In which of the following media would sound waves travel fastest?
Kerosine
Alcohol
Water
lron
Air
Correct answer is D
No explanation has been provided for this answer.
The main reason why rice cooks faster in a pressure cooker than in cooking pot is that
less heat escapes from the cooker
the vapour pressure in the cooker is constant
the rice is not affected by the draught over the cooker
the vapour pressure in the cooker decreases
the boiling point of water in the cooker is raised.
Correct answer is E
No explanation has been provided for this answer.
saturation vapour pressure of water is higher than at sea-level
sun adds more heat to the water
temperature is lower than at sea- level
relative humidity of the atmosphere is lower
pressure of the atmosphere is lower
Correct answer is E
No explanation has been provided for this answer.
Cloud formation is the direct result of
precipitation
vaporization
fusion
sublimation
condensation
Correct answer is B
No explanation has been provided for this answer.
The saturated vapour pressure of a liquid increases as the
volume of the liquid increases
volume of the liquid decreases
temperature of the liquid increases
temperature of the liquid decreases
mass of the liquid decreases
Correct answer is C
No explanation has been provided for this answer.