A student, took four metal P, Q, R and S and earned out different experiments to study the properties of metals. Some of the observations were: • All metals could not be cut with knife except metal R. • Metal P combined with oxygen to form an oxide M2O3 which reacted with both acids and bases. • Reaction with water. P — Did not react either with cold or hot water but reacted with steam Q — Reacted with hot water and the metal started floating R — Reacted violently with cold water. S — Did not react with water at all.(i) Based on the above observations answer the following:(a) P (b) R (c) S (d) Q(ii) Out of the given metals, the metal Q is (a) Iron (b) Zinc (c) Potassium (d) Magnesium(iii) Metal which forms amphoteric oxides is (a) P (b) Q (c) R (d) S(iv) The increasing order of the reactivity of the four metals is: (a) P <Q < R < S(b) A < R < Q < P(C) S < P < Q < R(d) P < R < Q < S