NIPER-JEE-QUESTION-PAPER-2014
QUIZ NO 3
TOTAL QUESTIONS = 20
1. Chromolyn sodium inhibits mast cell degranulation, probably, by inhibiting:
A. Ca++ influx
B. Na+ influx
C. K+ influx
D. Cl- influx
2. Which of the following substances does NOT function as a Lewis acid?
A. (CH3)3C+
B. (CH3)3N
C. BF3
D. AlBr3
3. Which of the following is a most likely fragment ion formed at m/z = 57?
A. CH3 CH2+
B. CH3 CH2CH2CH2+
C. CH3CH2CH2+
D. CH+=CH2
4. Which of the following statements is true about the molecular ion? Molecular ion is a compound that:
A. has lost a pair of electrons
B. has gained one electron
C. has lost one electron
D. carries a free radical and a negative charge
5. The blood pressure-lowering effect of captopril is reduced by which drug?
A. Icatibant
B. Losartan
C. Nalorphine
D. Agrobatan
6. Drug used in heparin overdose is:
A. Protamine
B. Phylloquinone
C. Ticlopidine
D. Clopidogrel
7. Cetuximab acts on which molecular target?
A. VEGF
B. EGFR
C. CD20
D. CD52
8. Which of the following drug delivery systems comprises a core composed of hydrophilic groups?
A. Liposomes
B. Micelles
C. Reverse micelles
D. None of the above
9. Measuring zeta potential is useful in determining which property of a liquid formulation?
A. Viscosity
B. Stability
C. Solubility
D. Particle size
10. Cholesteryl esters behave as _____ liquid crystals.
A. Metallotropic
B. Lyotropic
C. Thermotropic
D. None of the above
11. When wetting is complete, what is the contact angle q?
A. q = 0
B. q = 90
C. q = 180
D. 90 < q < 180
12. Which exotoxin binds to inhibitory neurons, blocking the release of glycine, and resulting in twitching paralysis?
A. Diphtheria toxin
B. Tetanus toxin
C. Botulinum toxin
D. Cholera toxin
13. Nylon 6 is a polymer of:
A. hexamethylenediamine and adipic acid
B. caprolactam
C. maleic anhydride and hexamethylenediamine
D. sebacic acid and hexamethylenediamine
14. Which of the following changes corresponds to an energy change in quantum number that is too small to be observed by spectroscopy?
A. Translational
B. Vibrational
C. Rotational
D. Electronic
15. The plant group which yields 'Taxol' belongs to:
A. Bryophyte
B. Gymnosperm
C. Pteridophyte
D. Lichen
16. A company is dumping a product if it exports at a price which is _____ that the price it sells at in its own home market.
A. higher
B. lower
C. marginally higher
D. equal to
17. What is the driving force for colligative properties like freezing point depression?
A. Entropy
B. Enthalpy
C. Internal energy
D. Work
18. Which condition favors positive deviations from Raoult's Law?
A. Strong solute-solute interactions
B. Strong solute-solvent interactions
C. Weak solute-solvent interactions
D. Weak solute-solute interactions
19. Which of the following densities of a given powder sample is the largest?
A. Bulk
B. True
C. Tap
D. Granule
20. For adults, the ethanol content limit for oral OTC solution products is:
A. 0.5%
B. 1.5%
C. 5%
D. 10%
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