---

1. NMR spectrum of diethyl ether shows:

A. One signal as singlet B. Two signals, each as singlet C. Two signals, each as doublet D. Two signals, one as quartet and one as triplet

---

2. The enzyme needed to produce cDNA from an mRNA transcript is:

A. Restriction endonuclease B. Reverse transcriptase C. Ligase D. RNA polymerase

---

3. Coumarin is:

A. 2H-Chromen-2-one B. 4H-Chromen-4-one C. 2H-Chromene D. 2H-1-Benzopyran

---

4. The potassium channel opener is:

A. Retigabine B. Lesinurad C. Edoxaban D. Ivabradine

---

5. Conversion of tryptophan to serotonin involves which set of reactions?

A. Hydroxylation and amination B. Hydroxylation and decarboxylation C. Decarboxylation and amination D. Decarboxylation and β-hydroxylation

---

6. The red color of red chili is because of:

A. Capsanthin B. Capsaicin C. Camptothecin D. Crocin

---

7. Identify the (-)ssRNA filovirus that was in the news recently:

A. Swine flu B. Ebola C. Dengue D. Zika

---

8. Which of the following are "concerted" reactions?

A. SN1 and SN2 B. E1 and E2 C. SN1 and E1 D. SN2 and E2

---

9. For OTC oral products intended for children under 6 years of age, the recommended alcohol content limit is:

A. 0.20% B. 0.50% C. 0.80% D. 1.00%

---

10. The requirement and guidelines for contract research come in which Schedule?

A. Sch M B. Sch Y-1 C. Sch C D. Sch X

---

11. Which of the following alpha-glucosidase inhibitors is a polysaccharide?

A. Miglitol B. Viglibiose C. Acarbose D. Glucagon

---

12. Which receptor has a heptahelical structure?

A. Metabotropic B. Tyrosine kinase C. Ionotropic D. Nuclear

---

13. Which of the parenchymal cells have the deposition of lignin?

A. Chlorenchyma B. Collenchyma C. Sclerenchyma D. Epidermis

---

14. Choose the lettered pair that expresses a relationship most similar to the capitalized pair:
LACHRYMOSE: TEARS

A. Effusive: Requests B. Ironic: Jests C. Morose: Speeches D. Verbose: Words

---

15. Which gas is used in the determination of true density in a pycnometer?

A. Argon B. Helium C. Oxygen D. CFC

---

16. Weak bands at 2750 and 2850 cm⁻¹ seen in the IR spectrum of aldehydes are because of:

A. Fundamental vibrations B. Conjugation C. Overtone D. Fermi resonance

---

17. Bt cotton is:

A. A cotton variety obtained by crossing two different cotton plants B. A cotton variety brought from South America C. An insecticide sprayed on a cotton plant D. A transgenic cotton variety

---

18. RNA interference works on the principle:

A. RNA interference B. Silencing of a specific mRNA C. Prevents translation of RNA D. RNA destruction

---

19. The enzyme used in PCR is:

A. Taq polymerase B. PRPP synthetase C. Reverse transcriptase D. Primase

---

20. DNA Fingerprinting was developed by:

A. Alec Jeffreys B. Werner Arber C. Hamilton Smith D. Daniel Nathans