1
Which of the following could be used as the layer of dielectric in interference filters used in Absorption Spectroscopy?
A)
Graphite
B)
MgF2
C)
Fe
D)
AgNO3
Answer & Solution
Answer: Option
B
2
In Atomic Absorption Spectroscopy, with what material is the cathode in Hollow cathode lamp constructed?
A)
Tungsten
B)
Quartz
C)
Element to be investigated
D)
Aluminium
Answer & Solution
Answer: Option
C
3
Atomic absorption spectroscopy is also called as Absorption Flame Photometry.
A)
True
B)
False
Answer & Solution
Answer: Option
A
4
Transmittance is given as $$T = \frac{P}{{{P_o}}}.$$ If Po is the power incident on the sample, what does P represent?
A)
Radiant power transmitted by the sample
B)
Radiant power absorbed by the sample
C)
Sum of powers absorbed and scattered
D)
Sum of powers transmitted and reflected
Answer & Solution
Answer: Option
A
5
How is the wave number of electromagnetic radiation related to wavelength?
A)
It is the reciprocal of wavelength
B)
It is directly proportional to wavelength
C)
It is not related to wavelength
D)
It is equal to wavelength
Answer & Solution
Answer: Option
A
6
In Flame emission photometers, the measurement of . . . . . . . . is used for qualitative analysis.
A)
Colour
B)
Intensity
C)
Velocity
D)
Frequency
Answer & Solution
Answer: Option
A
7
What is the unit of absorbance which can be derived from Beer Lambert's law?
A)
L mol-1 cm-1
B)
L gm-1 cm-1
C)
Cm
D)
No unit
Answer & Solution
Answer: Option
D
8
Match the items in
Group I with
Group II .
Group I Group II
P. Circular dichroism
1. Concentration
Q. X-ray crystallography
2. Sedimentation coefficient
R. Freeze-drying
3. Secondary structure determination
S. Ultracentrifugation
4. Tertiary structure determination
A)
P-4, Q-1, R-2, S-3
B)
P-1, Q-4, R-3, S-2
C)
P-2, Q-3, R-4, S-1
D)
P-3, Q-4, R-1, S-2
Answer & Solution
Answer: Option
D
9
Bolometer, a type of detector, is also known as . . . . . . . .
A)
Resistance temperature detector (RTD)
B)
Thermistor
C)
Thermocouple
D)
Golay cell
Answer & Solution
Answer: Option
B
10
To tolerate high operating temperatures, which of the following has to be done in incandescent or tungsten filament lamps?
A)
Alloys must be used
B)
Nitrogen be used instead of inert gas
C)
Envelope is fabricated with quartz
D)
Envelope is fabricated with copper
Answer & Solution
Answer: Option
C
