Factors - UV Spectroscopy

​Types of shift

Multiple Choice

Which of the following effects results in increased intensity (absorbance) of the UV peak?

• Bathochromic shift

• Hypochromic effect

• Hyperchromic effect

• Hypsochromic shift

Multiple Select

Which of the following factor will not produce bathochromic shift?

• Alkyl substitution

• None of above

• Trans molecular structure

• Double bond extended conjugation

Multiple Select

What is the general effect of increasing solvent polarity on the π → π* transition?

• λmax increases (bathochromic shift)

• λmax decreases (hypsochromic shift)

• No change

• bsorbance becomes zero

Multiple Choice

Due to high temperature which shift can be produced?

• Red shift

• Blue shift

• Hyppochromic shift

• Hyperchromic shift

Multiple Choice

The deuterium lamp emits radiation in which wavelength range?

• 100–200 nm

• 160–375 nm

• 400–700 nm

• 250–850 nm