Entry Test MCQ :: Diagnostic Test

@ : Home > Chemistry > Diagnostic Test

11.

A method of separation of components from its solution using Distribution law is

A.	Sublimation	B.	Crystallisation
C.	Solvent extraction	D.	Distillation

12.

A real gas obeying vander waals equation will resemble the ideal gas if

A.	Both a and b are small	B.	Both a and b are large
C.	a is small and b is large	D.	a is large and b is small

13.

Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is

A.	one / seventeen	B.	sixteen / seventeen
C.	one / three	D.	two / three

14.

Plasma is used in

A.	Fluorescent bulb	B.	Neon signs
C.	Lasers	D.	All of these

15.

The molecules of CO2 in dry ice form

A.	Ionic crystal	B.	Covalent crystal
C.	Molecular crystal	D.	Any type of crystal

16.

Which of the following is pseudo solid

A.	CaF2	B.	NaCl
C.	Glass	D.	Diamond

17.

Only London dispersion forces are present among the

A.	Molecules of water in liquid state	B.	Atoms of helium in gaseous state at high temperature
C.	Molecules of hydrogen chloride gas	D.	Molecules of solid iodine

18.

Bohrs model is contradicted by

A.	Plancks theory	B.	Dual nature of matter
C.	Heisenbergs uncertainty principle	D.	All of these

19.

Quantum number values for 3p orbitals are

A.	n=3 l=2	B.	n=3 l=0
C.	n=3 l=1	D.	n=3 l=3

20.

When fast neutron strike the nucleus of nitrogen the particles ejected are

A.	? - particles	B.	? - particles
C.	? - rays	D.	X - rays