Mercury is suitable as a barometric fluid because it?
expands uniformly
is opaque
is several times denser than water
is a good conductor of heat
Correct answer is C
Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained.
Which of the following is common to evaporation and boiling? They
take place at any temperature
are surface phenomena
involve change of state
take place at a definite pressure
Correct answer is C
No explanation has been provided for this answer.
The specific latent heat of fusion of lead is the amount of heat required to
melt lead at its melting point
heat a unit mass of lead through 1oC
change the state of a unit mass of lead at its melting point
change the state of a unit mass of lead at its boiling point
Correct answer is C
No explanation has been provided for this answer.
The mode of heat transfer which does not require a material medium is
conduction
radiation
convection
propagation
Correct answer is B
No explanation has been provided for this answer.
1.0N
10.0N
9000.0N
11 000N
Correct answer is C
No explanation has been provided for this answer.