Organic Chemistry Exam Questions
Understand the Problem
The image contains a question paper for an Organic Chemistry exam (CH-607). It includes various questions related to organic chemistry concepts, including spectroscopy, chemical formulas, electronic excitations, and fundamental modes of vibrations.
Answer
The questions from an organic chemistry exam include short answer questions and problems involving UV/Vis and IR spectroscopy.
Here are the questions from the organic chemistry exam paper:
Q1. Attempt any five of the following:
- Express λ = 950 nm in cm⁻¹.
- What is auxochromophore?
- Arrange electronic excitations according to increase in order of energy.
- What is Hook's law?
- Give the formula for reduced mass in the calculation of vibrational frequency.
- How many types of protons are present in methyl iso-propyl ether?
- Give fundamental modes of vibrations in ammonia.
Q2. Attempt the following questions:
A) Calculate λ max of the following compounds (structures provided in the image).
B) Attempt the following questions (Any two):
- Distinguish between the following pair by IR spectroscopy (structures provided in the image).
- Give the applications of UV spectroscopy.
- An organic compound having molecular formula C₂H₄O shows positive iodoform test and shows IR band at 1710 cm⁻¹, find out the structure of the given organic compound.
Answer for screen readers
Here are the questions from the organic chemistry exam paper:
Q1. Attempt any five of the following:
- Express λ = 950 nm in cm⁻¹.
- What is auxochromophore?
- Arrange electronic excitations according to increase in order of energy.
- What is Hook's law?
- Give the formula for reduced mass in the calculation of vibrational frequency.
- How many types of protons are present in methyl iso-propyl ether?
- Give fundamental modes of vibrations in ammonia.
Q2. Attempt the following questions:
A) Calculate λ max of the following compounds (structures provided in the image).
B) Attempt the following questions (Any two):
- Distinguish between the following pair by IR spectroscopy (structures provided in the image).
- Give the applications of UV spectroscopy.
- An organic compound having molecular formula C₂H₄O shows positive iodoform test and shows IR band at 1710 cm⁻¹, find out the structure of the given organic compound.
More Information
This is an organic chemistry exam paper, likely for a second-year undergraduate course. It covers topics such as UV/Vis spectroscopy, IR spectroscopy, and basic organic chemistry concepts.
Tips
Pay attention to units, especially when converting between wavelength and wavenumber. Remember the key functional groups and their characteristic IR absorptions. Understand the Woodward-Fieser rules for calculating λmax.
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