Click the correct answer (True or False).
Click the correct answer.
Transfer of heat due to convection occurs in which of the following?
Solids
Liquids
Gases
Liquids and gases
An iron weight at 45 °C is dipped in a bucket containing water at 45 °C. How will heat flow?
Flows from water to iron weight
Flows from iron weight to water
Does not flow between them
Flows and increases the temperature of both
When does conduction take place?
Two objects are in contact
Temperatures of two objects are not same
Both of these
None of these
Why are cooking utensils made up of metals?
Durable
Good conductors of heat
Easy to clean
None of these
A wooden spoon is used to make vegetable in a metal frying pan. What happens to the other end of the spoon?
Becomes hot because of conduction
Becomes hot because of convection
Becomes hot because of radiation
Does not become hot
Click the correct answer.
does not require any medium.
Convection
Conduction
Radiation
Absorption
Heat transfer by the process of convection takes place in
.
liquids
gases
solids
liquids and gases
Dark-coloured objects are good
.
reflectors
absorbers
shiny surface
conductor
Temperature of a day is measured with
thermometer.
laboratory
maximum-minimum
clinical
digital
Cooking is faster in
vessels.
metallic
clay
glass
pastic
