What happens after point D in temperature - time graph? Can steam be hotter than `100^@C`?

What happens to temperature of the body if it radiates more heat than it absorbs.

Water falls from a height of 200 m. What is the difference in temperature between the water at the top and bottom of a water fall given that specific heat of water is 4200 J kg^-1 ^@C^-1 ? A. 0.96^@C B. 1.02^@C C. 0.46^C D. 1.16^@C

What happens when the temperature of a solution is increased from 25^(@)C to 52^(@)C ?

Railway lines are laid with gaps to allow for expansion. If each line is 10 m long at 20^@C , what should be the length of the gap to be kept between two rails to allow for expansion if the maximum temperature that can be reached is 50^@C ? (alpha_(steel)=1.2 xx 10^-6//^@C)

A glass flask of volume one liter at 0^@C is filled, level full of mercury at this temperature. The flask and mercury are now heated to 100^@C . How much mercury will spill out, if co-efficient of volume expansion of mercury is 1.82 xx 10^-4/@C and linear expansion of glass is 0.1 xx 10^-4 /^@C respectively ?

A calorimeter of mass 50 gm and specific heat capacity 0.42 J g^-1 ^@C^-1 contains some water at 20^@ C. A metal piece of mass 20 gm at 100^@ C is dropped into the calorimeter. After stirring, the final temperature of the mixture is found to be 22^@C .Find the mass of water used. (specific heat of metal piece= 0.3 J g^-1 ^@C^-1 specific heat of water = 4.2 J g^-1 ^@C^-1 )

Water of mass 200g and temperature 30⁰C is taken in a copper calorimeter of mass 50g and temperature 30⁰C .A copper sphere of mass 100g and temperature 100⁰C is released into it. What will be the maximum temperature of the mixture ? [ c (water)= 1 cal/g ⁰C, C (copper) = 0.1 cal/g ⁰C ]

An aluminium rod and iron rod show 1.5 m difference in their lengths when heated at all temperature. What are their lengths at 0 ^@C if coefficient of linear expansion for aluminium is 24.5 xx 10^-6 //^@C and for iron is 11.9 xx 10^-6 //^@C