Define suspension with example:

Ans : - a suspension is a a heterogeneous mixture in which the small particles of all solid are are spread through out a liquid without this eg : - top water mixture , Muddy Water, sand particles ect-

im not exactly sure but i think its b!

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.