FBISE Paper (2017 SUPP.) MCQs and Answers with explanation 1. The unit of Kc for a reaction with equal number of moles of reactants and products will a) mole 2 dm -6 b) moledm 3 c) moledm -3 d) none of these ... Answer is d) Explanation: There is no unit for Kc when number of moles of reactant(s) and product(s) are same. show Answer 2. Pitch is produced by a) coal b) coal torr c) coal gas d) petroleum ... Answer is b) Explanation: coal torr is a source of many organic compounds such as benzene, and its derivatives. These are very useful in synthesis of plastic, dyes, fiber drugs etc. The residue left behind after synthesis of these products is called pitch. show Answer 3. The colour of methyl red in solution of pH= 9 a) red b) yellow c) blue d) pink ......
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