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85651.

Acetone is used in:

Answer»

FACE creams
Vanilla
Nail polishes
sweet SMELLING erasers

Answer :C
85652.

Acetone is used as a _____ and _____.

Answer»

SOLUTION :solvent, USED for manufacture of IODOFORM, CHLOROFORM, synthetic RUBBER
85653.

Acetone is treated with hydroxylamine and the derivative so formed is subjected to catalytic hydrogenation. Final product is

Answer»

Isopropylamine
Methanamine
Trimethylamine
Propylamine

Solution :`{:(""CH_(3)""CH_(3)""CH_(3)),("|||"),(CH_(3)-C=O+H_(2)NOH rarr CH_(3)-C=NOH OVERSET("REDUCTION")(rarr)CH_(3)-CHNH_(2)+H_(2)O),("OXIME""Isopropylamine"):}`
85654.

Acetone is used

Answer»

As a SOLVENT
In NAIL polishes
For storing ACETYLENE under pressure
All are correct

ANSWER :D
85655.

Acetone is treated with sodium amalgam and water gives,

Answer»

`(CH_3)_2CHOH`
`CH_3CH_2CH_2OH`
`C_2H_5OH`
`CH_3CH_2COOH`

SOLUTION :`CH_3COCH_3 + 2H OVERSET(NAHG + H_2O)to (CH_3)_2CHOH`
85656.

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is

Answer»

`CH_(3)CH_(2)CH_(2)-overset(O)overset(||)(C )-CH_(3)`
`CH_(3)CH_(2)CH_(2)-overset(O)overset(||)(C )-CH_(2)CH_(2)CH_(3)`

Solution :`CH_(3)-UNDERSET(O)underset(||)(C )-CH_(3)overset(C_(2)H_(5)OH)rarrunderset("Hemiacetal")(CH_(3)-overset(""OC_(2)H_(5))overset(|)underset(darr)underset(OH)underset(|)(C)-CH_(3))overset(C_(2)H_(5)OH)rarr underset("Acetal")(CH_(3)-overset(""OC_(2)H_(5))overset(|)underset(darr)underset(""OC_(2)H_(5))underset(|)(C)-CH_(3)`
85657.

Acetone is soluble in water becauseof

Answer»

COVALENT bonding
ionic bonding.
hydrogen bonding
van DER WAAL's forces.

Answer :C
85658.

Acetone is obtained by ozonolysis and followed by hydrolysis in the presence of zinc by

Answer»

2, 3-dimethyl butan-2-ene
2, 3-dimethyl butan-1-ene
2-methyl butan-2-ene
2-methyl butan-1-ene

Answer :A
85659.

Acetone is prepared by:

Answer»

PYROLYSIS of ACETIC acid
Oxidation of acetic acid
Pyrolysis of CALCIUM acetate
Oxidation of n-propyl alcohol

Answer :C
85660.

Acetone is prepared by

Answer»

OXIDATION of acetic acid
pyrolysis of acetic acid
pyrolysis of CALCIUM ACETATE
oxidation of n-propyl alcohol

ANSWER :C
85661.

Acetone is highly soluble in water but benzophenone is not. Give reasons.

Answer»

Solution :In acetone, C=O group easily forms H-bonds with water and hence acetone is highly soluble in water. HOWEVER, in benzophenone, the phenyl GROUPS are BULKY and hence C=O groups cannot form H-bonds with water due to st ERIC hindrance and hence benzophenone is INSOLUBLE in water.
85662.

Acetone is heated with bleaching powder to give

Answer»

chloroform
acetaldehyde
ethanol
phosgene.

Solution :`underset("Bleaching powder")(CaOCl+H_(2)O) to Ca(OH)_(2)+Cl_(2)`
`CH_(3)COCH_(3)+3Cl_(2) to C Cl_(3)COCH_(3)+3HCl`
`2C Cl_(3)COCH_(3)+Ca(OH)_(2) to CHCl_(3)`
85663.

Acetone givs additon elimination reaction with

Answer»

`NH_(2)OH`
`NaHSO_(3)`
`NH_(2)NHCONH_(2)`
`NH_(2)NHC_(6)H_(5)`

Answer :A::C::D
85664.

Acetone is converted into propane by Wolff- Keshner reduction by using reagent

Answer»

`LiAlH_(4)`
`ZN. Hg + conc HCl`
` H_(2) + pd - BaSO_(4)`
`NH_(2) - NH_(2) " and " KOH`

ANSWER :D
85665.

Acetone gives test with

Answer»

Phenyl HYDRAZINE
FEHLING solution
SCHIFF's REAGENT
all the above

Answer :A
85666.

Acetone gives addition elimination reaction with (1)NH_(2) - OH ""(2) NH_(2) - CONH - NH_(2) (3) NaHSO_(3)""(4) CH_(3) - NH_(2)

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`2,4`
`3,4`
`1,2,4`
`1,2,3`

ANSWER :C
85667.

Acetone, formaldehyde and acetaldehyde can be distinguished when treated with:

Answer»

`H_(2)N NH_(2)`
`NH_(3)`
`NH_(2)OH`
`C_(6)H_(5)NHNH_(2)`

ANSWER :B
85668.

Acetone +Ararr oxime of acetone Acetone +Brarr diacetone amine Acetone +Crarrmesitylene Acetone +Drarr A,B,C and D are :

Answer»

`NH_(2)OH,NH_(3),conc.H_(2)SO_(4),SOCl_(2)`
`HNO_(2),NH_(3),conc. H_(2)SO_(4),PCl_(5)`
`HNO_(2),NH_(3), conc.H_(2)SO_(4),Cl_(2)`
`NH_(2)OH,NH_(3),H_(2)SO_(4),Cl_(2)`

Answer :A
85669.

Acetone boils at 56.38^(@)C and a solution of 1.41 g of an organic compound in 20 g of acetone boils at 56.88^(@)C. Calculate the molar mass of the organic compound (Given k_(b) for acetone = 1.67 k kg/ mol).

Answer»

Solution :`DELTA T_(B) = K_(b) xx ` Molality
`Delta T_(b)= k_(b) xx (("mass of SOLUTE/molecular mass")xx 1000)/("mass of SOLVENT")`
`(56.88- 56.38) = (1.67 xx (1.41// "Msolute") xx 1000)/(20)`
Mass of solute (M) = 235.47
85670.

Acetone and propanal are

Answer»

POSITION ISOMERS
functional isomers
geometrical isomers
optical isomers.

ANSWER :B
85671.

Acetone and propanal are :

Answer»

FUNCTIONAL ISOMERS
POSITION isomers
GEOMETRICAL isomers
Optical isomers.

ANSWER :A
85672.

Acetone and benzene can be seperated from their mixture by _________.

Answer»

SIMPLE distillation
fractional crystallisation
steam distillation
fractional distillation

Answer :D
85673.

Acetone and chloroform reacts to produce

Answer»

`CH_(3)COOC_(2)H_(5)`
`CH_(3)CHO`
`(CH_(3))_(2)C(OH)C CI_(3)`
`HCHO`

SOLUTION :Acetone and CHLOROFORM reacts as below
85674.

acetone and carbon disulphide form binary liquid solution showing positive deviation from Raolut law. The normal polling point (T_b ) of pure acetone is less than that of pure CS_2 . Pick out the incorrect statements among the following.

Answer»

Boiling temperature of mixture is always less than boiling temperature of acetone.
Boiling temperature AZEOTROPIC mixture is always less than boiling temperature of pure `CS_2`
When a small amount `CS_2` (less VOLATILE component) is ADDED to excess of acetone boiling point of resulting mixture increases.
A mixture of `CS_2` and `CH_3COCH_3` can be completely separated by SIMPLE fractional distillation

Answer :A::C::D
85675.

Acetone and acetaldehyde can be identified by treatment with :

Answer»

`NaHSO_3`
`NaCN+HCl`
`NAOH + I_2`
`[AG(NH_3)_2]^+`

ANSWER :D
85676.

Acetone and Acetaldehyde can be distinguished using

Answer»

GRIGNARD REAGENT
`NaHSO_3`
AMMONIACAL `AgHO_3`
`PCI_5`

ANSWER :C
85677.

Acetone and acetaldehyde are differentiated by ...

Answer»

`NaOH + I^2 `
`Ag (NH_3)_2 ` + (TOLLENS's REAGENT)
`I^2`
`NaOH + NH_3`

SOLUTION :`Ag (NH_3)_2 ` + (Tollens.s reagent)
85678.

Acetone and acetaldehyde are

Answer»

POSITION isomers
Functional isomers
Not isomers
Chain isomers

Answer :C
85679.

Acetone adds up the following without the elimination of water molecule

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`NH_2-OH`
2,4 - DNP
`H_2N - NH_2`
HCN

Answer :D
85680.

Acetone+ A toOxime of acetone Acetone +B to Propane Acetone + C toPinacol . A, B and C are

Answer»

`NH_(2) - OH, Mg , Zn . HG + CONC. HCl`
`NH_(2)- OH, Zn. Hg + conc. HCl, Mg`
`Mg , NH_(2) - OH , Zn . Hg + conc. HC`
`NH_(2) - OH, Na. Hg + H_(2)O , Mg`

Answer :B
85681.

Acetoacetic ester is used for the synthesis of:

Answer»

`ALPHA,BETA` unsaturated acids
`GAMMA`-keto acids
monocarboxylic acids
dicarboxylic acids

ANSWER :A::B::C::D
85682.

Acetoacetic ester is made by the process of:

Answer»

esterification
condensation
polymerisation
isomerisation

ANSWER :B
85683.

Acetoacetic ester behaves as :

Answer»

An UNSATURATED HYDROXYL COMPOUND
A keto compound
BOTH (A) AND (B)
None of these

Answer :C
85684.

Acetic anhydride reacts with PCl_(5) to give :

Answer»

`CH_(3)Cl + H_(3)PO_(3)`
`CH_(3)COCl+POCl_(3)`
`CH_(3)COOC_(2)H_(5) + PCl_(3)`
`CH_(3)COCH_(3)+POCl_(3)`

Answer :D
85685.

Acetic anhydride reacts with dimethylamine to form :

Answer»

ACETAMIDE
N-methyl acetamide
N.N-DIMETHYL acetamide
dimethyl ACETATE

ANSWER :B
85686.

Acetic anhydride reacts with diethyl ether in the presence of anhydrous AlCl_3 to give :

Answer»

ETHYL ACETATE
Methyl propionate
Methyl acetate
Propionic acid

Answer :A
85687.

Acetic anhydride reacts with diethyl ether in presence of anhydrous AlCl_(3) to form

Answer»

ETHYL acetate
Methyl propionate
Methyl acetate
Propionic acid

Solution :
85688.

Acetic anhydride on treatment with diethyl ether fonns:

Answer»

`CH_(3)COCH_(3)+C_(2)H_(5)OH`
only ethyl acetate
`CH_(3)COOH+C_(2)H_(5)OH`
only METHYL acetate

Answer :B
85689.

Acetic anhydride on reduction with LiAIH_(4) in ether gives

Answer»

acetaldehyde
ethyl ALCOHOL
ACETONE
ethane

Answer :C
85690.

Acetic anhydride may be prepared by the reaction of acetic acid with

Answer»

SODA lime
`LiAIH //H_4`
` P_2O_5`
`NA`

ANSWER :C
85691.

Acetic anhydride may be prepared by the reaction of acetic acid with:

Answer»

<P>`H_(2)C=C=O `
`LiAlH_(4)`
`P_(2)O_(5)`
`C_(2)H_(5)OH//HgSO_(4)` on heating

Answer :A::C::D
85692.

Acetic anhydride is used

Answer»

as an acetylating agent
for the DETECTION and ESTIMATION of -OH & -`NH_2` groups
In the manufacture of ASPIRIN
all of the above

Answer :D
85693.

Acetic anhydride is used:

Answer»

as an acetylating agent
for the detection and ESTIMATION of -OH and `-NH_(2)` groups
in the manufacture of ASPIRIN
all of the above

ANSWER :B
85694.

Acetic anhydride is prepared industrially by heating sodium acetate with:

Answer»

`PCl_(5)`
`SOCl_(2)`
`CH_(3)COCl`
`Cl_(2)andSCl_(2)`

Answer :B::C::D
85695.

Acetic anhydride is prepared industrially by :

Answer»

beating sodium ACETATE with thionyl CHLORIDE sulphuryl chloride
beating acetylene into glacial acetic ACID containing some mercuric sulphate
passing KETENE through glacial acetic acid
all of the above

ANSWER :C
85696.

Acetic anhydride is obtained from acetyl chloride by the reaction of

Answer»

`P_(2)O_(5)`
`H_(2)SO_(4)`
`CH_(3)COONa`
`CH_(3)COOH`

Solution :`CH_(3)-COOunderline(Na)+CH_(3)-CO-underline(Cl)-UNDERSET("Acetic anhydride")(CH_(3)-OVERSET(O)overset(||)(C)-O-overset(O)overset(||)(C)-CH_(3))+NACL`
85697.

Acetic anhydride is obtained by the reaction of :

Answer»

<P>ACETIC ACID and sodium
acetic acid and water
acetic acid and ethyl alcohol
acetic acid and `P_(2)O_(5)`.

ANSWER :D
85698.

Acetic anhydride can easily be prepared by :

Answer»

DISTILLING a mixture of anhydrous sodium
acetate and ACETYL chloride
Heating ACETIC acid
Partial hydrolysis of acetyl chloride
Oxidation of ethanol

Answer :A
85699.

Acetic anhydric reacts with benzene in the presence of AlCl_(3) to give:

Answer»

Toluene
Acetophenone
Benzaldehyde
Benzoic acid.

Answer :B
85700.

Acetic anhydrbe reacts with diethyl ether in the presence of anhydrous AlCl_(3) to give

Answer»

`CH_(3)CHOOCH_(3)`
`CH_(3)CH_(2)COOCH_(3)`
`CH_(3)COOCH_(3)CH_(3)`
`CH_(3)CH_(2)OH`

SOLUTION :`underset("Ether")((CH_(3)CH_(2))_(2)O)+underset("Acid ANHYDRIDE")((CH_(3)CO)_(2)O) OVERSET("anhy." AlCl_(3))(to)underset("Ester")(CH_(3)COOCH_(2)CH_(3))`