The metal which has the highest thermal expansion.
Copper
Aluminium
Iron
Mercury
The metal that has more thermal conductivity
Zinc
Which is a wrong statement about radiation?
Radiation takes place only through vacuum.
Radiation takes place in vacuum also.
The heat of the sun reaches the earth through radiation.
The radiant heat reflects from smooth surfaces.
Which of the following does not belong to the modes of heat transmission?
Conduction
Convection
Radiation
Condensation
Which among the following is a good conductor?
Silver
What difference between two places make wind possible?
Humidity
Temperature
Pressure
All of these
The colour that absorbs heat more.
Red
Black
White
Green
The change that takes place when an iron is of 40oC temperature is immersed in water is of 50oC
The iron ball is cooled
The water boils
The temperature of iron ball increases
Temperature of water increases
Which is the wrong statement related to a convection?
It takes place in liquids and gases.
Change of position of molecules takes place
Transmission of heat takes place in all Conduction
Transmission of heat takes place only to the deeper direction.
A clinical thermometer is made
to measure any temperature
to measure body temperature in oF
to measure body temperature in oC
to measure body temperature in Kelvin unit
