Pharmaceutical Organic Chemistry 3 MCQs

P

Priyanka Tomar • 29.31K Points
Instructor II

Q 11. Thiophene on catalytic reduction with large amount of palladium (Pd) gives_________.

(A) 2 – thiolen
(B) 3 – thiolen
(C) n – Butane
(D) Tetra hydro thiophene

V

Vikash Gupta • 27.68K Points
Instructor II

Q 12. What would be the reducing agent for the following reduction of thiophene?

(A) Na + ammonia
(B) Hydrogen gas + Ni
(C) Pd + ammonia
(D) Pd + Hydrogen gas

V

Vinay • 22.73K Points
Instructor III

Q 13. Identify the reaction:

(A) Reimer Tiemann reaction
(B) Canizzaro reaction
(C) Vilsmeir – Hoack reaction
(D) Benzoin condensation

V

Vinay • 22.73K Points
Instructor III

Q 14. Bromination of thiophene by using Bromine in benzene will produce________

(A) 5 – bromo thiophene
(B) 3- bromo thiophene
(C) 2 – bromo thiophene
(D) 2,5 – di bromo thiophene

P

Priyanka Tomar • 29.31K Points
Instructor II

Q 15. Chlorination of thiophene by using Chlorine at 243K will form__________.

(A) 2- chloro thiophene + 5- chloro thiophene
(B) 2,5 – dichloro thiophene
(C) 2- chloro thiophene + 2,5- dichloro thiophene
(D) Tetra chloro thiophene

P

Priyanka Tomar • 29.31K Points
Instructor II

Q 16. What will be the product of the following reaction?

(A) 5 – bromo thiophene
(B) 3- bromo thiophene
(C) 2 – bromo thiophene
(D) 2,5 – di bromo thiophene

A

Admin • 31.08K Points
Instructor I

Q 17. What will be the product of the following reaction?

(A) 2- iodo thiophene
(B) 2,5 – di iodo thiophene
(C) 2,3 – di iodo thiophene
(D) Tetra iodo thiophene

P

Priyanka Tomar • 29.31K Points
Instructor II

Q 18. Complete the reaction:

(A) Cl2
(B) SO3 + HCl
(C) Cl2 + HCl
(D) SO2Cl2

R

Ram Sharma • 192.10K Points
Coach

Q 19. Chloromethylation of thiophene is carried out with HCHO & HCl, it will produce_______.

(A) 2- chloromethyl thiophene
(B) 2- methyl thiophene
(C) 2- chloro thiophene
(D) 2-chloro, 5- methyl thiophene

V

Vikash Gupta • 27.68K Points
Instructor II

Q 20. Sulfonation of thiophene can be carried out by using______________.

(A) SO3 +Conc. HCl
(B) Dilute Sulphuric acid
(C) Concentrated Sulphuric acid
(D) SO3 + HNO3

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