MEDIUM
Earn 100

Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials?

50% studentsanswered this correctly

Important Questions on Physics

EASY
General Science>General Science>Physics>Heat and Thermodynamics
At what temperature does iron melt?
EASY
General Science>General Science>Physics>Heat and Thermodynamics
The difference in temperature between the two bodies is 30 degrees centigrade. What is the difference in degrees Fahrenheit?
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Iron boils at about _____ degree Celsius.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
What will happen if a glass bottle is completely filled with water, sealed with a lid and put into a freezer?
MEDIUM
General Science>General Science>Physics>Heat and Thermodynamics
The linear expansion of a solid rod is independent of its _____.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
The sun heats the earth through:
EASY
General Science>General Science>Physics>Heat and Thermodynamics
There are some plastics that when moulded once cannot be softened by heating. These are called _____.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
The lowest temperature at which a substance catches fire is called its_____.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Temperature is measured by the instrument called:
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Which one of the following is a bad Thermal Conductor?
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Which of the following is also called the First Law of Thermodynamics?
EASY
General Science>General Science>Physics>Heat and Thermodynamics
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Heat, in _____, is a type of energy transfer from a warmer substance to a colder one.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Which chemical law proposes that 'soft drinks and soda bottles are sealed under high pressure to
increase the solubility of 'CO2'?

 

EASY
General Science>General Science>Physics>Heat and Thermodynamics
What is the boiling point of water at sea level?
EASY
General Science>General Science>Physics>Heat and Thermodynamics

After using for some time, big transformers get heated up. This is due to the fact that

1. current produces heat in the transformers.

2. hysteresis loss occurs in the transformers.

3. liquid used for cooling gets heated.

Select the correct answer using the code given below:

MEDIUM
General Science>General Science>Physics>Heat and Thermodynamics
What is the boiling point at standard atmospheric pressure at sea-level and 45° latitude of water on the Celsius scale?
EASY
General Science>General Science>Physics>Heat and Thermodynamics
_____ expansion makes the Eiffel Tower taller during summers.
EASY
General Science>General Science>Physics>Heat and Thermodynamics
Temperature is measured by the instrument called _____.
EASY
General Science>General Science>Physics>Heat and Thermodynamics

The instrument used to regulate temperature to a particular degree is called:

1. Thermostat

2. Thermometer

3. Pyrometer

4. Thermocouple