| 1 |
Which of the following species is ortho and para director. |
- A. CHO
- B. SO3H
- C. NO2
- D. Cl
|
| 2 |
Which compound is the most reactive one |
- A. benzene
- B. ethene
- C. ethane
- D. ethyne
|
| 3 |
Which one of the following species is meta director if present at benzene ring. |
- A. -NO2
- B. -Cl
- C. -CH3
- D. -OH
|
| 4 |
Aromatic hydrocarbons are the derivatives of |
- A. Normal series of paraffins
- B. Alkene
- C. Benzene
- D. Cyclohexane
|
| 5 |
The aromatic ring of Benzene can be hydrogenated in the presenc eof. |
- A. Pt
- B. Rh
- C. Sunlight
- D. O3
|
| 6 |
When acetylene is heated at 300 <sup>o</sup>C in copper tube, the product obtained is. |
- A. Benzene
- B. Alkyl benzene
- C. Ether
- D. Alcohol
|
| 7 |
Phenol when distilled with zinc dust gives. |
- A. Toluene
- B. Benzaldehyde
- C. Benzoic acid
- D. Benzene
|
| 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 |
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
|
| 10 |
The benzene molecule contains |
- A. three double bonds
- B. two double bonds
- C. one double bond
- D. delocalized pie-electron charge
|
