NIPER-JEE MIX QUESTIONS
QUIZ NO 23
TOTAL QUESTIONS = 20
1. The reference compound used in ESR spectroscopy is
A. Diphenylpicrylhydrazyl radical
B. Diphenylpicrylhydrazine dehydrate
C. Diphenylpicrylhydrazine
D. Diphenylpicrylhydrazinium iodine
2. The liver receives blood supply from the GIT via the
A. portal artery
B. hepatic vein
C. portal vein
D. hepatic artery
3. 'H nuclei located near electronegative atoms tend to be ___ relative to 'H nuclei which are not:
A. Deshielded
B. Shielded
C. Split
D. Resonanced
4. Kₑ is calculated in which phase?
A. Conjugation
B. Elimination
C. Absorption
D. Both absorption and elimination
5. Vulcanizing agent for rubber is…………….
A. Zinc
B. Sulphur
C. CaCO3
D. Sulphur dioxide
6. 2-Butyne can be selectively reduced to trans-2-butene using:
A. H₂, Pd/C
B. LiAlH₄
C. Na/liq.NH₃
D. H₂, Pd/CaCO₃, quinoline
7. Cycloserine acts by _____________
A. Interferes with regeneration of lipid carries by blocking dephosphrylation
B. Inhibit transpeptidation cross linking by blocking binding to PBPs
C. Competitive inhibition 2 terminal alanines to initial tripeptide side chain on N-AMA
D. Prevent addition to the growing end of the peptidoglycan
8. Contact angle for complete wetting is ________
A. 0
B. 180
C. 90
D. 60
9. Carbylamine reaction is a test for:
A. Primary amine
B. Tertiary amine
C. Secondary amine
D. Quaternary ammonium salt
10. Cyclohaxanone on reduction gives ________
A. Cyclohexene
B. None
C. Cyclohexadiol
D. Cyclohexanol
11. Which of the following types of metabolism do drugs with a high extraction ratio undergo to a significant extent
A. intraluminal
B. nonlinear
C. zero-order
D. first-pass
12. Method of sterilization of talc?
A. Steam sterilization
B. Dry heat sterilization
C. Ionizing radiation
D. Ethylene oxide sterilization
13. Which of the following is false about glycolysis?
A. It is essential for brain
B. Lactate is the end product of aerobic condition
C. It occurs in both aerobic and anaerobic condition
D. It is the major pathway for ATP production in tissue lacking mitochondria
14. Vitamin P is:
A. Retinoids
B. Pantothenic acid
C. Flavonoids
D. Ascorbic acid
15. On the surface of Pd, hydrogen exists as
A. H⁺
B. H
C. H₂
D. H⁻
16. What is m/z ratio for butyrophenone according to Mac-lafferty arrangement?
A. 106
B. Both (a) and (b)
C. 120
D. 110
17. Mercury poisoning antidote is all of the following EXCEPT
A. DMSA
B. thiomersal
C. dimercaprol
D. D-penicillamine
18. Which of the following is directly compressible polymer?
A. Avicel
B. DI-Tab
C. PVP
D. HPMC
19. In absorption spectrometry, high values of absorbance values (greater than 1 or 2) tend to give poorer precision because
A. Too much light saturates the detector
B. Little light reaches the detector
C. Beer's law deviations are worse
D. Monochromators work poorly under intense light
20. Antonym for mountain is
A. Peak
B. Valley
C. Hummock
D. Mound
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