Nusselt number is related to Grashoff number ( Gr ) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

Consider the equilibrium A ( g ) + B ( g ) = AB ( g ) . When the partial pressure of A is 10 -2 atm, the partial pressure of B is 10 -3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

M 10 index of coke indicates its

The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.

Regeneration of molecular seive requires it to be heated to a temperature of about __________ °C.

The activity of pure hydrogen gas at 1000°C and 5 atm pressure

Super conduction in metals is observed at a temperature of __________ °K.

Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

The emf of a Deniell cell can be increased by

A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm 2 .

For efficient performance of a blast furnace, the extent of reduction of Wustite (F e O) should be

Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to