Match the following :

(a) CuSO4 5H2O	1. Lunar caustic
(B) ZnCO3	2. Philosopher's wool
(c) AgNO3	3. Blue vitriol
(d) ZnO	4. Calamine

Which statement is correct 

Wohler synthesised organic compound (urea) from an inorganic compound ammonium cyanate.

Wohler synthesised inorganic compound (urea) from an organic compound ammonium cyanate.

Wohler synthesised organic compound (urea) from an inorganic compound ammonium isocyanate.

Bordeaux mixture is

The antiseptic compound present in dettol is

A colloidal system in which a liquid is dispersed in a liquid is called

The density of water 1 g/cc. This is strictly valid at