Identify 'S': Reddish brown liquid 'S' is dissolved in water. When ethyne is passed through it, turns colourless.

Write the product when Chlorine gas is passed through H2S.

What happens when fluorine gas is passed through water?

What happens when carbon dioxide is passed through lime water?

The colour chage observed when excess ethyne is passed through the solution of bromine water is

Why a black suspension of lead (II) sulfide in water turns white when ozone is passed through it?

When H_(2)S is passed through Hg_(2)^(2+) , we get :

What do you observe when H_2S is passed through lead nitrate solution.

What do you observe when H_2S is passed through lead nitrate.

As the switch S is closed in the circuit shown in figure, current passed through it is.

An aqueous solution of a substance gives a white percipitate on treatment with dil ,HCI which dissolves on heating .When H_(2)S is passed through the hot acidic solution a black precipitate is obtained .The substances are not :