Spectroscopy useful for gas analysis is

Options

A. Absorption spectroscopy
B. Infra-red spectroscopy
C. Emission spectroscopy
D. Nuclear magnetic resonance spectroscopy

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks which type of spectroscopy is useful for gas analysis. We need to identify the correct option from the given choices.

2. **Analyzing the Options**:
- **Absorption Spectroscopy**: This technique is primarily used to study the absorption of light by substances, such as chlorophyll in plants.
- **Infrared Spectroscopy**: This method involves the interaction of infrared radiation with matter and is commonly used for identifying and studying chemicals in various states, including gases.
- **Machine Spectroscopy**: This term is not commonly used in scientific literature and may refer to a general category rather than a specific technique.
- **Nuclear Magnetic Resonance (NMR) Spectroscopy**: This technique is used to study the properties of molecules, particularly in liquid and solid states, but it is not primarily focused on gas analysis.

3. **Identifying the Correct Answer**: Among the options, infrared spectroscopy is specifically designed to analyze gases by measuring the infrared absorption spectrum of the target gas. Therefore, it is the most suitable method for gas analysis.

4. **Conclusion**: The correct option for spectroscopy useful for gas analysis is **Infrared Spectroscopy**.

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