Lec 6

Question 1

Definition of special gravity

Answer 1

Ratio of the density of a given substance to the density of water

• depend on temperature and pressure

Question 2

Measurement equipment of special gravity

Answer 2

1) hydrometer
-ratio of the density of liquid to the density of water

2) pycnometer/special gravity bottle

3) Oscillator type density meter
-determine specific sample/gaseous

Question 3

3 types of pycnometer

Answer 3

1)gas pycnometer
2)mercury pycnometer
3)high pressure pycnometer

Question 4

Types of hydrometer

Answer 4

1)Lactometer: find amount of milk
2)alcoholmeter: determine the alcoholic strength of liquid
3)saccharometer: find out amount of sugar in solution
4)thermohydrometer: measure density of Petroleum Products
5) soil hydrometer: determine the process of soil , silts and clays