A.always less than the wet-bulb temperature of entering air
B.always equal to the wet-bulb temperature of entering air
C.always greater than the wet-bulb temperature of entering air
D.always equal to the dry-bulb temperature of entering air.
A.iron vanadium tungsten
B.iron molybdenum tungsten
C.iron nickel cobalt
D.iron vandadium molybdenum
A.absorptivity = 0
B.reflectivity = 0
C.absorptivity = reflectivity = 1
D.absorptivity + reflectivity = 1
A.sodium metal and chlorine
B.hydrogen and oxygen
C.hydrogen chlorine and sodium hydroxide solution
D.hydrogen chlogrine and soda ash
A.the fractional conversion at any time is same for constant volume systems and variable-volume systems
B.the fraction conversion at any time is more for constant volume systems than variable-volume systems
C.the fractional conversion at any time is less for constant-volume systems than variable-volume systems
D.the concentration of reactant at any time is same for constant-volume systems and variable-volume systems.
A.Ionising power of ?-rays is higher than that of ?-rays
B.Penetrating power of ?-rays is higher than that of ?-rays
C.?-rays are composed of positively charged particles of mass 2
D.?-rays travel faster than ?-rays
A.decreases with increase in temperature from 140?C to 175?C
B.increases with increase in temperature to maximum at 175-180?C then falls off sharply
C.decreases linearly with increase in temperature
D.is independent of temperature
A.boiling point
B.saturation temperature
C.critical temperature
D.inversion temperature
A.Pensky-Martens apparatus
B.Abel apparatus
C.Saybolt chromometer
D.none of the above
A.bubble point
B.dew point
C.wet-bulb temperature
D.dry-bulb temperature
