NIPER 2017
1. Which of the following compounds containing chiral carbons is optically inactive?
(a) (R)-Lactic acid
(b) (R,R)-Tartaric acid
(c) (R,S)-Tartaric acid
(d) Glycine
2. An important intermediate in the biosynthetic pathway to aromatic amino acids is:
(a) α-Ketoglutarate
(b) Inosine
(c) Orotate
(d) Shikimate
3. The number of isomers of glucose:
(a) 4
(b) 8
(c) 12
(d) 16
4. Identify a uterine relaxant:
(a) Dinoprostone
(b) Oxytocin
(c) Magnesium sulfate
(d) Ergotamine
5. Ethylene oxide sterilized products require ____ hours of aeration at 140°F:
(a) 12
(b) 10
(c) 8
(d) Cannot be aerated at 140°F
6. When did the Right to Information Act come into force?
(a) 2003
(b) 2005
(c) 2009
(d) 2014
7. Acetylenic protons are shielded due to ____ effect.
(a) Inductive
(b) Hybridization
(c) Resonance
(d) Diamagnetic anisotropic
8. The base peak in EI-MS of acetophenone is:
(a) 120
(b) 105
(c) 77
(d) 65
9. The reference compound used in ESR spectroscopy is:
(a) diphenylpicrylhydrazyl radical
(b) diphenylpicryl hydrazine
(c) diphenylpicrylhydrazine dehydrate
(d) diphenylpicrylhydrazinium iodide
10. Short sequence of DNA used for identification of complementary sequence is called as:
(a) Probe
(b) Marker
(c) Adapter
(d) Expressed sequence tag
ANSWER KEY
| 1-c | 2-d | 3-d | 4-c | 5-c | 6-b | 7-d | 8-b | 9-d | 10-a |
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