I need it badly. Please answer asap

A Blast Furnace makes pig iron containing 3.6% C, 1.4% Si, 95% Fe. The ore is 80% Fe2O3, 12% SiO2 and 8% Al2O3. The coke rate is 1 kg of coke per kg of pig iron, and it contains 90%C, and 10% SiO2. The flux rate is 0.4 kg per kg of pig iron, and it is pure CaCO3. The blast furnace gas contains 28% CO and 12%CO2, Assume that there is no iron loss through slag. The atomic mass of Fe, Si and Ca are 56, 28 and 40, respectively. Q.71 The weight of the ore used per ton of pig iron is (A) 3.0 tons (B) 1.7 tons (C) 1.0 tons (D) 0.5 ton Q.72 The weight of the slag made per ton of pig iron is (A) 821 kg (B) 735 kg (C) 633 kg (D) 450 kg Q.73 The volume (at NTP) of the blast furnace gas produced per ton of pig iron is (A) 3789 m (B) 4256 m (C) 5797 m (D) 7234 m