Water is used as an effective coolant because of its:
solvent nature
large specific heat capacity
low specific heat capacity
ability to exist in three states of matter
The specific heat capacity of aluminium is 1.2 cal/g/°C.Its value in J/kg/K will be:
5.04 x 103
1.2 x 103
4.2 x 103
3.5 x 103
What is the specific latent heat of fusion of water?
80 Cal g-1
4200 J kg-1
336 J kg-1
2260 J g-1
The specific heat capacity of hydrogen is
42000 J / kg / k
14630 J / kg / k
4180 J / kg / k
2100 J / kg / k
10 g of ice at 0 °C absorbs 5460 J of heat energy to melt and change to water at 50 °C. Calculate the specific latent heat of fusion of ice.
436 J g-1
336 J g-1
546 J g-1
420 J g-1
What is the latent heat of fusion of mercury?
180 x 103 J kg-1
3 x 103 J kg-1
21 x 103 J kg-1
12.5 x 103 J kg-1
Calculate the heat energy required to raise the temperature of 2 kg of water from 10°C to 50°C. Specific heat capacity of water is 4200 Jkg-1k-1 .
3360 J
336 J
336000 J
33600 KJ
What is the specific heat capacity of water ?
4200 Cal/g/k
1000 Cal/kg/°C
1000 x 103 Cal/kg/°C
4200 x 103 Cal/g/°C
What could be the final temperature of a mixture made up of a substance having mass 10 kg and specific heat capacity 1800 J/kg/k and temperature 27°C and a substance having mass 5kg and specific heat capacity 2400 J/kg/k at temperature 21°C?
297.6 K
300 K
297 K
290 K
What is the range of water in plants and animal body?
60 - 70 %
70 - 80%
80 - 90%
90 - 100%
