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1. Rifampicin acts by inhibiting which of the enzymes?

A. DNA dependent RNA polymerase B. DNA polymerase C. Mycolic synthase D. Arabinosyl transferase

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2. What is the meaning of solubility of 1 part in 100-1000 parts of solvent?

A. Sparingly Soluble B. Slightly Soluble C. Very Slightly Soluble D. Practically Insoluble

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3. In 2014, Bharat Ratna award was given to:

A. Sachin Tendulkar B. Atal Bihari Vajpayee C. C.N.R. Rao D. Madan Mohan Malviya

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4. Venkatraman Ramakrishnan was awarded Nobel Prize in 2009 in chemistry for studying the structure and functions of:

A. Ribosome B. Nucleosome C. Spliceosome D. Graphine

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5. In genetic code, codon degeneracy occurs at ___ position of codon.

A. First B. Second C. Third D. First or third

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6. Which scientist coined the term antibiotic?

A. Fleming B. Domagk C. Ehrlich D. Waksman

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7. The deficiency of vitamin A in humans leads to:

A. Sterility B. Rickets C. Night blindness D. Scurvy

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8. Who is a brand ambassador of pulse polio campaign in India?

A. Amitabh Bachchan B. Amir Khan C. Akshay Kumar D. Yuvraj Singh

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9. Starting material for synthesis of sulfadiazine is:

A. 2-Aminopyrimidine B. 4-Aminopyrimidine C. 5-Aminopyrimidine D. 6-Aminopyrimidine

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10. Vaccine against Zika virus was developed first by which Indian company?

A. Bharat Biotech Int. Ltd. B. Serum Institute of India C. Shantha Biotechnics D. Dr. Reddy's Lab

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11. The process of purification and recovery of a product in biotechnology is known as:

A. Upstream processing B. Downstream processing C. Incubation D. Formulation

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12. Antimicrobials that block protein synthesis by binding to the mRNA are:

A. Aminoglycosides B. Antisense nucleic acids C. Macrolides D. Nucleic acid analogs

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13. The UV cut off for chloroform is:

A. 190 nm B. 205 nm C. 215 nm D. 240 nm

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14. An SN2 reaction of an asymmetric carbon always gives:

A. An enantiomer of the substrate B. A product of opposite optical rotation C. A mixture of diastereomers D. A single stereoisomer

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15. Which drug is not a nucleoside analog?

A. Lamivudine B. Zidovudine C. Nevirapine D. Acyclovir

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16. 2-Butyne can be selectively reduced to trans-2-butene using:

A. H₂, Pd/C B. H₂, Pd/CaCO₃, quinoline C. LiAlH₄ D. Na/liq.NH₃

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17. In plant tissue culture, differentiation of callus to root requires:

A. High auxin and low cytokinin B. Low auxin and high cytokinin C. Low auxin and low cytokinin D. High auxin and high cytokinin

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18. Which one of the following statements is NOT correct for the classification of carbohydrates?

A. Dihydroxyacetone and glyceraldehyde are trioses. B. Galactose and glucose are hexoses. C. Mannose and fructose are pentoses. D. Erythrose and threose are tetroses.

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19. In gram staining of gram-negative bacteria, the crystal violet-iodine complex formed will be washed away after addition of:

A. Safranin solution B. Ethyl acetate C. Water D. Alcohol

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20. 'H nuclei located near electronegative atoms tend to be ___ relative to 'H nuclei which are not:

A. Shielded B. Deshielded C. Resonanced D. Split