Kinetic Theory Test

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Kinetic Theory Test - 16

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Question 1
1 / -0

The forces of attraction between molecules is greatest in _____state.

A
Liquid

B
Gaseous

C
Solid

D
All of the above

Solution

There are forces of attraction and repulsion that exist between molecules of all substances. These intermolecular forces allow molecules to pack together in different states. They are highest in solid state
Question 2
1 / -0

The plasma is created in stars due to:

A
high pressure

B
low pressure

C
high temperature

D
low temperature

Solution

Plasma contains super energized particles and this energy comes from high temperature.
Question 3
1 / -0

The value of gas constant $$R$$ (in cal/mol-K) for hydrogen is :

A
$$\displaystyle\frac{1}{2}$$

B
$$2 $$

C
$$4$$

D
$$1 $$

Solution

Numerical Values of the Gas Constant, R in Varius Units
Units Numerical Value
L-atm / mol-K 0.08206
cal/mol-K 1.987
J/mol-K 8.314
$$m^3$$-Pa/mol-K 8.314
L-torr/mol-K 62.36
It is approximately $$2 cal/mole-Kelvin $$. We can convert the 8.314 SI units to calories units by simply converting the units to their respective required units.
Question 4
1 / -0

The two scientists who predicted the fifth state of matter are:

A
Bose and Schrodinger

B
Einstein and Bose

C
Einstein and Schrodinger

D
Bose and Bohr

Solution

The two scientists who predicted the fifth state were S.N bose and Albert Einstein.
Question 5
1 / -0

The sun and stars glow because of the presence of :

A
gas

B
liquid

C
plasma

D
None of the above

Solution

The sun and stars glow due to the presence of plasma in it which are super energetic and super excited particles.
Question 6
1 / -0

The fluorescent tube and neon sign bulbs consists of:

A
solid

B
liquid

C
gas

D
plasma

Solution
Question 7
1 / -0

The temperature, to which a gas must be cooled before it can be liquified by pressure alone, is known as its

A
Saturation point

B
Freezing point

C
Liquification temperature

D
critical temperature

Solution

The temperature, to which a gas must be cooled before it can be liquified by pressure alone, is known as its critical temperature.
Question 8
1 / -0

In isothermal expansion of an ideal gas :

A
heat content remains constant

B
temperature remains constant

C
both heat content and temperature remain constant

D
pressure and temperature of the gas remain constant

Solution

$$\to$$ At right is a $$PV$$ diagram of an isothermal expansion
$$\to$$ The curve is a hyperbola
$$\to$$ The curve is called as isotherm
Suppose that the temperature of an ideal gas is held constant by keeping the gas in thermal contact with a heat reservoir. If the gas is allowed to expand quasi-statically under these so called isothermal conditions then the ideal equation of state tells us that $$PV=constant$$.
This is usually called the isothermal gas law.
Question 9
1 / -0

A large glacier melts at the base but not at the top because

A
The base of the glacier remains in warmer surroundings

B
Ice at the base contains impurities

C
Due to high pressure ice at the base has its melting point lowered

D
Ice at the top is of different kind

Solution

At the base of the glacier, pressure is very high on account of the enormous weight of the glacier. Since at high pressure, melting point of ice is lowered. Hence it melts at the base.
Question 10
1 / -0

The fifth state of matter i.e. Bose-Einstein condensate was proved in:

A
1991

B
1995

C
2001

D
2005

Solution

The fifth state of matter i.e. Bose-Einstein condensate was proved in the year 2001.

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Units	Numerical Value
L-atm / mol-K	0.08206
cal/mol-K	1.987
J/mol-K	8.314
$$m^3$$-Pa/mol-K	8.314
L-torr/mol-K	62.36

Kinetic Theory Test - 16

Result

Kinetic Theory Test - 16

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Question 1

Liquid

Gaseous

Solid

All of the above

Solution

Question 2

high pressure

low pressure

high temperature

low temperature

Solution

Question 3

$$\displaystyle\frac{1}{2}$$

$$2 $$

$$4$$

$$1 $$

Solution

Question 4

Bose and Schrodinger

Einstein and Bose

Einstein and Schrodinger

Bose and Bohr

Solution

Question 5

gas

liquid

plasma

None of the above

Solution

Question 6

solid

liquid

gas

plasma

Solution

Question 7

Saturation point

Freezing point

Liquification temperature

critical temperature

Solution

Question 8

heat content remains constant

temperature remains constant

both heat content and temperature remain constant

pressure and temperature of the gas remain constant

Solution

Question 9

The base of the glacier remains in warmer surroundings

Ice at the base contains impurities

Due to high pressure ice at the base has its melting point lowered

Ice at the top is of different kind

Solution

Question 10

1991

1995

2001

2005

Solution

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