The set up below was used to calibrate a thermometer.
observed
(lm:
Ice
manometer
steam
steam
1
boiling water
3
n
Which temperature was being marked with the use of the first set up? (l mark)
) Why should the ice be pure?
(l mark)
1) Why should the thermometer be on steam and not dip in the water when
determining the upper fixed point
(l mark)​