Subject :NSO Class : Class 7
Study the given figure carefully and select the incorrect statements.
I. X is Ca(OH)2 which forms CaCO3 with the gas
evolved in test tube 1.
II. CaCO3 is completely soluble in water and forms a
clear solution.
III. Gas evolved in test tube 1 will extinguish the candle
flame.
IV. X is NaHCO3 solution which turns milky with the
gas evolved in test tube 1.
A II and IV only
B I and II only
C I and III only
D None of these
H8