Chemically philosopher of wool is :

Philosopher’s wool ZnO -> 112. Malachite and azurite are used respectively are : (a) Blue and green pigment (b) Red and green pigment (c) Green and blue pigment (d) Green and red pigment Malachite -> green Azurite -> Blue 113. HgCl2 is a covalent compound, sparingly soluble in water, the solubility increases by the addition of chloride ions due to : (a) common ion effect (b) formation of complex [HgCl4]2– (c) weakening of Hg – Cl bonds (d) strong ion-dipole forces 2- - 2 4 HgCl +2Cl HgCl -> (soluble)