home Home » General Study » Chemistry - Questions and Answers Objective Questions

Chemistry - Questions and AnswersPage 2

11.

Kinetic viscosity of a given liquid is the ratio of the
(a)coefficient of viscosity to the density
(b)coefficient of viscosity to the surface tension
(c)density to the coefficient of viscosity
(d)surface tension to the coefficient of viscosity
Comment
Answer is: CNA

12.

In a pressure cooker, cooking is faster because the increases in vapour pressure
(a)increases the specific heat
(b)decreases the specific heat
(c)decreases the boiling point
(d)increases the boiling point
Comment
Answer is: DNA

13.

The number of unpaired electron in Mn2+ is
(a)1
(b)3
(c)4
(d)5
Comment
Answer is: DNA

14.

An atom has 7 electrons in its M-shell and contains 18 neutrons in its nucleus. What is its mass number?
(a)25
(b)27
(c)35
(d)43
Comment
Answer is: CNA

15.

Wavelength of which of the following colours of the visible spectrum of light are maximally absorbed by green plants?
(a)Green and yellow
(b)Red and blue
(c)Green and red
(d)Blue and yellow
Comment
Answer is: BNA

16.

The nucleus of a singly ionized carbon atom contains
(a)6 protons and 6 neutrons
(b)5 protons and 6 neutrons
(c)6 protons, 6 neutrons and 6 electrons
(d)12 protons, 6 neutrons and 6 electrons
Comment
Answer is: ANA

17.

Which of the following assumes integral values in Bohr's atomic model?
(a)Linear momentum
(b)Angular momentum
(c)Kinetic energy
(d)None of the above
Comment
Answer is: BNA

18.

Which one of the following element has two electrons in the K-shell only?
(a)Hydrogen
(b)Helium
(c)Neon
(d) Sulphur
Comment
Answer is: BNA

19.

The constituent particle of a nucleus in an atom is
(a)electron and proton
(b)proton and neutron
(c)electron and neutron
(d)electron, proton and neutron
Comment
Answer is: BNA

20.

In an atom, the order of filling up of the orbitals is governed by
(a)Aufbau's principle
(b)Heisengberg's uncertainty principle
(c)Hund's rule
(d)Pauli’s exclusion principle
Comment
Answer is: ANA

Comments

No comment yet.

copyright 2014-2018 This site is powered by sNews | Login