9th Chemistry Chapter5 Physical States of Matter

Sr #	Questions	A	B	C	D
1	In which of the following processes speed of the particles decreases?	Melting	boiling	sublimation	condensation
2	The boiling points of some element are given below:	Argon ------------> -186oC	Nitrogen ------------> -196oC	Oxygen ---------------> -183oC	Xenon --------------> -108oC
3	Acetone has characteristic fragrant odour and is used to make finger nail polish. It melts at -94 oC and boils at 56oC . What is the physical state of acetone at 25oC and 1 atm.?	gas	Liquid	solid	cannot be predicated
4	The vapour pressure of liquid increases with the :	increase of pressure	increase of temperature	increase of intermolecular forces	increase of polarity of molecules
5	Which one of he following motions are possessed solid particles ?	rotational motions	vibrational motions	translational motions	both translational and vibrational motions
6	Which one of the following coexists in dynamic equilbrium at freezing point:	gas and solid	liquid and gas	liquid and solid	all of these
7	one atomspheric pressure is qual to how many pascals ?	101325	10325	106075	10523
8	A mixture of the above gasses at -210oC was heated by 20oC. Which of the element will still be in the liquid state ?	Oxygen only	Argon, oxygen and xenon	Argon, nitrogen and xenon	Xenon only
9	Which one of the following gas diffuses fstest ?	hydrogen	helium	fluorine chlorine	chlorine
10	Which statement about the particles of a solid in not correct?	They move at great speeds	They are arranged in regular patterns.	There is very little space between the particles,	The forces of attraction between the particles are strong.
11	A liquid boils when its vapour pressure becomes equal to	760 cm Hg	1Pa	101.325KPa	0.1atm
12	Which one of he following is not amorphous ?	rubber	plastic	glass	glucose