Entry Test MCQ :: Liquids and Solids

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21.

The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called

A.	Dipole-dipole forces	B.	Ion dipole-dipole forces
C.	London dispersion forces	D.	Debye forces

22.

The boiling point increases down the zero group element due to

A.	Ion dipole forces	B.	London forces
C.	Hydrogen bonding	D.	Dipole dipole forces

23.

Vapour pressure is not affected by

A.	Surface area	B.	temperature
C.	intermolecular forces	D.	atmospheric pressure

24.

Rising of a wetting liquid in a capillary tube is due to

A.	Surface tension	B.	Cohesive forces
C.	Adhesive forces	D.	viscosity

25.

Table salt crystallizes with a

A.	Face centered cubic lattice	B.	body centered cubic lattice
C.	simple cubic lattice	D.	othorhombic lattice

26.

The number of formula units in 29.25g of common salt

A.	6.022 x 1023	B.	3.01 x 1023
C.	2 x NA	D.	4 x 6.022 x 1023

27.

During which process empty spaces between particles become minimum?

A.	ionization	B.	condensation
C.	fusion	D.	evaporation

28.

Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it?

A.	Liquid do not have definite shape	B.	Liquid do not have definite volume
C.	Lieuid is highly compressible	D.	Liquid molecules can slide over each other

29.

Which one of the following has highest volatility

A.	Diethyl ether	B.	Ethyl alcohol
C.	Water	D.	Ethylene glycol

30.

Molar heat of vaporization of water is

A.	40.7 KJ/mole	B.	40.7 J/mole
C.	40.7 cal/mole	D.	40.7 Kcal/mole