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.

Neutrally charged particles are protons.

A. True
B. False
Answer» C.
Discussion
2.

What s the mass of neutron in terms of electrons mass?

A. 1838 times of electron s mass
B. 1/1838 times of electron s mass
C. 1832 times of electron s mass
D. 1/1832 times of electron s mass
Answer» B. 1/1838 times of electron s mass
Discussion
3.

___________ is the lightest and smallest particles that s obtained from hydrogen(that is a positive ion).

A. Electron
B. Proton
C. Neutron
D. Particle
Answer» C. Neutron
Discussion
4.

When cathode rays strike zinc sulfide coating, what did it create?

A. bright spot
B. blue light
C. uv rays
D. white light
Answer» B. blue light
Discussion
5.

Thomson discovered that every substance in this universe is made up of ________ from his experiments.

A. neutrons
B. protons
C. electrons
D. mass
Answer» D. mass
Discussion
6.

Who did the oil drop experiment?

A. R. A. Millikan
B. J. J. Thomson
C. Rutherford
D. Galileo
Answer» B. J. J. Thomson
Discussion
7.

Which of the following condition is suitable for cathode ray discharge tube?

A. Low pressure, high voltage
B. Low pressure, low voltage
C. High pressure, low voltage
D. High pressure, high voltage
Answer» B. Low pressure, low voltage
Discussion
8.

Pick out electron s charge to mass ratio s value from the options.

A. 1.758820 10<sup>11</sup> C kg<sup>-1</sup>
B. 1.758820 10<sup>11</sup> C kg
C. 1.758823 10<sup>11</sup> C kg
D. 1.708820 10<sup>11</sup> C kg
Answer» B. 1.758820 10<sup>11</sup> C kg
Discussion
9.

Which of the following may be an incorrect statement regarding cathode ray discharge tube?

A. Presence of negative charge in cathode rays
B. The magnetic field deflects these rays
C. It needs high voltage
D. Protons are present in cathode rays
Answer» E.
Discussion