Match the following.

Of which type is each of the following reactions?

(a) CaO + H₂O —> Ca(OH)₂ + Heat

(b) C+ O₂ —>CO₂

(c) Cl₂+ H₂ --> 2HCl

(d) 2Mg + O₂---> 2MgO

Write the equations for each of the following reactions and name the reactants and products of each.

(a) Coal was burnt in air.

(b) Magnesium wire was lit.

(c) Dilute hydrochloric acid was poured on to some zinc.

(d) Water was poured on calcium oxide.

Observe what happens when lemon juice falls on a Shahbad tile.

Find out about the effects that perfumes have on jewelry / ornaments.