A. 300
B. 1100
C. 700
D. 150
CHEMICAL ENGINEERING
Final product of uranium extraction plant at Jadugoda (Bihar) is________________?
A. Uranium
B. Uranium oxide
C. Uranium carbide
D. Magnesium diuranate
Batch tray dryers suffers from the disadvantage of______________________?
A. High maintenance cost
B. Non-uniform & low production rate
C. High labour cost & low heat economy
D. All ‘a’, ‘b’ & ‘c’
In the free convection regime of pool boiling, the heat flux is proportional to__________________?
A. Δt1/2
B. Δt2
C. Δt5/4
D. Δt
Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm) ?
A. Trough washer
B. Baum jig washer
C. Spiral separator
D. Froth floatation
The rate of the heterogeneous catalytic reaction A(g) + B(g) → C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction is_______________?
A. Absorption of A
B. Surface reaction between absorbed A and absorbed B
C. Surface reaction between absorbed A and B in the gas phase
D. Surface reaction between A in the gas phase and absorbed B
Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these
In β-decay of radioactive material, the ratio of neutron to proton____________________?
A. Increases
B. Remain same
C. Decreases
D. Is unpredictable; may increase or decrease
Exposure to SO2 containing chimney gases results in the__________________?
A. Reduction in strength of leather & cloth
B. Acceleration of corrosion rates of metals
C. Increased drying & hardening time of paints
D. All A., B. and C.
With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?
A. Constant
B. Conversion
C. Both A. & B.
D. Neither A. nor B.
