| 1 |
The reactivity of Grignard's regent is due to |
- A. Polarity of Mg-x bond
- B. Polarity of C-Mg bond
- C. Electro negativity of halogen atom
- D. Presence of Mg-atom
|
| 2 |
Which one of the following species is not an electrophile. |
- A. HN3
- B. Br
- C. H+
- D. BF3
|
| 3 |
What products is formed when ethyl bromide reacts with magnesium to form Grignard's reagent. |
- A. Pyridine
- B. Anhydrous ether
- C. Ethyl alcohol
- D. Carbon tetrachloride
|
| 4 |
Elimination Bimolecular reactions involve |
- A. Second order kinetics
- B. First order kinetics
- C. Third order kinetics
- D. Zero order kinetics
|
| 5 |
Which products is not formed when ethyl alcohol reacts with SOCl2 in the presence of pyridine. |
- A. Ethyl chloride
- B. Hydrogen chloride
- C. Sulphur di oxide
- D. Sulphur tri oxide
|
| 6 |
Which alkyl halide does not form Grignard's reagent. |
- A. CH3-Br
- B. CH3-Cl
- C. CH3- F
- D. CH3-I
|
| 7 |
In primary alkyl halides, the halogen atom is attached to a carbon which is further attached to how many carbon atoms |
- A. Two
- B. Three
- C. One
- D. Four
|
| 8 |
------------------- is not a nucleophile |
- A. H<sub>2</sub>O
- B. NO<sub>3</sub>
- C. BF<sub>3</sub>
- D. NH<sub>3</sub>
|
| 9 |
For which mechanisms, the first step involved is the same. |
- A. E2 and E2
- B. E2 and SN2
- C. SN1 and E2
- D. E1 and SN1
|
| 10 |
Which one of the following is not a nucleophile. |
- A. H2O
- B. H2S
- C. BF3
- D. NH3
|