Chemistry - Questions and Answers, General Study (GK)

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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

(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

(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

(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

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Chemistry - Questions and AnswersPage 2

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