Phthalic anhydride is produced by the oxidation of ________?

Flame photometry is used for the determination of compositional analysis of________?

Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

Movement of pipeline caused by thermal expansion is taken care by providing ________?

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

Both asphalt and wax are produced by ________ base crude oils?