
Chemistry Unit 3 Test
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Chemistry
11th - 12th Grade
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following solid has highest lattice energy
NaCl
MgCl2
AlCl3
CsCl
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
As the speed of gas molecules decreases, the number of collosions per second
Increases
Decreases
Does not change
Remains constant
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The significant intermolecular force of attraction between neon and water is
Dipole – dipole force
Hydrogen bonding
Debye force
London dispersion force
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If 20 g of a gas at 1 atmosphere pressure is cooled from 273°C to 0°C at constant pressure its volume would become
Triple
Double
Half
Constant
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The postulate of kinetic theory of gases for ideal gas is
Atom is indivisible
Gases combine in a simple ratio
The influence of gravity on the gaseous molecule is negligible
The molecules have higher average speeds and strike the walls more often
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The molecules of which gas have largest average K.E. at 250°C
Argon
Helium
Carbon monoxide
All have same average K.E.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The boiling point of water is maximum when external pressure is
1489 torr
23.7 torr
700 torr
323 torr
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