JEE Main Chemistry - Introduction To Organic Chemistry
Exam Duration: 60 Mins Total Questions : 30
When formic aid is heated with concentrated sulphuric acid the compound formed is
- (a)
CO
- (b)
CO2
- (c)
HCHO
- (d)
NONE OF THESE
Which of the following compounds displays geometrical isomerism?
- (a)
CH2=CHBr
- (b)
CH2=CBr2
- (c)
Cl CH=CH Cl
- (d)
Br2 C=C Cl2
The IUPAC name of CH3CONH2 is
- (a)
propanone
- (b)
acetamide
- (c)
ethanamide
- (d)
propionamide
Which one of the following has asymmetric carbon?
- (a)
CH3CHOHCH3
- (b)
CH3CH(OH)2
- (c)
CH2OHCHOHCH2OH
- (d)
CH3CHCOHCOOH
What is the number of possible alkynes with the molecular formula C5H8?
- (a)
2
- (b)
3
- (c)
4
- (d)
5
Which of the following molecular formulae belongs to the acetylene series?
- (a)
C7H12
- (b)
C9H18
- (c)
C12H26
- (d)
C15H30
The isomers must have the same
- (a)
structural formula
- (b)
molecular formula
- (c)
physical properties
- (d)
NONE OF THE ABOVE
The correct chemical name for\(C{ H }_{ 3 }-CH-C{ H }_{ 3 }\\ \quad \quad \quad \quad |\\ \quad \quad \quad \quad C{ H }_{ 3 }\) would be
- (a)
butane
- (b)
2-methy1-propane
- (c)
isopropy1 methane
- (d)
dimethy1 ethane
The type of isomerism not found in alkenes is
- (a)
geometrical isomerism
- (b)
position isomerism
- (c)
chain isomerism
- (d)
mesomerism
Which one of the following structures will exhibit cistrans isomerism?
- (a)
CH2Br-CH2Br
- (b)
CBr3-CH3
- (c)
CHBr=CHBr
- (d)
CBr2=CH2
Which one of the following pairs of isomers is not metamers?
- (a)
CH3-O-C3H7 and C2H5-O-C2H5
- (b)
C2H5CH(OH)CH3 and C2H5-O-C2H5
- (c)
CH3-O-C3H7 and C2H5-O-C2H5
- (d)
(CH3)3 COH and CH3-CHO CH2-CH3
The number of isomeric open chain hydrocarbons (structural isomers) with molecular formula C4H8 is
- (a)
2
- (b)
3
- (c)
4
- (d)
6
In which one of the following compounds, the oxidation number of carbon is zero?
- (a)
CH4
- (b)
CO2
- (c)
HCHO
- (d)
CH3OH
Which one of the following cycloalkanes is least stable?
- (a)
cyclopropane
- (b)
cyclobutane
- (c)
cyclopentane
- (d)
cyclohexane
Which of the following does not show geometrical isomerism?
- (a)
1, 2-dichloro-1-pentene
- (b)
1, 3-dichloro-2-pentene
- (c)
1, 1-dichloro-1-pentene
- (d)
1, 4-dichloro-2-pentene
The compounds are example of
\({ C }_{ 6 }{ H }_{ 5 }\quad \quad \quad \quad H\\ \quad \quad \diagdown \quad \quad \quad \diagup \quad \quad \quad \quad \\ \quad \quad \quad C=C\\ \quad \quad \diagup \quad \quad \quad \diagdown \\ \quad H\quad \quad \quad \quad COOH\)and \({ C }_{ 6 }{ H }_{ 5 }\quad \quad\quad COOH\\ \quad \quad \diagdown \quad \quad \quad \diagup \quad \quad \quad \quad \\ \quad \quad \quad C=C\\ \quad \quad \diagup \quad \quad \quad \diagdown \\ \quad H\quad \quad \quad \quad \quad H\)
- (a)
Optical isomers
- (b)
enantiomers
- (c)
metamers
- (d)
geometrical isomers
which one of the following is optically active?
- (a)
\(C{ H }_{ 3\quad \quad \quad }\quad CO-NH\quad \quad \quad\quad C{ H }_{ 3\quad \quad \quad }\quad \\ \quad \quad \diagdown \quad \quad \diagup \quad \quad \quad \quad \quad \diagdown \quad \quad \quad \diagup \\ \quad \quad \quad \quad C\quad \quad \quad \quad \quad \quad \quad \quad C\\ \quad \quad \diagup \quad \quad \diagdown \quad \quad \quad \quad \quad \diagup \quad \quad \diagdown \\ H\quad \quad \quad \quad \quad H-CO\quad \quad \quad \quad \quad H\)
- (b)
\(C{ H }_{ 3\quad \quad \quad }\quad CO-NH\quad \quad \quad \quad \quad H\\ \quad \quad \diagdown \quad \quad \diagup \quad \quad \quad \quad \quad \diagdown \quad \quad \quad \diagup \\ \quad \quad \quad \quad C\quad \quad \quad \quad \quad \quad \quad \quad C\\ \quad \quad \diagup \quad \quad \diagdown \quad \quad \quad \quad \quad \diagup \quad \quad \diagdown \\ H\quad \quad \quad \quad NH-CO\quad \quad \quad \quad \quad C{ H }_{ 3\quad \quad \quad }\)
- (c)
\(C{ H }_{ 3 }-C{ H }_{ 2 }-COOH\)
- (d)
\(\quad\quad COOH\\ \quad \quad \quad \quad |\\ \quad H-C-OH\\ \quad \quad \quad \quad |\\ \quad H-C-OH\\ \quad \quad \quad \quad |\\ \quad \quad COOH\\ \)
The correct basic strength amongst the following compounds is
- (a)
I >II > III >IV
- (b)
I <IV <III <II
- (c)
IV < I <III <II
- (d)
III < IV <II < I