Effect of Change of Pressure on State Change of Matter

Q.

Properties of solid, liquid , gas

Q.

Describe the characteristics of solid liquid and gas.

Q.

How to make 500 ml of 70% v/v of ethyl alcohol

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Effect of change of pressure defaniton

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Why it is advisable to use pressure cooker at high altitude?

Q.

Boiling point of petrol in degree celsius is

1. Below 20

2. $170-120$

3. $35-70$

4. $270-340$

Q.

Explain briefly, how gases can be liquefied.

Q. What is the difference between liquefaction and condensation?

Q.

What happens when gas is compressed?

Q.

Effect of change of temperature meaning and defenition

Q.

Question 4
Suggest a method to liquefy atmospheric gases.

Q.

If the boiling point of oxygen, argon and nitrogen are -183 C , -186 C and -196 C, which gas forms the liquid first as the air is cooled? Explain the process.

Q.

Give reason why liquids expand more than solids on heating?

Q.

What is the common name of solid carbon dioxide ?

Q.

Arrange the gases present in the air in the increasing order of their boiling points

Which gas gets liquified first when the air gets compressed?

Q.

Which gas gets liquified first on cooling air?

Q.

Pure water can be separated from inky water by simple distillation.This is because

1. Ink evaporates leaving the water behind

2. None of these

3. Water and ink have different boiling points

4. Water evaporates leaving the ink particles behind

Q.

The swimmer is able to cut through water in a swimming pool. Why? [3 MARKS]

Q.

State whether the following statement is true or false :

Solid carbon dioxide is stored under low pressure.

Q.

Explain the factors which govern the state of matter.

(4 marks)

Q.

How is ammonia gas liquefied?

Q.

Which of the following represent the suitable conditions for the liquefaction of gases?

(a) low temperature, low pressure (b) high temperature, low pressure

(c) low temperature, high pressure (d) high temperature, high pressure

Q. What happens to dry ice when the pressure under which it is stored is decreased?

1. Solid $C{O}_2$ converts into liquid $C{O}_2$
2. Solid $C{O}_2$ gets directly converted into gaseous $C{O}_2$.
3. Liquid $C{O}_2$ gets directly converted into gaseous $C{O}_2$.
4. Gaseous $C{O}_2$ gets directly converted into solid$C{O}_2$.

Q.

Explain the role of (a) temperature and (b) pressure in the Interconversion of States of matter.

Q.

Solid are generally very heavy while gases are light. Explain

Q.

Can matter change state?

Q. By applying pressure, particles of matter can be brought closer together.

1. True
2. False

Q.

How does applying pressure (or coompression)help in the liquefaction of a gas ?

Q. Applying pressure and reducing temperature can liquefy gases.

1. True
2. False

Q. Which separation technique is used in salt from sea-water