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
The transfer of heat by _____ does not require any medium
Conduction
Radiation
Convection
Both a and b
If hot water and tap-water are kept in refrigerator the rate of cooling of hot water will be_____ than the tap-water.
Slower
Faster
Smaller
Constant
Which one of the following liquids evaporates quickly
Water
Petrol
Kerosene
Alcohol
Water pipes burst in severe winter at hill station because
They contract on cooling
Water in the pipe contracts on freezing
Water in the pipe expands on freezing
Pipes expand on cooling
Which of the following is NOT a SI unit?
Calorie
