| 1 |
During nitration of benzene, the active nitrating agent is |
- A. NO<sub>3</sub>
- B. NO<sub>2</sub><sup>+</sup>
- C. NO<sub>2</sub><sup>-</sup>
- D. HNO<sub>3</sub>
|
| 2 |
The electrophile in Aromatic sulphonation is |
- A. H<sub>2</sub>SO<sub>4</sub>
- B. HSO<sub>4</sub><sup>1-</sup>
- C. SO<sub>3</sub>
- D. SO<sub>3</sub><sup>1+</sup>
|
| 3 |
Which of the following species is ortho and para director. |
- A. CHO
- B. SO3H
- C. NO2
- D. Cl
|
| 4 |
The difference of actual and theoretical heat of hydrogenation of compound is called. |
- A. Lattice energy
- B. Resonance energy
- C. Ionization energy
- D. Enthalpy of formation
|
| 5 |
The benzene molecule contains |
- A. three double bonds
- B. two double bonds
- C. one double bond
- D. delocalized pie-electron charge
|
| 6 |
Which of the following is Ortho and Para directing group |
- A. -I
- B. -CHO
- C. -COR
- D. -NH<sub>2</sub>
|
| 7 |
Effect of substituent on benzene ring is due to |
- A. Resonance
- B. Inductive effect
- C. Both a and b
- D. Neither a nor b
|
| 8 |
Aromatic compounds burns with sooty flame because. |
- A. They have high percentage of hydrogen
- B. The have a right structure
- C. The have high percentage of carbon
- D. The resist reaction with air
|
| 9 |
Main source of aromatic compound is |
- A. Petroleum
- B. Coaltar
- C. Living organisms
- D. Dead marine animals
|
| 10 |
The aromatic ring of Benzene can be hydrogenated in the presenc eof. |
- A. Pt
- B. Rh
- C. Sunlight
- D. O3
|
