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Q 1/50
Score 0
1. In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters?
30
Absorption
Volume
Transmittance
Wavelengths
Q 2/50
Score 0
If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a short time, the phenomenon is termed as which of the following?
30
Luminescence
Spontaneous emission
Phosphorescence
Fluorescence
50 questions
Q.
1. In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters?
1
30 sec
Q.
If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a short time, the phenomenon is termed as which of the following?
2
30 sec
Q.
In Flame emission photometers, the measurement of _____________ is used for qualitative analysis.
3
30 sec
Q.
Which of the following is the advantage of prism monochromators?
4
30 sec
Q.
Which of the following is not an application of Flame emission photometers?
5
30 sec
Q.
The piece of the microscope that gathers and focuses light on the specimen being viewed is known as
6
30 sec
Q.
The part that works to reflect the light for the microscope is known as
7
30 sec
Q.
Which of the following is the principle of Flame emission photometers?
8
30 sec
Q.
Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?
9
30 sec
Q.
Resolving power of a microscope is a function of ____________
10
30 sec
Q.
Which of the following is not the advantage of Fourier Transform Spectrometers?
11
30 sec
Q.
Why is the computer necessary in Fourier Transform Spectrometer?
12
30 sec
Q.
Which of the following component of the light microscope illuminates the specimen by gathering diffuse rays from the light microscope?
13
30 sec
Q.
Colorimeters are used in applications where great accuracy is required.
14
30 sec
Q.
In the diagram of single beam photometer given below, identify the component that is not marked.
15
30 sec
Q.
Which of the following is a source used in spectroscopy?
16
30 sec
Q.
--------broadly deals with the study of the phenomenon of light absorption by molecules in solution.
17
30 sec
Q.
As per Beer-Lamberts law the amount of light absorbed depends on the ---- of the absorbing molecules.
18
30 sec
Q.
The ultraviolet region of the electromagnetic spectrum --
19
30 sec
Q.
The visible region of the electromagnetic spectrum --
20
30 sec
Q.
1. Chromatography is a physical method that is used to separate and analyse __________
21
30 sec
Q.
1. Column chromatography is based on the principle of _______________
22
30 sec
Q.
1. For the separation of which of the following substances, Gas-solid chromatography is being used?
23
30 sec
Q.
1. The principle on which thin layer chromatography is based is that the ____________
24
30 sec
Q.
1. The eluent strength is a measure of-------in HPLC
25
30 sec
Q.
1. on-exchange resin is ____________
26
30 sec
Q.
2.Which of the following ion get released from the cation exchange column?
27
30 sec
Q.
3.. Which of the following ion get released from the anion exchange column?
28
30 sec
Q.
4.Ion-exchange chromatography is used for the separation of
29
30 sec
Q.
5. The residual hardness in ion-exchange process is ____________
30
30 sec
Q.
6. A gradient elution in HPLC is one in which the composition of the solvent-----
31
30 sec
Q.
7. An isocratic elution in HPLC is one in which the composition of the solvent
32
30 sec
Q.
8. HPLC column are generally made of ---------
33
30 sec
Q.
9. The commonly used HPLC detector are---------
34
30 sec
Q.
10. The size of a thin layer of adsorbent is about ____________
35
30 sec
Q.
11.The eluant filled in the closed jar is ____________
36
30 sec
Q.
12.The chromaplate or thin layer chromatography plate is made up of ____________
37
30 sec
Q.
13.Which temperature is required for activation of plate ?
38
30 sec
Q.
2.Which of the following is the disadvantage of helium, which can be used as carrier gas in gas chromatography?
39
30 sec
Q.
3.Slow injection of large samples leads to band broadening and loss of resolution.
40
30 sec
Q.
4.Capillary columns are open tubular columns constructed from which of the following materials?
41
30 sec
Q.
5. Which of the following is the commonly used support material for the packed column in gas chromatography?
42
30 sec
Q.
2.Arrange the following compounds in order of their increasing adsorption tendencies.
43
30 sec
Q.
3. Which of the following is separated through column chromatography?
44
30 sec
Q.
4. What is the factor responsible for the separation in column chromatography?
45
30 sec
Q.
5. The mixture of petroleum ether and benzene is used in the elution ratio of ____________
46
30 sec
Q.
2.In which type of chromatography, the stationary phase held in a narrow tube and the mobile phase is forced through it under pressure?
47
30 sec
Q.
3.In chromatography, the stationary phase can be ___________ supported on a solid.
48
30 sec
Q.
4. In chromatography, which of the following can the mobile phase be made of?
49
30 sec
Q.
5.Chromatography cannot be used to separate delicate products.
