Each question carries +4 marks Time: 2 days Each wrong question carries -2 marks MM: 60 More than one answers may be correct

1. Assignment -3: Basic Course in Chemistry
Dr. Mohd Kamil Hussain
Department of Chemistry, Govt Raza PG College Rampur
Instructions:
 Each question carries +4 marks Time : 2 days
 Each wrong question carries -2 marks MM: 60
 More than one answers may be correct
Part-3 : Aromatic Substitution
1. Aromatic compounds give
(a) Electrophilc substitution reactions (b) Nucleophilic substitution reactions
(c) Electrophilc addition reactions (d) Nucleophilic addition reactions
2. Formation of arenium ion or σ complex takes place during
(a) SEAr reactions (b) SNAr reactions
(c) Electrophilc addition reactions (d) Nucleophilic addition reactions
3. Formation of Meisenheimer complex takes place during
(a) SEAr reactions (b) SNAr reactions
(d) Electrophilc addition reactions (d) Nucleophilic addition reactions
4. Which one of the following compound is most active for electrophilic substitution
(a) Benzene (b) Nitrobenzene (c) Chlorobenzene (d) Toluene
5. Which one of the following compound is least active for electrophilic substitution
(a) Benzene (b) Nitrobenzene (c) Chlorobenzene (d) Toluene
6. Which one of the following compound does not give Friedal and Craft reaction
(a) Benzene (b) Nitrobenzene (c) Chlorobenzene (d) Toluene
7. Which one of the following is not an aromatic species
(a) Benzene (b) Nitrobenzene (c) Cyclobutadiene (d) Tropolium ion
8. Gatterman-Koch Formylation reaction is an example of
(a) Electrophilc substitution reactions (b) Nucleophilic substitution reactions
(c) Electrophilc addition reactions (d) Nucleophilic addition reactions
9. Electrophile generated in Reimer-Tiemann reaction is
(a) :CCl2 (b) -
CCl3 (c) +
CCl2 (d) +
CHO
10. Active electrophile in chlorination of benzene is
(a) Cl+
(b) Cl-
(c) Cl.
(d) Cl

2. 11. Given organic reaction is an example of
(a) Gatterman-Koch Formylation (b) Reimer-Tiemann reaction
(c) Vilsmeier -Haack formylation (d) Houben-Hoesch reaction
12. Identify the major product
13. Identify the product C of given reaction sequence
14. Which one of the following reacts rapidly with water
15. Which one of the following does not give test with Aq NaHCO3