Which of the following represents the correct match for items in Column A with those in Column B. Column A Column B
I. Nylon (i) Thermoplastic
II. PVC (ii) Thermosetting plastic
III. Bakelite (iii) Fibre

(a) 1-(ii), 11-(iii), 111-(i)

(b) 1-(iii), 11-(i), 111-(ii)

(c) 1-(ii), 11-(i), 111-(iii)

(d) 1-(iii), 11-(ii), 111-(i)

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)