Iron reacts with blue vitriol to give green vitriol and reddish-brown metal. Green vitriol and the respective metal is:
(a) Ferrous sulphate, Copper
(b) Copper sulphate, Silver
(c) Ferrous sulphate, Silver
(d) Copper sulphate, Copper

Okay this will take 1 hour okay dont forget me.

The correct answer is "hydrogen".

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source:

Hello,#agreed with joseph002.i got my source also from  source: hope this