Exploring Infrared Spectroscopy

Exploring Infrared Spectroscopy

University

23 Qs

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Exploring Infrared Spectroscopy

Exploring Infrared Spectroscopy

Assessment

Quiz

Chemistry

University

Practice Problem

Easy

Created by

Shilpi Pathak

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23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is infrared spectroscopy used for?

Analyzing the electrical conductivity of metals.

Measuring temperature changes in materials.

Determining the color of substances.

Infrared spectroscopy is used for identifying and analyzing molecular structures and compositions.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define FTIR and its significance in spectroscopy.

FTIR is only used for gas analysis.

FTIR is a method for visualizing colors in materials.

FTIR is significant in spectroscopy as it provides detailed information about molecular structure, composition, and interactions, making it essential for material analysis, quality control, and research in various fields.

FTIR measures only the temperature of materials.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

List the basic modes of vibration in molecules.

The basic modes of vibration in molecules are: stretching (symmetric and asymmetric) and bending (in-plane and out-of-plane).

oscillation and resonance

compression and expansion

vibrational rotation and translation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of information can be obtained from an FTIR spectrum?

FTIR spectrum shows only the color of a substance.

FTIR spectrum indicates the physical state of a material.

FTIR spectrum reveals molecular structure, functional groups, and chemical bonds.

FTIR spectrum provides information about the temperature of a sample.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the principle behind infrared spectroscopy.

Infrared spectroscopy analyzes the color of light emitted by heated objects.

Infrared spectroscopy identifies molecules based on their mass.

Infrared spectroscopy measures the reflection of visible light by solids.

Infrared spectroscopy measures the absorption of infrared light by molecules to identify their vibrational modes.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of a beam splitter in FTIR instrumentation?

The beam splitter divides the infrared light into two paths for interference, crucial for spectrum analysis.

The beam splitter focuses the infrared light onto a single detector.

The beam splitter amplifies the infrared light for better detection.

The beam splitter filters out unwanted wavelengths before analysis.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the main components of an FTIR spectrometer.

Light source, interferometer, sample holder, detector, computer/software

Optical fiber coupler

Laser alignment system

Spectral calibration device

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