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1. Restriction endonucleases enzymes used most in rDNA technology is of

A. Type I B. Type II C. Type III D. Type IV

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2. A standard HEPA filter must at least 99.95% or 99.97% of particles whose diameter is

A. equal to 0.3 μm B. less than 0.3 μm C. more than 0.3 μm D. All of the above

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3. The angle between the minute hand and the hour hand of a clock when the time is 4.20 is

A. 10° B. 5° C. 1° D. 0°

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4. A new gene produced by combination of portions of two or more coding sequences of different genes is

A. Chimeric genes B. Fusion genes C. recombinant genes D. cryptogene

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5. Quantity of NaOH needed to make 100 ml solution of 0.5 M strength is

A. 0.5 gm B. 1 g C. 2 gm D. 4 gm

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6. Which one of the following enzymes is present in the bacteriophage

A. Transcriptase B. Lysozyme C. Protease D. Urease

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7. A is two years older than B who is twice as old as C. If the total ages of A, B and C be 27, what is the age of B

A. 8 years B. 10 years C. 12 years D. 14 years

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8. Which of the following polymer is used as ion exchange

A. Cross-linked polystyrene B. Cross-linked polymethylacrylate C. Cross-linked dextran D. Cross-linked agarose

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9. DPCO is implemented by

A. NPPA B. CDSCO C. DCGI D. NLEM

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10. Kalmegh is bitter in taste due to

A. Forskolin B. Momordicin C. Withanolide D. Andrographolide

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11. Separation of ions in mass spectrometer take place on the basis of which of the following

A. Mass B. Charge C. Mass to charge ratio D. Molecular weight

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12. Which intermediate is formed in Wolff's reaction

A. Carbene B. Ketene C. Carbocation D. Carbanion

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13. The correct order of different types of energies is

A. Eel >> Evb >> Erot >> Etr B. Eel >> Erot >> Evb >> Etr C. Eel >> Evb >> Etr >> Erot D. Etr >> Evb >> Erot >> Eel

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14. Fuming sulphuric acid is the solution of –––––– % SO3 in conc. H2SO4

A. 10 B. 9 C. 8 D. 7

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15. Which of the following reactions are favoured by polar aprotic solvent

A. SN1 reactions B. SN2 reactions C. Both SN1 and SN2 reactions D. None of the mentioned

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16. Reaction of alcohol with SOCl2 is

A. SN1 B. SN2 C. SNAr D. SNi

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17. The energy associated with infra red is enough to make

A. electronic transitions B. vibrational and rotational transitions C. a full separation of the electron in the outer shell D. an electron move from an inner orbital

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18. Which messenger molecules are derived from arachidonic acid

A. Eicosanoids B. Terpenoids C. Corticoids D. Steroids

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19. Which crucial feature of a penicillin is involved in its mechanism of action

A. Carboxylic acid B. β-lactam ring C. Acyl side chain D. Thiazolidine ring

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20. Which of the following is a long-acting insulin analogue

A. Lispro B. Insulin aspart C. Glulisine D. Glargine