Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
What kind of transfer of heat involve while you boil water in the pot?
Evaporation
Conduction
Convection
Radiation
If the temperature of a patient is 40°C then what will be his temperature on Fahrenheit Scale?
104°F
98°F
108°F
106°F
In liquids the heat transfer takes place by means of ___
conduction
convection
radiation
passivation
A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. What would be the corresponding reading in a Celsius thermometer?
574
301
273
232
Latent heat is defined as ______.
the amount of heat needed to change the state of a unit mass of any substance without changing its temperature.
the amount of heat needed to raise the temperature of a material by 1 degree Celsius.
the amount of heat required to raise the temperature of 1 mol of the gas by 1 °C at the constant volume.
an energy transfer from one system to another or from one part of a system to another part, arising due to the temperature difference.
A fan produces a feeling of comfort during hot weather because:
Our perspiration evaporates quickly
Our body radiates more heat when air is flowing
Fan supplies cool air
Conductivity of air increases
An iron ball at 40°C is dropped in mug containing water at 40°C. The heat will
Flow from iron ball to water.
not flow from iron ball to water or from water to iron ball
flow from water to iron ball
Increase the temperature of both
The latent heat of vaporization of a substance is always
Greater than its latent heat of fusion
Greater than its latent heat of sublimation
Equal to its latent heat of sublimation
Less than its latent heat of fusion
The phase change of a matter from liquid state to gaseous state is known as ___________.
Sublimation
Condensation
Vaporization
The heat transfer in the light bulb takes place due to:
Both option 2 and 3 are correct
