NIPER 2018
1. Bromhexine produces its effects by:
(a) Blocking the cough center
(b) Depolymerization of the mucopolysaccharides
(c) Desensitizing the lung’s stretch receptors
(d) Reflexly increase the bronchial secretion and by irritating the gastric mucosal surface
2. When is the “World Diabetes Day” celebrated?
(a) November 14
(b) 1 December
(c) 10 October
(d) 4 February
3. Identify the incorrect statement(s) about furan.
(a) Furan gives electrophilic substitution reaction faster than benzene
(b) Furan does not give Diels–Alder reaction
(c) Furan is less aromatic than benzene
(d) Furan gives poly bromination with Br₂ in non-alcoholic solvents
4. When 3-iodo-3-ethylpentane is treated with sodium methoxide in methanol, the major organic product is an ____ that is
generated through an ____ mechanism.
(a) ether, SN2
(b) ether, SN1
(c) alkene, E2
(d) alkene, E1
5. The NMR signal from a proton that has three proton neighbours, equivalent to each other but different from itself, will be split
into a:
(a) doublet
(b) triplet
(c) quartet
(d) quintet
6. Mitochondria:
(a) utilize the Calvin–Benson cycle
(b) utilize the citric acid cycle
(c) reduce organic compounds to CO₂
(d) all of the above
7. How many signals would the propane give in a proton NMR spectrum?
(a) 2
(b) 3
(c) 4
(d) 5
8. Who discovered oxygen?
(a) Henry Cavendish
(b) Joseph Priestley
(c) Daniel Rutherford
(d) Joseph Black
9. Which one of the following substituents is meta directing in electrophilic aromatic substitution reactions?
(a) CN
(b) OH
(c) CH₃
(d) Br
10. Mercury poisoning antidote is all of the following EXCEPT:
(a) DMSA
(b) D-penicillamine
(c) dimercaprol
(d) thiomersal
ANSWER KEY
| 1-b | 2-a | 3-b | 4-c | 5-c | 6-b | 7-c | 8-b | 9-a | 10-d |
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