UV-Vis spectroscopy-1

Study of interaction of matter with electromagnetic radiation is called as

• Cryoscopy

• Telescopy

• Spectroscopy

The highest energy electromagnetic radiation is

• UV-Visible

• Microwaves

• Radiowaves

• Infrared

Energy of electromagnetic radiation is directly proportional to

• Wavelength

• Frequency

• Force

• Accleration

UV-Vis radiation has higher energy hence lower

• Wavelength

• Frequency

• Wave number

UV-Visible radiation wavelength ranges between

• 200 nm -400 nm

• 400 nm- 800 nm

• 200 nm - 800 nm

• 20 nm - 80 nm

Infrared radiation has _____ energy than UV-VISIBLE radiation

• Lower

• Higher

• Same

Which of these radiation has higher energy than UV-VISIBLE radiation?

• Microwaves

• X-ray

• Radiowaves

• Infrared

Which of the following radiation has the lowest wavelength?

• Gamma rays

• UV-VISIBLE

• Infrared

• Radiowaves

When molecules absorb UV-VISIBLE radiation it brings about _______ excitation

• Only Vibrational

• Only rotational

• Vibrational - rotational

• Electronic

When molecules absorb UV-VISIBLE radiation, electrons undergo transition from _____ electronic level

• Higher energy to lower energy

• Lower energy to higher energy

• Same energy

• No change