SAT 9

The particle arranged in a fixed regular pattern

• Solid

• liquid

• Gas

• Chemical

The particles not arranged in a fixed regular pattern

• Solid

• Liquid

• Gas

• All the Above

The particles move freely over long distance

• Solid

• Liquid

• Gas

• Both b and c

Metals are Extracted from natually Occuring components called -------by a series of chemical change.

• Ores

• Points

• Physical Changes

• Chemical Changes

--------- is the slow process that occur only at surface of the liquid

• Freezing

• Evaporation

• Sublimation

• Both b and c

Changes that repeat themselves after a regular interval of time

• Oscillation

• Periodic

• Vibration

• None of these

Solid persons usually purified by the process

• Crystallization

• Boiling

• Melting

• All the above

Melting of gold is an example of

• Physical change

• Chemical change

• Chemical electrical

• Physical magnetic

Which is not a sign of reversible change

• Change in size

• Change in property

• Change in state

• Change in appearance

Which of the following can be reversed

• Cow dung to biogas

• Wet clothes to dry clothes

• Bud to flower

• Raw egg to boiled