If hydrogen sulphide gas is passed into a solution of a pure iron chloride, a yellow deposit appears. If the deposit is filtered, a pale green solution is left behind. The pale green solution is
A gas jar was inverted over burning yellow phosphorus floating over water in a beaker. After burning, the water level was found to rise in the gas jar. The water level rises because
A.
pressure inside the gas jar is greater than pressure outside it
B.
the air in the gas jar had been used up by burning
C.
oxygen in the gas jar had been used up by burning
D.
nitrogen in the gas jar had been used up by burning
E.
the temperature in the jar had risen considerably
