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85601.

Acetophenone hydrazone when heated with KOH in ehtylene glycol at 453 K gives_____. This is known as________.

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SOLUTION :ETHYLBENZENE, Wolff-Kishner REDUCTION.
85602.

Acetophenone from benzene (Friedel-Crafts acylation)

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Solution :When benzene is treated with acetyl chloride in the presence of ANHYDROUS ALUMINIUM chloride, acetophenone is obtained. This reaction is KNOWN as Friedel Craft's ACYLATION.
85603.

Acetophenone condenses in presence of aluminium tert-butoxide to give_______which is used as a____.

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SOLUTION :Dypnone, HYPNOTIC.
85604.

Acetophenone cannot be prepared easily starting from

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`C_(6)H_(5)CH(OH)CH_(3)(b)`
`C_(6)H_(5)CH_(3)`
`C_(6)H_(5)C-=CH`
`C_(6)H_(6)`

SOLUTION :(a) `underset("METHYL phenyl carbinol")(C_(6)H_(5)CH(OH)CH_(3))overset([O])RARR underset("Acetophenone")(overset(" O")overset(" ||")(C_(6)H_(5)-C-CH_(3)))`

(d) `underset("Benzene")(C_(6)H_(6)) underset("anhy."AlCl_(3))overset(CH_(3)COCl)rarr underset("Acetophenone")(C_(6)H_(5)COCH_(3))`
85605.

Consider the following statement acetophenone can be prepared by (1) Oxidation of 1-phenylethanol (2) Reaction of banzylalcohol with methyl magnesium bromide (3) Friedel-Crafts reaction of benzene with acetyl chloride (4) Distillation of calcium benzoate

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1 & 4
1 & 2
1 & 3
3 & 4

Answer :C
85606.

Acetophenone can be converted into amine is a single step by step

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`Br_(2)//KOH`
`H_(2)O//OH^(-)`
`NH_(3)//H_(2),Ni//Delta`
`NH_(2)OH`

Solution :
85607.

Acetophenone and benzophenone can be distinguished by :

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TOLLEN's test
DNP test
IODOFORM test
SCHIFF's reagent.

Answer :C
85608.

Acetonoxime on catalytic hydrogenation gives

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`1-`Propanamine
Isopropylamine
Ethyl METHYL AMINE
`CH_(4)` and ethanamine

Solution :
85609.

Acetonitrite when boiled with alkali gives

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`CH_(3) COOH` only
`CH_(3) COOH + C_(2) H_(5) OH`
`CH_(3) COOH + NH_(3)`
`CH_(3) COOH + H_(2)`

Answer :C
85610.

Acetonitrile (Meoverset(o+)(N)-=overset(ɵ)(C )) on reaction with Cl_(2) with DMSO gives methyl isocyanate (MeN=C=O). Isocyanides can also be oxidised to alkyl isocyanates with:

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a.`HGO`
b.`Hg_(2)O`
C.`Ag_(2)O`
d.`O_(3)`

ANSWER :A::D
85611.

Acetonitrile to acetaldehyde?

Answer»

Solution :Acetonitrile to ACETALDEHYDE
`CH_(3)-C-=N+2(H)+HCl overset("Dry ether")to underset("ACETAL dimine hydrochloride")(CH_(3)CH)=NH.HCl overset(H_(3)O^(+))to underset("Acetaldehyde")(CH_(3)CHO)+NH_(4)Cl`
85612.

Acetonitrileon reduction gives

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PROPANAMINE
methanamine
ETHANAMINE
ACETIC ACID

ANSWER :C
85613.

Acetonitrile on reduction with sodium and C_(2)H_(5)OH gives______.

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SOLUTION :ETHYLAMINE
85614.

Acetonitrileis treatedwith sodiumandethanolgives

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DIMETHYLAMINE
ACETIC ACID
ETHYL amine
ethyl amine

Answer :B
85615.

Acetonitrile is treatedwithsodiumandethanolgives

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METHYL AMINE
acetic ACID
ethyl amine
methanal

ANSWER :C
85616.

Acetoneoxime on catalytic hydrogenation gives :

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1- PROPANAMINE
Isoprophlamine
Ethyl methyl amine
`CH_4` and ethanamine

ANSWER :B
85617.

Acetonitrile is

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`C_(2)H_(5)CN`
`CH_(3)CN`
`CH_(3)COCN`
`C_(6)H_(5)CH_(2)CN`

Solution :`CH_(3)CN` is CALLED acetonitrile.
85618.

Acetone will be formed by the ozonolysis of :

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Butene-1
Butene-2
Isobutene
Butyne-2

Solution :`CH_(3) - UNDERSET(CH_(3))underset(|)(C) = CH_(2) underset(H_(2)O,Zn)overset(O_(3))rarr underset("ACETONE")(CH_(3) underset(CH_(3))underset(|)(C) = O)`
85619.

Acetone when treated with conc.H_2SO_4 gives mesitylene which has the following formula :

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`(CH_3)_2C=CHCOCH_3`
`(CH_3_2C(OH)CH_2COCH_3`
1,3,5-trimethylbenzene.
`(CH_3)_2C=CHCOCH=C(CH_3)_2`

ANSWER :C
85620.

Acetone when saturated with dry acid gives :

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DIACETONE alcohol
Mesityl oxide
Mesitylene
Propane

Answer :B
85621.

Acetone when distilled with little conc. H_(2)SO_(4) gives_______.

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SOLUTION :MESITYLENE or 1,3,5-trimethylbenzene.
85622.

Acetone upon condensation can give :

Answer»

mesityl oxide
phorone
Crotonaldehyde
mesitylene

Solution :(a,b,d) are CORRECT. For DETAILS consult SECTION 11.
85623.

Acetone undergoes reduction with hydrazine in the presence of NaOH to form propane. This reaction is known as :

Answer»

CLEMMENSEN reduction
Wolff-Kishner reduction
Rosenmund reduction
Reformatsky reaction.

Answer :B
85624.

Acetone soluble in water but benzophenone is not. Give reason.

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Solution :ACETONE is soluble in water due to the intermolecular HYDROGEN BONDING between polar carbonyl group and water molecules.
In BENZOPHENONE, the phenyl GROUPS are bulkier so C = O cannot form hydrogen bonds with water due to steric hindrance.
85625.

Acetone shows similarity with acetaldehyde in reacting to

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TOLLEN's reagent
Schiff's reagent
FEHLING solution
GRIGNARD reagent

Solution :Acetone and acetaldehyde, both contains `gt C = O` group . The GRIGNARDS adds in `gt C = O` group . These are nucleophilic substitutionreaction .
85626.

Acetone reacts with iodine (I_(2)) to form iodoform in the presence of

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`CaCO_(3)`
`NaOH`
`KOH`
`MgCO_(3)`

Solution :`UNDERSET("Acetone")(CH_(3)-OVERSET(O)overset(||)(C)-CH_(3))+3I_(2)+4NaOHtounderset("IODOFORM")(CHI_(3))+CH_(3)CO overset(-)(O)overset(+)(Na)+3NaI+3H_(2)O`
85627.

Acetone reacts with iodine to form iodoform in the presence of

Answer»

`CaCO_(3)`
`NaOH`
`KOH`
`MgCO_(3)`

SOLUTION :Acetone on iodination gives iodoform in the presence of `NaOH`
`underset("Acetone")(CH_(3)-overset(O)overset(||)(C)-CH_(3))+3I_(2)+4NaOH overset(-3H_(2)O)RARR underset("Iodoform")(CHI_(3))+underset("Sodium acetate")(CH_(3)COONa)+underset("Sodium iodide")(3NaI)`
85628.

Acetone reacts with I_(2) in presence of NaOH to form:

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`C_(2)H_(5)I`
`C_(2)H_(4)I_(2)`
`ChI_(3)`
`CH_(3)I`

Answer :3
85629.

Acetone reacts with chloroform in presence of caustic soda (NaOH) to give:

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Chloral
Chloretone
Acetyl chloride
Ethyl chloride

Answer :B
85630.

Acetone reacting with HCN to form cyanohydrin is ________ type of reaction.

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NUCLEOPHILIC addition
Electrophilic substitution
Free RADICAL substitution
Redox

Answer :A
85631.

Acetone (Propan-2-one).

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Solution :(1) Acetone is USED as a commercial solvent.
(2) It is used in the MANUFACTURE of explosives, lacquers, paint removers, plastice, DRUGS, perfumes, adhesives, indisinfectants, ETC.
85632.

Acetone oxyme on reduction gives

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1-Propanamine
Isopropylamine
Ethylmethylamine
`CH_4` and ethanamine

Answer :B
85633.

Acetone oxime on catalytic hydrogenation gives

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PROPANAMINE
isopropylamine
ethylmethyl amine
ethane amineand `CH_(4)`

Solution :`CH_(3)- OVERSET( CH_(3))overset(|) ( C ) = N - OH + 4[H] overset( N/A // alcohol) (to)`
`CH_(3)- overset( CH_(3)) overset( |) underset( H) underset(|) ( C )- NH_(2)+ H_(2) O`
Isoropylamine
85634.

Acetone oxime on catalytic hydrogenation gives :

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PROPANAMINE
ISOPROPYLAMINE
ETHYL METHYL amine
Ethanamine and methane.

Answer :B
85635.

Acetone oxime is obtained by reacting acetone with

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`NH_3`
`NH_2OH`
`NH_2Na`
`NH_2NH_2`

ANSWER :B
85636.

Acetone overset("ethyleneglycol")rarr X. The product X in this reaction is

Answer»

MESITYLENE
ACETYLENE
KETOL
Acetol

ANSWER :C
85637.

Acetone on treatment with CH_(3)MgI on further hydrolysis gives,

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`(CH_(3))_(2)CHCH_(2)OH`
`(CH_(3))_(3)COH`
`CH_(3)CH(OH)CH_(2)CH_(3)`
`CH_(3)CH_(2)CH(OH)CH_(2)CH_(3)`

Solution :`CH_(3) COCH_(3) + CH_(3)MgI underset(H_(3)O^(+)) overset("DRYETHER") to (CH_(3))_(3)COH + MgIOH`
85638.

Acetone on treatment with CH_(3) - Mg - I and on further hydrolysis gives

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Isopropyl alcohol
Primary alcohol
Acetic ACID
2-Methyl 2-propanol

Solution :Acetane REACTS with Grignard's reagent to give tertiary alcohol.
`(CH_(3))_(2)C=O+CH_(3)MgBr overset(H_(2)O)to UNDERSET("ter-butyl alcohol")((CH_(3))_(3)C-OH)`
85639.

Acetone on treatingwith conc H_(2)SO_(4) gives

Answer»

benzene
MESITYLENE
phorone
mesityl OXIDE

Answer :B
85640.

Acetone on reduction with magnesium amalgam and water gives______.

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SOLUTION :PINACOL or 2,3-dimethylbutane-2,3-diol.
85641.

Acetone on reduction gives :

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`CH_3COOH`
`CH_3CHO`
`C_2H_5OH`
`(CH_3)_2CHOH`

ANSWER :D
85642.

Acetone on reaction with NH_(3) gives

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Dimer of ACETONE
`alpha`-Aminoacetone
Amino acid
Diacetonamine.

Solution :`2CH_(3)-underset(CH_(3))underset("|")"C"=O+NH_(3)rarrunderset("Diacetonamide")(CH_(3)-OVERSET(NH_(2))overset("|")underset(CH_(3))underset("|")"C "-CH_(2)COCH_(3))`
85643.

Acetone on distillation with conc. H_(2)SO_(4) forms

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Phorone
Acrolein
MESITYLENE
mesityl oxide

Solution :mesitylene or 1,3,5-trimethylbenzene.
85644.

Acetone on distillation with bleaching powder and water gives chloroform and X. Ethyl alcoholon distillation with bleaching powder and water gives CHCI_3, and Y. X and Y together on distillation gives

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`CH_3CHO`
`CH_3COCH_3`
`CH_2=CHOH`
`CH_3COC_2H_5`

ANSWER :A
85645.

Acetone on condensation gives:

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MESITYLENE
phorone
mesityl oxide
all the these

ANSWER :D
85646.

Acetone on addition to methyl magnesium bromide form a complex, which on decomposition with acid gives X and Mg(OH)Br. Which one of the following is X.

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`CH_3OH`
`(CH_3)_3C-OH`
`(CH_3)_2CHOH`
`CH_3CH_2OH`

ANSWER :B
85647.

Acetone on condensation gives

Answer»

mesitylene
mesityl oxide
propanal
di-isopropyl ether

Answer :B
85648.

Acetone molecules on condensation can give :

Answer»

mesityl oxide
phorone
crotonaldehyde
mesitylene

Answer :A::B::D
85649.

Acetone may be produced from starch by the action of:

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Acid
Certain bacteria
Oxidising agents
None of the above

Answer :B
85650.

Acetone may be obtained from starch by the action of :

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Acid
Bacteria
Oxidising agent
None

Answer :B