Question

80 gm of water at 30oC is poured on a large block of ice at 0oC. The mass of ice that melts is:

Solution

Correct option is

30 gm

 

Since the block of ice at 0oC is large, the whole of ice will not melt, hence final temperature is 0oC.

   

           

            

If m gm be the mass of ice melted, then  

     

         

SIMILAR QUESTIONS

Q1

The temperature at which the reading of a Fahrenheit thermometer will be double that of Centigrade thermometer is:

Q2

In a resistance thermometer the resistances at 0oC and 100oC are 6.74 and 7.74 ohm respectively. The temperature corresponding to 6.53 ohm resistance is:   

Q3

Which of the following has the highest specific heat? 

Q4

Which of the following has the highest specific heat? 

Q5

A liquid is being converted into vapours at its bp; the specific heat of liquid at this temperature will be:

Q6

Specific heat of a gas undergoing adiabatic change is:

Q7

Which of the following produces more servere burns? 

Q8

A body cools from 91oC to 89oC in 5 minutes when the room temperature is 20oC. Then it will cool from 71oC to 69oC in:   

Q9

Three liquids with masses m1m2m3 are thoroughly mixed. If their specific heats are s1s2s3 and their temperature θ1θ2θ3 respectively, then the temperature of the mixture is:    

Q10

250 gm of water and equal volume of alcohol of mass 200 gm are replaced successively in the same calorimeter and cool from 60oC to 55oC in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is 10 gm, then the specific heat of alcohol in cal/gm-oC is: