(b) Compound A (CH20) gives off oxygen on treatment with sodium metal and also decolonizes Br in CCL to give organic compound B. Compound A on treatment with b in NaOH gives lodoform and a salt C which after acidification gives a white solid D(CHO). Using knowledge of organic chemistry, identify structures A, B, C and D. (10 marks)

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

it is the most commonly accepted one

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.