Explore topic-wise MCQs in Chemistry Questions and Answers.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

The period’s number corresponds to the highest _________

A. Azimuthal quantum number
B. Spin quantum number
C. Magnetic quantum number
D. Principal quantum number
Answer» E.
Discussion
2.

The horizontal rows in Mendeleev’s periodic table were called as __________

A. periods
B. groups
C. series
D. rows
Answer» D. rows
Discussion
3.

Henry Moseley’s law is given by the equation \(\sqrt{v}\) = a(Z – b). What do a and b represent here?

A. The proportionality constant, screening constant
B. Screening constant, proportionality constant
C. Absorption constant, proportionality constant
D. screening constant, Boltzmann constant
Answer» B. Screening constant, proportionality constant
Discussion
4.

What does Z represent in the above graph?

A. Atomic mass
B. Atomic number
C. Frequency
D. Wavelength
Answer» C. Frequency
Discussion
5.

The graph of \(\sqrt{v}\) Vs Z gives a straight line.

A. True
B. False
Answer» B. False
Discussion
6.

____________ observed the X-rays’ characteristics.

A. Henry Moseley
B. Mendeleev
C. Pauli
D. Newland
Answer» B. Mendeleev
Discussion