Unit of power is____________________?

A. Joule
B. Watt
C. Joule/Second
D. Both B. & C.

Water content in ground refractory material to be shaped into bricks by hand moulding is about _____________ percent?

A. 5
B. 20
C. 40
D. 55

A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be_______________?

A. -136.5°C
B. – 136.5°K
C. -273°C
D. 0°K

The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is________________?

A. H2O > C2H5OH > CS2
B. CS2 > C2H5OH > H2O
C. H2O > CS2 > C2H5OH
D. CS2 > H2O > C2H5OH

Validity of the relationship, inputs = outputs, holds good for the system at steady state________________?

A. With chemical reaction
B. Without chemical reaction
C. Without chemical reaction & losses
D. None of these

For a given mass of a gas at constant temperature, if the volume ‘V’ becomes three times, then the pressure ‘P’ will become______________?

A. P/3
B. 3P
C. 9P2
D. 9P

One Newton is equal to ______________ dynes?

A. 102
B. 103
C. 104
D. 105

Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the_____________?

A. Temperature
B. Volume of solution
C. Moles of non-volatile solute
D. None of these

An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

A. Cork
B. Saw dust
C. Sand
D. Chemically prepared foam

Magnesite refractories are used for the construction of those furnaces, which are_______________?

A. Not required to resist the corrosive action of basic slag
B. Not subjected to fluctuation in temperature
C. Used for raising & maintaining high temperature
D. Both B. and C.