Explore topic-wise MCQs in Chemistry.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following period is the shortest one?

A. 1
B. 3
C. 2
D. 4
Answer» B. 3
Discussion
2.

Which was the incomplete period in the long-form of the modern periodic table?

A. 7<sup>th</sup> period
B. 4<sup>th</sup> period
C. 6<sup>th</sup> period
D. 2<sup>nd</sup> period
Answer» B. 4<sup>th</sup> period
Discussion
3.

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
4.

In the modern long-form of periodic table, the horizontal rows and the vertical columns are called as __________ and ___________ respectively.

A. groups, periods
B. periods, groups
C. rows, columns
D. columns, rows
Answer» C. rows, columns
Discussion
5.

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

A. periods
B. groups
C. series
D. rows
Answer» D. rows
Discussion
6.

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
7.

The physical and chemical properties of an element are the periodic function of its _________

A. Atomic mass
B. Element behaviour
C. No of electrons
D. Atomic number
Answer» E.
Discussion
8.

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

A. True
B. False
Answer» B. False
Discussion
9.

____________ observed the X-rays characteristics.

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