Electric bulbs are made of ________ glass?

The presence of impurities in iron________?

The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is ________ BTU/hr?

1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole. K, the final temperature will be?

Heating of ________ to 120°C, produces plaster of paris?

The minimum temperature to which the water can be cooled in a cooling tower is the ________ temperature of air?