हमारे आस पास के पदार्थ | Matter In Our Surrounding | Latent Heat | Class 9 Chemistry Chapter 1 NCERT

हमारे आस पास के बाजार |साप्ताहिक बाजार|OMR

One end of a copper rod of uniform cross-section and of length 3.1 m is kept in contact with ice and the other end with water at 100° C . At what point along it's length should a temperature of 200° C be maintained so that in steady state, the mass of ice melting be equal to that of the steam produced in the same interval of time. Assume that the whole system is insulated from the surroundings. Latent heat of fusion of ice and vaporisation of water are 80 cal/gm and 540 cal/gm respectively

One end of a copper rod of uniform cross-section and length 150 cm is in contact with ice and the other end with water at 100^(@)C . At what point along its length should a temperature of 200^(@)C be maintained so that in steady state, the mass of the ice melting is equal to that of steam produced in the same interval of time? Assume that whole system is insulated from the surroundings. Latent heat of steam = 537 cal g^(-1) and lalent heat of fusion of ice = 80 cal g^(-1) . .

Boiling water: Suppose 1.0 g of water vaporizes isobarically at atmospheric pressure (1.01xx10^5 Pa) . Its volume in the liquid state is V_i=V_(liqu i d)=1.0cm^3 and its volume in vapour state is V_f=V_(vapour)=1671 cm^3 . Find the work done in the expansion and the change in internal energy of the system. Ignore any mixing of the stream and the surrounding air. Take latent heat of vaporization L_v=2.26xx10^6J//kg .

Class 12 Chemistry | Chapter 5 | Surface Chemistry | Important Questions | CBSE Boards Revision | Part 1

NCERT Chapter 1 The Living World Class 11 Biology Quick Revision Series for NEET

A system S receives heat continuously from an electric heater of power 10 W . The temperature of S becomes constant at 50^(@)C when the surrounding temperature is 20^(@)C . After the heater is switched off, S cools from 35.1^(@)C to 34.9^(@)C in 1 minute . the heat capacity of S is

A system receives heat continuously at the rate of 10 W. The temperature of the system becomes constant at 70^@C when the temperature of the surroundings is 30^@C . After the heater is switched off, the system cools from 50^@C to 49.9^@C in 1 min. The heat capacity of the system is