Explore topic-wise MCQs in Analytical Instrumentation.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Analytical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.

1.

For a molecule to absorb IR, why must the molecule's vibrations cause fluctuations in the dipole moment of the molecule?

A. Because a change in dipole moment lowers the energy required for electronic transitions
B. Because for absorption to occur, the radiation must interact with the electric field caused by changing dipole moment
C. Because fluctuations in the dipole moment allow the molecule to deform by bending and stretching
D. All of the above
Answer» C. Because fluctuations in the dipole moment allow the molecule to deform by bending and stretching
Discussion
2.

284.6 eV matches which of the following specific atom type?

A. Carbon
B. Oxygen
C. Nitrogen
D. Argon
Answer» B. Oxygen
Discussion
3.

In the spectrum, two main peaks at _________ and ________ are observed.

A. 284.6, 532.5
B. 248.6, 523.5
C. 264.8, 535.2
D. 246.8, 553.2
Answer» B. 248.6, 523.5
Discussion
4.

ESCA focusses on which of the following information?

A. Mass of the electron
B. Charge of the electron
C. Binding energy of the electron
D. Mass of atoms
Answer» D. Mass of atoms
Discussion
5.

ESCA gives sufficient chemical information up to a depth about ________ armstrong in polymers.

A. 5-20
B. 15-40
C. 40-100
D. 100-200
Answer» D. 100-200
Discussion
6.

ESCA_FOCUSSES_ON_WHICH_OF_THE_FOLLOWING_INFORMATION??$

A. Mass of the electron
B. Charge of the electron
C. Binding energy of the electron
D. Mass of atoms
Answer» D. Mass of atoms
Discussion
7.

284.6 eV matches which of the following specific atom type?$

A. Carbon
B. Oxygen
C. Nitrogen
D. Argon
Answer» B. Oxygen
Discussion
8.

In the spectrum, two main peaks at _________ and ________ are observed.$

A. 284.6, 532.5
B. 248.6, 523.5
C. 264.8, 535.2
D. 246.8, 553.2
Answer» B. 248.6, 523.5
Discussion
9.

Which of the following is the detection limit of ESCA?

A. 0.1% monolayer
B. 0.5% monolayer
C. 1% monolayer
D. 2% monolayer
Answer» B. 0.5% monolayer
Discussion
10.

By studying which of the following can we determine if the surface corresponds to C-O or C=O chemical form?

A. Mass of the electron
B. Energy of the carbon peak
C. Binding energy
D. Charge of electron
Answer» C. Binding energy
Discussion
11.

532.5 eV matches which of the following specific atom type?

A. Carbon
B. Oxygen
C. Nitrogen
D. Argon
Answer» C. Nitrogen
Discussion
12.

Discrete electrons cannot be observed in electron ionization of an atom due to which of the following reasons?

A. Environmental disturbances
B. Same mass
C. Same charge
D. Electron- electron interaction
Answer» E.
Discussion
13.

ESCA can identify elements in the periodic table above which of the following?

A. Carbon
B. Boron
C. Helium
D. Potassium
Answer» D. Potassium
Discussion
14.

ESCA gives sufficient chemical information up to a depth about ________ armstrong in oxide.

A. 5-20
B. 15-40
C. 40-100
D. 100-200
Answer» C. 40-100
Discussion
15.

ESCA gives sufficient chemical information up to a depth about ________ armstrong in metals.

A. 5-20
B. 15-40
C. 40-100
D. 100-200
Answer» B. 15-40
Discussion
16.

The kinetic energy of the ejected photoelectron is dependent upon the energy of which of the following?

A. Ions around
B. Photons around
C. Material
D. Impinging photon
Answer» E.
Discussion
17.

Electron spectroscopy is based on the ionization phenomenon.

A. True
B. False
Answer» B. False
Discussion
18.

Ion etching techniques provides the depth profiling from the surface.

A. True
B. False
Answer» B. False
Discussion
19.

The kinetic energy of the photoelectron energies is dependent on _________ of the atom, which makes XPS useful to identify the oxide state.

A. Mass
B. Charge
C. Chemical environment
D. Volume
Answer» D. Volume
Discussion