1 |
Which of the following acid can be used as a catalyst in Friedel Craft's reactions |
AlCl<sub>3</sub>
HNO<sub>3</sub>
BeCl<sub>2</sub>
NaCl
|
2 |
The benzene molecule contains |
three double bonds
two double bonds
one double bond
delocalized pie-electron charge
|
3 |
Which compound is the most reactive |
Benzene
Ethene
Ethane
Ethyne
|
4 |
Which of the following is Ortho and Para directing group |
-I
-CHO
-COR
-NH<sub>2</sub>
|
5 |
During Nitration of Benzene the active nitrating agent is |
NO<sub>3</sub>
NO<sub>2</sub><sup>+</sup>
NO<sub>2</sub>
HNO<sub>3</sub>
|
6 |
The structure of Benzene is |
Hexagonal irregular
Tetrahedral
Trigonal planner
Hexagonal planner
|
7 |
The resonating contributing structures of Benzene are |
2
3
5
7
|
8 |
Aromatic hydrocarbons are the derivatives of |
Normal series of paraffins
Alkene
Benzene
Cyclohexane
|
9 |
The presence of a double bond in a compound is the sign of. |
Saturation
Unsaturation
Substitution
None of these
|
10 |
Which one of the following gases is used for artificial ripening of fruits |
Ethene
Ethyne
Methane
Propane
|
11 |
When methane reacts with Cl2in the presence of diffused light the products obtained are |
Chloroform only
Carbon tetrachloride only
Chloromethane and dichloromethane
Mixture of a, b, c
|
12 |
The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule |
Hund's rule
Markownikov's rule
Pauli's Exclusion Principle
Aufbau Principle
|
13 |
Vinyl acetylene combines with HCl to form |
Polyacetylene
Benzene
Chloroprene
Divinyl acetylene
|
14 |
Formula of chloroform is |
CH<sub>3</sub>Cl
CCl<sub>4</sub>
CH<sub>2</sub>Cl<sub>2</sub>
CHCl<sub>3</sub>
|
15 |
Which gas is used for artificial ripening of fruits |
Ethene
Metheane
Propane
Ethyne
|
16 |
Synthetic rubber is made by polymerization of |
Vinylaecetate
Acetylene
Divinylacetylene
Chloroprene
|
17 |
Which compound is the most reactive |
Benzene
Ethene
Ethane
Ethyne
|