The power of refrigerator,which freezes 100gm of water at `10^(0)C` into ice at `0^(0)C` in `100sec` is
A) 1400 W B)1200 W C) 387 W D) 1080 W

pH at which dissociation of pure water at 100°C is maximum ( K_w = 1.0* 10^(-12) at 100°C) is

The resistance of a conductor is 5Omega at 50^(@) C and 6Omega at 100^(@)C . The resistance at 0^(@)C is

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 ms^(1) . The mass per unit length of water in the pipe is 100 kgm^(-1) . What is the power of the engine? (a) 400 W (b) 200W (c) 100W (d) 800W

At 100^@C , K_w =10^(-12) . PH of pure water at 100^@C will be

One horse power is equal to : (a) 1000W (b) 500W (c) 764W (d) 746W

Which of the following are path functions (A) W (B) Q (C) Q+W (D) H-TS

Which of the following are path functions (A) W (B) Q (C) Q+W (D) H-TS

At what pH at 100^(@) C , the solution will be basic (K_(w) " at " 100^(@) C " is " 5.6 xx 10^(-13))

In a container of negligible heat capacity 200 gm ice at 0^(@) C and 100 gm steam at 100^(@) C are added to 200 gm of water that has temperature 55^(@) C. Assume no heat is lost to the surroundings and the pressure in the container is constant of 1.0atm (L_(f)=80 cal//gm,L_(v)=540cal//gm, s_(w)=1 cal//gm^(@)C) At the final temperature, mass of the total water present in the system, is

The operating temperature of the filament of lamp is 2000^(@) C . The temperature coefficient of the material of the filament is 0.005^(@) C^(-1) . If the atmospheric temperature is 0^(@) C , then the current in the 100 W - 200 V lamp when it is switched on is nearest to