Chemical Technology MCQs

By: Prof. Dr. Fazal Rehman | Last updated: November 27, 2024

1. Which of the following is the eluant filled in the closed jar?
(A). Mixture of liquids
(B). Mixture of gases
(C). Both of A and B
(D). Mixture of a gas and a liquid
(E). None of these
Multiple Choice Question Answer: a

2. In terms of which one the relative adsorption of each component of the mixture is expressed?
(A). Acceleration factor
(B). Both of these
(C). Acceleration and retardation factor
(D). None of these
(E). Retardation factor
Multiple Choice Question Answer: e

3. Which of the following is the size of a thin layer of adsorbent?
(A). 0.6 mm
(B). 0.8 mm
(C). 0.5 mm
(D). 0.2 mm
(E). None of these
Multiple Choice Question Answer: d

4. A chromaplate or thin layer chromatography plate is made up of which one?
(A). Metal
(B). Wood
(C). Glass
(D). Fibre
(E). None of these
Multiple Choice Question Answer: c

5. On continuous differential partitioning of components of a mixture between stationary and mobile phases paper chromatography is based.
(A). True
(B). False
(E). None of these
Multiple Choice Question Answer: a

6. In the spectral range of which one vibrational spectroscopy involves the transitions falling?
(A). 400-4000 cm-1
(B). 300-3000 cm-1
(C). 500-5000 cm-1
(D). 100-1000 cm-1
(E). None of these
Multiple Choice Question Answer: a

7. In detecting the presence of hydrogen bonding iR spectroscopy helps.
(A). True
(B). False
(E). None of these
Multiple Choice Question Answer: a

8. The principle on which thin layer chromatography is based on which one?
(A). On an absorbent, to different degrees, different compounds are absorbed
(B). On an adsorbent, to different degrees, different compounds are absorbed
(E). None of these
Multiple Choice Question Answer: b

9. _____cannot show a vibrational absorption spectrum.
(A). OCS
(B). H2O
(C). CO2
(D). C H2 = C H2
(E). None of these
Multiple Choice Question Answer: d

10. Which of the following is the correct statement?
(A). The quality of a sample it can also determine
(B). In a mixture it can determine the amount of components
(C). All of these
(D). The unknown materials infrared spectra can identify
(E). None of these
Multiple Choice Question Answer: c

11. The retardation factor is the ratio of which one?
(A). From top line to distance moved by the solvent from top-line distance moved by substance
(B). From base line to distance moved by the substance from base line distance moved by solvent
(C). None of these
(D). From the top line to distance moved by the substance from top-line distance moved by solvent
(E). From base line to distance moved by the solvent from base line distance moved by substance
Multiple Choice Question Answer: e

12. With ninhydrin solution is an example of which one amino acid was detected by spraying the plate?
(A). Paper chromatography
(B). Column chromatography
(C). Thin layer chromatography
(D). Liquid chromatography
(E). None of these
Multiple Choice Question Answer: a

13. ______ region of IR spectra appears between (1400-600) cm-1.
(A). Functional group region
(B). Low-frequency region
(C). None of these
(D). Fingerprint region
(E). None of these
Multiple Choice Question Answer: d

14. Which one is incorrect?
(A). None of these
(B). In paper chromatography special quality paper is used
(C). Which acts as stationary phase chromatography paper contains water trapped in it
(D). Paper chromatography is the kind of partition chromatography
(E). All of these
Multiple Choice Question Answer: e

15. ______ molecule have infrared active vibrations.
(A). NO
(B). CH4
(C). H2
(D). All of these
(E). None of these
Multiple Choice Question Answer: a

16. In a compound can be established by using which one, Presence of a functional group?
(A). IR spectroscopy
(B). Mass spectroscopy
(C). Chromatography
(D). X-ray diffraction
(E). None of these
Multiple Choice Question Answer: a

17. ______ is the absorption frequency(cm-1) of –C=N functional group.
(A). 2850-2960
(B). 1690-1760
(C). 3610-3640
(D). 1180-1360
(E). None of these
Multiple Choice Question Answer: d

18. ______is not a type of bending molecular vibration.
(A). Twisting
(B). Stretching
(C). Wagging
(D). Rocking
(E). None of these
Multiple Choice Question Answer: b

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