction, preferred solvent will be -

Toluene

Benzene

Water

The ease of dehydrohalogenation of alkyl halides with alcoholic KOH is:

3∘ < 2∘ < 1∘

None of these

3∘ > 2∘ > 1∘

The alkyl halide that can not give a white precipitate with an alcoholic AgNO3 solution is:

Vinyl chloride

Allyl chloride

Ethyl chloride

When an alkyl halide reacts with an alkoxide, the product is-

Alcohol

Ester

Ether

A strong solution of alcoholic alkali will preferentially promote alkyl halide into an alkene by -

Substitution

Elimination

Addition

C2H5Cl on heating with alcoholic KOH will produce

C2H4

C2H5-OH

C2H2

An alkyl halide is insoluble in water because-

Alkyl halide does not form hydrogen bond with water

None of these

Alkyl halide is non polar & H2O is polar

The reactivity order of alkyl halides depends upon:

Nature of alkyl group only

Nature of halogen atom only

Nature of both alkyl group and a halogen atom

Which would be least reactive towards bromine?

Anisole

Nitrobenzene

Chlorobenzene

Which reaction is termed as Darzen's Reaction--

ROH + HCl

ROH + SOCl2

ROH + PCl3

SN-2 reaction will be fastest in:

CH3-Br

CH3-Cl

CH3CH2-Cl

In SN 1 reaction, the first step involves the formation of -

Carbocation

Free radical

Carbanion

When ethyl bromide is treated with moist Ag2O the product is -

Ethyl ether

Ethanol

Ethoxy ethane

Which reagent cannot be used to prepare an alkyl halide from an alcohol?

NaCl

HCl + ZnCl2

SOCl2

What would be the major product when Ethyl bromide reacts with silver nitrite

Nitroethane

Ethyl nitrite

Ethane

C6H5Cl is prepared by aniline with

HNO2 and then heated with Cu2Cl2

Cu2Cl2 + HCl

both

Decreasing order of reactivity of HX in the reaction ROH + HX  RX + H2O--------

HI > HBr > HCl > HF

HF > HBr > HCl > Hl

HBr > HCl > HI > HF

Fluorobenzene is prepared by treating benzene diazonium chloride with fluoroboric acid and heating the product obtained. This reaction is known as:

Schiemann reaction

Gattermann reaction

Sandmeyer reaction

Which chloride is the most reactive towards aqueous NaOH in -

Methyl chloride

Benzyl chloride

Chlorobenzene

Chlorobenzene can be obtained from benzene diazonium chloride by-

Wurtz reaction

Fittig reaction.

Gattermann's reaction

MCQ Oraganic Chemistry Quiz-Haloarene

MCQ Oraganic Chemistry Quiz-Alcohol,Phenol and Ether

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MCQ Oraganic Chemistry Quiz-Aldehyde and Ketone

The Cannizzaro’s reaction is not given by:

benzaldehyde

acetaldehyde

formaldehyde

Acetaldehyde is converted to ethane by Wolff-Kishner reduction. Acetaldehyde is treated with:

NH2NH2 and NaOC2H5

LiAlH4

H2 with Pd/BaSO4

Which of the following reactions will not result in the formation of carbon-carbon bonds?

Cannizzaro reaction

Reimer-Tiemann reaction

Friedel-Crafts acylation

Compound ‘A’ undergoes formation of cyanohydrin which on hydrolysis gives lactic acid [CH3CH(OH)COOH].

acetone

formaldehyde

acetaldehyde

The product formed in aldol condensation is:

an alpha, beta unsaturated ester

an alpha-hydroxy aldehyde or ketone

a beta-hydroxy aldehyde or a betahydroxy ketone

Tollen’s reagent is:

ammonical silver nitrate

alkaline mercuric chloride

alkaline potassium permangante

What is the product of oxidation of 2-butanone with conc. HNO3

2 mole of Propanoic acid

methanoic acid and ethanoic acid

2 mole of ethanoic acid

Aldol condensation does not occur between--

an aldehyde and an ester

two different ketones

two different aldehydes

Aldehydes group can occur:

only at the end carbon atom of the carbon chain

anywhere in the carbon chain

in the middle of carbon chain

Which of the following will not show aldol condensation?

benzaldehyde

acetaldehyde

benzophenone

The condensation reaction between one equivalent of acetone and two equivalents of benzaldehyde in presence of dilute alkali leads to the formation of :

benzylidene acetone

benzal acetophenone

dibenzylidene acetone

Hydrocarbons are formed when aldehydes and ketones are reduced with amalgamated zinc and conc. HCl. The reaction is called:

Wolff-Kishner’s reduction

Clemmension’s reduction

none of these

The product formed by the reaction of an aldehyde with a primary amine is :

schiff’s base

carboxylic acid

ketone

The formation of cyanohydrin from a ketone is an example of :

nucleophilic addition

nucleophilic substitution

electrophilic substitution

Arrange the followings according to the increasing order of reactivity in nucleophilic addition reaction: (I) Acetaldehyde ,(II) Acid chloride ,(III) Ketone, (IV) Ester

IV < III < I < II

I < II < III < IV

IV < III < II < I

Which of the following aldehydes gives Cannizzaro’s reaction when heated with strong alkali?

All of these

Acetaldehyde

Benzaldehyde

Fehling’s solution is :

ammoniacal cuprous chloride solution

copper sulphate and Rochelle salt + NaOH

acidified copper sulphate solution

The oxidation of toluene to benzaldehyde with chromyl chloride in CCl4 is called:

Perkin reaction

Etard’s reaction

Fittig reaction

When 2-butyne is treated with dil. H2SO4/HgSO4, the product formed is:

acetone

butan-1-ol

butanone

Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis yields:

ethyl iodide

methyl alcohol

ethyl alcohol

CH3CHO and C6H5CH2CHO can be distinguished chemically by:

Tollen’s reagent test

Benedict’s test

Iodoform test

Aldehydes are first oxidation products of :

primary alcohols

tertiary alcohols

secondary alcohols

When acetaldehyde is heated with Fehling’s solution, it gives a red precipitate of:

Cu2O

CuO

MCQ Oraganic Chemistry Quiz-Carboxylic Acid

When a mixture of calcium acetate and calcium formate is heated, it gives :

HCHO

acetaldehyde

acetone

Sulphonation of benzoic acid produces mainly-

o-sulphobenzoic acid

m-sulphobenzoic acid

o- and p-sulphobenzoic acid

Which one is strongest acid---

CHF2COOH

CH2FCOOH

CHCl2COOH

Acetic acid will be obtained on oxidation of---

Ethanol

None of the these

Methanal

The acid formed when propyl magnesium bromide is treated with carbon dioxide is

Both

C2H5COOH

C3H7COOH

When calcium benzoate and calcium formate are heated, the major product formed is:

benzophenone

benzaldehyde

acetophenone

The reagent uses for converting ethanoic acid to ethanol is--

PCl3 + HCl

LiAlH4

KMnO4

Which of the following gives benzoic acid on oxidation-

Chlorobenzene

Chlorotoluene

Benzyl chloride

What product is formed when acetic acid heated with P2O5

Acetyl chloride

Acetic anhydride

Acetaldehyde

Reduction of carboxylic acids gives---

Alcohol with LiAlH4

Alcohol with 2HI(Red-P)

Alcohol with hydrogen in presence of palladium

Acids have much higher boiling points than isomeric esters because:

Acids can ionise to give protons in aqueous solution

Acids form dimers by H-Bonding

none of these

Primary aldehyde on oxidation gives-

Esters

Carboxylic acid

Alcohols

Which of the following is known as Jones reagent?

KMnO4 in H2SO4

KMnO4 in alkaline medium

CrO3 in H2SO4

What is the IUPAC name of (C6H5)CH2CH2COOH?

2-Phenylethanoic acid

3-Phenylpropanoic acid

3-Phenylethanoic acid

Dry heating of calcium acetate will give:

CH3COOH

CH3CHO

CH3COCH3

When CH3COOH reacts with CH3–Mg–X

Alcohol is formed

Hydrocarbon is formed

Acetone is formed

When benzyl alcohol is oxidised with KMnO4, the product obtained is-

None of these

Benzoic acid

Benzaldehyde

Ethyl acetate is obtained when methyl magnesium iodide reacts with

Ethyl chloroformate

Ethyl formate

Acetyl chloride

Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives

Isopropyl alcohol

n-propyl alcohol

Propanal

When benzyl alcohol is oxidized with KMnO4, the product obtained is

Benzoic acid

None of these

Benzaldehyde

Hydrolysis of acetamide produces--

Methylamine

Acetic acid

Formic acid

Which of the following cannot be converted to benzoic acid on reaction with KMnO4- KOH followed by H3O+?

Ethyl benzene

Acetophenone

4-Methylacetophenone

Which of the following on hydrolysis forms acetic acid

CH3OH

C2H5OH

CH3CN