Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such specs are found in

Ink glands or sacs produce coloured pigment which is ejected out into the water and form smoke screen for offence and defence. Such sacs are found in

Ink glands produce a jet of black ink which acts a smoke screen to dodge the attacking enemy. Such glands are found in

An element of group 14 form a red coloured mixed oxide (A) which on treatment with conc HNO_3 gives compound (B) , (B) reacts with HCl to produce a choloride (C) , which is insoluble in cold water but soluble in hot water . (A) on reaction with conc HCl produces (C) . Identify (A), (B) and (C) .