Q NO. 1: Choose the right answer. /131) Petroleum is refined by:a) Simple distillation b) Fractional distillationb) Destructive distillation d) Dry distillation2) Main component of natural gas is:a) Methane b) Ethane c) Propane d) Propene3) Pitch is black residue of:a) Coke b) Coal c) Coal tar d) Coal gas4) Vital Force Theory was given by:a)… Continue reading Previous paper class 10th(Chemistry)