JEE Main Chemistry - Some Important Points and Important Questions on Organic Chemistry
Exam Duration: 60 Mins Total Questions : 30
On treating phenol with PC15 the main product is
- (a)
chlorobenzene
- (b)
triphenyl phosphate
- (c)
hexachlorobenzane
- (d)
BHC
Ice-cold hydrochloric acid is added to dimethyl ether the product formed is
- (a)
dymethoxy methane
- (b)
dymethyl oxinium chloride
- (c)
methyl chloride
- (d)
methanol and methyl chloride
Which of the following is amphoteric acid
- (a)
glycine
- (b)
salicylic acid
- (c)
citric acid
- (d)
lactic acid
The reaction \(2CH_{ 3 }COOC_{ 2 }H_{ 5 }\overset { \overset { \_ }{ O } C_{ 2 }H_{ 5 } }{ \longrightarrow } CH_{ 3 }COCH_{ 2 }COOC_{ 2 }H_{ 5 }\) is called
- (a)
perkin
- (b)
Tischenko
- (c)
Claisen
- (d)
schotten Bauman
The product formed on heating sucrose with conc.HNO3 is
- (a)
citric acid
- (b)
lactic acid
- (c)
sucrose nitrate
- (d)
oxalic acid
Wecker method involves the conversion of alkene using PdCl2 into corresponding
- (a)
alcohol
- (b)
ketone
- (c)
aldehyde
- (d)
ether
In fischer-spier easterification reaction, the order of reactivity of the alcohols follows the sequence
- (a)
\(CH_{ 3 }OH>CH_{ 3 }CH_{ 2 }OH>\left( CH_{ 3 } \right) _{ 2 }>\left( CH_{ 3 } \right) _{ 3 }COH\)
- (b)
\((CH_{ 3 })_{ 3 }COH>(CH_{ 3 })_{ 2 }CHOH>CH_{ 3 }COH\)
- (c)
\(\left( CH_{ 3 } \right) _{ 2 }CHOH>(CH_{ 3 })_{ 3 }COH>CH_{ 3 }OH>CH_{ 3 }CH_{ 2 }OH\)
- (d)
None of these
In Fisher-Spier easterification reaction, the order of reactivity of acids followthe sequence
- (a)
\(HCOOH>CH_{ 3 }COOH>\left( CH_{ 3 } \right) _{ 3 }COOH>\left( CH_{ 3 } \right) _{ 2 }COOH\)
- (b)
\(\left( CH_{ 3 } \right) _{ 3 }COOH>\left( CH_{ 3 } \right) _{ 2 }COOH>CH_{ 3 }COOH>HCOOH\)
- (c)
\(CH_{ 3 }COOH>\left( CH_{ 3 } \right) _{ 3 }COOH>(CH_{ 3 })_{ 2 }COOH>HCOOH\)
- (d)
None of these
Anisole can be prepared byheating
- (a)
C6H5Br and CH3ONa
- (b)
C6H5ONa and CH3Br
- (c)
C6H5ONa and C2H5Br
- (d)
None of these
m-dinitroaniline when reduced with ammonium sulphide gives
- (a)
m-diaminobenzene
- (b)
m-nitroaniline
- (c)
aniline
- (d)
None of these
Lactic acid on heating with conc.H2SO4 gives
- (a)
acetic acid
- (b)
Propionic acid
- (c)
acrylic acid
- (d)
formic acid
The Major product of nitration of benzoic acid is
- (a)
3-nitrobenzoic acid
- (b)
4-nitrobenzoic acid
- (c)
2-nitrobenzoic acid
- (d)
2,4-dinitrobenzoic acid
Which one of the following will not show geometrical isomerism?
- (a)
\(C{ H }_{ 3\quad \quad \quad \quad }\quad H\\ \quad \quad \quad \diagdown \quad \diagup \\ \quad \quad \quad \quad C\\ \quad \quad \quad \diagup \quad \diagdown \\ \quad Cl\quad \quad \quad CH=CHC{ H }_{ 3 }\)
- (b)
\(C{ H }_{ 2 }Cl_{ \quad \quad \quad }\quad \quad CH=C{ H }_{ 2 }\\ \quad \quad \quad \quad \quad \diagdown \quad \diagup \\ \quad \quad \quad \quad \quad \quad C\\ \quad \quad \quad \quad \quad \diagup \quad \diagdown \\ \quad \quad \quad H\quad \quad \quad C{ H }_{ 3 }\)
- (c)
\(\quad\quad\quad\quad\quad C{ H }_{ 2 }=CH\quad \quad \quad C{ H }_{ 2 }Cl\\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \diagdown \quad \diagup \\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad C\\ \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \diagup \quad \diagdown \\ \quad \quad \quad \quad \quad \quad \quad \quad \quad H\quad \quad \quad C{ H }=CHCl\)
- (d)
\(\quad C{ H }_{ 3 }CH\quad =\quad CHC{ H }_{ 2 }C{ H }_{ 3 }\)
RCH2CCl2 R \(\overset { Reagent }{ \longrightarrow } \) RC \(\equiv \) CR .The reagent used is
- (a)
Na
- (b)
HCl / H2O
- (c)
KOH in C2H5OH
- (d)
Zn / alcohol
Which one of the following reagents would not yield alkane?
- (a)
\({ C }_{ 2 }{ H }_{ 5 }OH\quad \overset { HI/Red\ P }{ \underset { { 150 }^{ 0 }C }{\longrightarrow } } \)
- (b)
refluxing butanoic with Zn/Hg-HCl
- (c)
hydrolysis of ethyne
- (d)
electrolysis of sodium proponate solution
C2H5Br \(\overset { AgCN }{ \longrightarrow } \quad X\quad \overset { Reduction }{ \underset { Zn/Hg-HCl }{ \longrightarrow } } \quad Y\) , Y is
- (a)
n-propylamine
- (b)
ethylamine
- (c)
isopropylamine
- (d)
ethylmethylamine
Which is not true for C=O bond and C=C bond?
- (a)
Both are made up of one \( \delta \) bond and one \(\pi \)-bond
- (b)
Both are planar in nature
- (c)
Both use SP2 hybrid of the C atom for their formation
- (d)
Carbonyl compounds undergo electrophilic addition reaction whereas compounds containing ethylenic double bonds undergo nucleophilic addition reaction
C6H6 \(\overset { conc.{ HNO }_{ 3 } }{ \underset { conc.{ H }_{ 2 }{ SO }_{ 4 }.363K }{ \longrightarrow } \quad } \) X \(\overset { { (NH }_{ 4 })_{ 2 }{ S }_{ x\quad } }{ \longrightarrow } Y\)
In the above sequence X and Y are
- (a)
nitrobenzene ,aniline
- (b)
m-dinitrobenzene , m -phenylene diamine
- (c)
m-dinitrobenzene and m-nitroaniline
- (d)
p-dinitrobenzene, p-nitroaniline
Iodoform can be prepared from all except
- (a)
isopropyl alcohol
- (b)
3-methyl 2-butanone
- (c)
iso-butyl alcohol
- (d)
ethyl methyl ketone
Identify Z in the series
\(C_3H_7OH\xrightarrow[160°-180°C]{conc.H_2SO_4}X\xrightarrow{Br_2}Y\xrightarrow[alc.KOH]{Excess of}Z\)
- (a)
\(CH_3-CH-CH_2\\\quad\quad\quad\ |\ \ \quad\quad|\\\quad \quad \quad NH_2\ \ \ NH_2\)
- (b)
\(CH_3-CH-CH_2\\\quad\quad\quad\ |\quad\quad\ \ |\\\quad\quad\quad OH\quad\ OH\)
- (c)
\(CH_3-C=CH_2\\\quad\quad\quad\ |\\\quad\quad\quad\ OH\)
- (d)
\(CH_3-C\equiv CN\)
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