The freezing point of fresh water is ________ .
A). 4°C
B). 3°C
C). 5°C
D). 0°C
The boiling point of liquids vary as
A). Pressure varies
B). Temperature varies
C). Volume varies
D). Density varies
Which of the following laws validates the statement that matter can neither be created nor destroyed ?
A). Law of conservation of energy
B). Le Chatelier's Principle
C). Law of conservation of mass
D). Law of osmosis
When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of
A). Surface tension
B). Capillarity
C). Viscosity
D). Diffusion
When heated from 0 to 100oC volume of a given mass of water will :
A). Increase gradually
B). Decrease gradually
C). Increase and then will decrease
D). Decrease and then will increase