9. Choose the CORRECT statement of the chromophores: A. Saturated organic functional groups that absorb in the UV-VIS region. B. Contains electrons with relatively high excitation energies. C. The chromophore can display colour when it is exposed to visible light. D. More chromophores in the same molecule cause a hypsochromic effect

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9.
Choose the CORRECT statement of the chromophores:
A. Saturated organic functional groups that absorb in the UV-VIS region.
B. Contains electrons with relatively high excitation energies.
C. The chromophore can display colour when it is exposed to visible light.
D. More chromophores in the same molecule cause a hypsochromic effect
10. Molecules that absorb electromagnetic radiation in UV/VIS region will result in a
transition of electronic energy levels. Choose the following transition of hexane
molecules absorption using UV/VIS spectroscopy.
A. T-I*
B. 0 0*
C. n→π*
D. n-o*
11. Following is the solid samples preparation method of IR analysis EXCEPT:
A. KBr pallet
B. Thin film
C. Nujol Mull
D. Organic compound sample in the solvent
12. Aldehyde and ketone are functional groups that having C=0 stretches. Select the
following statement to differenciates the aldehyde and ketone.
A. The aldehyde can be distinguished from a ketone by an intense C-O stretch
B. The aldehyde has a single and a weak peak at 3200 regions.
C. The aldehyde consists of a pair of the weak peak at 2860 - 2800 cm³¹ and 2760
-2700 cm¹
D. The ketone tends to be double and sharper than the aldehyde stretches.
13. Choose the following molecules that is IR inactive.
A. HCI
B. NO
C. H₂
D. CO
Transcribed Image Text:9. Choose the CORRECT statement of the chromophores: A. Saturated organic functional groups that absorb in the UV-VIS region. B. Contains electrons with relatively high excitation energies. C. The chromophore can display colour when it is exposed to visible light. D. More chromophores in the same molecule cause a hypsochromic effect 10. Molecules that absorb electromagnetic radiation in UV/VIS region will result in a transition of electronic energy levels. Choose the following transition of hexane molecules absorption using UV/VIS spectroscopy. A. T-I* B. 0 0* C. n→π* D. n-o* 11. Following is the solid samples preparation method of IR analysis EXCEPT: A. KBr pallet B. Thin film C. Nujol Mull D. Organic compound sample in the solvent 12. Aldehyde and ketone are functional groups that having C=0 stretches. Select the following statement to differenciates the aldehyde and ketone. A. The aldehyde can be distinguished from a ketone by an intense C-O stretch B. The aldehyde has a single and a weak peak at 3200 regions. C. The aldehyde consists of a pair of the weak peak at 2860 - 2800 cm³¹ and 2760 -2700 cm¹ D. The ketone tends to be double and sharper than the aldehyde stretches. 13. Choose the following molecules that is IR inactive. A. HCI B. NO C. H₂ D. CO
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