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Organic chemistry 2 for gpat exam || #niperexam #gpatexam
Organic chemistry 1
https://youtu.be/wIMlKCwDT3g?si=-KwGjpcRmj9o30ml
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https://youtu.be/wIMlKCwDT3g?si=-KwGjpcRmj9o30ml
#gpatexam2024
#pharmacology #gpatpreparation
#nursingstudent #pharmacystudy
#nursingexamprepration
#pharmacologymcqs #gdcgpat
#nursingschool #gdcclasses
#exitexamfordpharmacy…
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Forwarded from GPAT/NIPER study point
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6. The best sample holder for IR in liquid form is made of:
Anonymous Quiz
30%
A. Quartz
56%
B. Sodium chloride (NaCl)
13%
C. Glass
2%
D. Plastic
❤1
7. Stretching frequency increases with:
Anonymous Quiz
48%
A. Decreasing bond strength
12%
B. Heavier atoms
31%
C. Higher bond order
9%
D. Lower electronegativity
8. Which radiation source is used in IR spectroscopy?
Anonymous Quiz
14%
A. Tungsten lamp
19%
B. Deuterium lamp
58%
C. Globar (silicon carbide rod)
9%
D. Hydrogen lamp
9. The function of a monochromator in IR is to:
Anonymous Quiz
8%
A. Produce radiation
17%
B. Focus the beam
73%
C. Select a specific wavelength
2%
D. Detect vibration
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10. Golay cell detector works based on:
Anonymous Quiz
30%
A. Heat expansion of gas
21%
B. Light emission
41%
C. Electrical conductivity
8%
D. Resonance frequency
👍1
11. Pyroelectric detectors operate by:
Anonymous Quiz
10%
A. Thermoelectric effect
15%
B. Change in dielectric constant
72%
C. Pyroelectric effect (temp-dependent voltage)
3%
D. Heat fusion
👍1
12. A Bolometer detects IR radiation by measuring:
Anonymous Quiz
9%
A. Voltage
79%
B. Resistance change due to heating
11%
C. Emission
2%
D. Density
13. IR spectroscopy is NOT suitable for:
Anonymous Quiz
33%
A. Non-polar molecules
20%
B. Polar molecules
24%
C. Organic compounds
22%
D. Functional group analysis
14. Flame photometry works on the principle of:
Anonymous Quiz
12%
A. Absorption of UV light
10%
B. Light scattering
72%
C. Emission of radiation by excited atoms
6%
D. Fluorescence
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15. Which elements are commonly estimated using flame photometry?
Anonymous Quiz
54%
A. Calcium, sodium, potassium
29%
B. Chlorine, iodine, bromine
13%
C. Sulfur, nitrogen
5%
D. Phosphorus, carbon
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16. Interference in flame photometry can occur due to:
Anonymous Quiz
9%
A. Absorption shifts
21%
B. Chemical background
9%
C. Matrix effects
61%
D. All of the above
17. Which flame is commonly used in flame photometry?
Anonymous Quiz
23%
A. Hydrogen-air
42%
B. Oxygen-nitrogen
28%
C. Acetylene-air
7%
D. Butane-air
19. Which of the following is used as a radiation source in AAS?
Anonymous Quiz
29%
A. Tungsten filament lamp
11%
B. Laser
50%
C. Hollow cathode lamp
9%
D. Mercury vapor lamp
20. What kind of interferences affect AAS accuracy?
Anonymous Quiz
6%
A. Spectral
9%
B. Chemical
14%
C. Ionization
71%
D. All of the above
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21. What is the atomizer used in AAS?
Anonymous Quiz
26%
A. Nebulizer
12%
B. Quartz cell
55%
C. Flame or graphite furnace
8%
D. Monochromator
❤2👍1
22. The detector in AAS measures:
Anonymous Quiz
19%
A. Emission intensity
58%
B. Transmitted light intensity
16%
C. Scattered light
7%
D. Fluorescence
23. Nephelometry measures:
Anonymous Quiz
18%
A. Transmitted light
11%
B. Absorbed light
68%
C. Scattered light at an angle
3%
D. Refracted light
24. Turbidometry differs from nephelometry by measuring:
Anonymous Quiz
20%
A. Scattered light
11%
B. Light absorbed
65%
C. Transmitted light reduction
4%
D. Light emission
👍3