A surface phenomenon is
Filtration
Distillation
Density
Evaporation
The inter atomic distance is too low in
Solid state
Liquid state
Gaseous state
Oxygen
The thermometer that should be used to determine the boiling point of water is:
maximum and minimum therometer
clinical thermometer
celsius thermometer
room thermometer
When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to
boling
melting of potassium permanganate crystals
sublimation of crystals
diffusion
Which of these choices will not change the state of matter?
Temperature
Crushing a crystal
Pressure
Heat
A beaker contains 50g of ice and water mixture. The temperature of this mixture is :
less than 0°C
0°C
more than 0°C
4°C
In order to find the boiling point of water one of the precautions is that the bulb of the thermometer should not touch the sides of the beaker. This precaution is taken because:
sides of the beaker are at slightly higher temperature than 100°C.
sides of the beaker are at slightly lower temperature than 100°C.
the bulb of thermometer is likely to break.
none of the above.
Dry ice is
Solid carbon dioxide
Liquid carbon dioxide
Liquid oxygen
Liquid hydrogen
It has a tendency to maintain their shape when subjected to outside force.
Gases
Liquids
Solids
Kerosene
A substance having a definite shape and definite volume is called
Solid
plasma
liquid
gas
