Chemical Engineering MCQs

A. Cd = cc/cv
B. Cd = cc.cv
C. Cd = cv/ cc
D. None of these

A. 20 m/sec
B. 10 m/sec
C. 5 √2 m/sec
D. 5 m/sec

A. Δp/ρ = 4f (l/d) (v2/2gc)
B. Δp = 32 (μlv/gc. d2)
C. Δp/l = 150 [(1 – ε)/ε3]. (μ.v0
2/g2cd)

A. Venturimeter
B. Orificemeter
C. Rotameter
D. Pitot tube

A. Velocity and relative roughness
B. Head loss and velocity
C. Reynold number, relative roughness and head loss
D. Reynolds number and friction factor

A. 100
B. 200
C. 320
D. 160

A. 1/d
B. 1/d2
C. 1/d5
D. D2

A. Provided in the discharge line
B. Generally a globe valve
C. Provided to prevent liquid from backing up through the pump when the pump is turned off or
AccIdently stops running

A. Very low speeds
B. Smaller discharge
C. Higher capital &maintenance cost
D. High vibrations

A. Greatly affected by moderate changes in pressure
B. Greatly affected only by moderate changes in temperature
C. Not affected with moderate change in temperature & pressure
D. Sensible to changes in both temperature & pressure