Subject :NSO Class : Class 6
Select the incorrect statements.
I. In railway tracks, space is left between two rails
at the joint to allow for the expansion of iron rails
during winter.
II. For gases, solubility in water decreases with rise
in temperature.
III. When mercury thermometer is used to measure
the temperature, a chemical change takes place.
IV. At a particular temperature, the amount of salt or
sugar that can be dissolved in 100 mL of water is
same.
V. Galvanisation involves a physical change.
A I and II only
B III and V only
C I, III, IV and V only
D I, II, III, IV and V