Chemical Engineering MCQs

Page No. 137

Nickel base alloys with ______________ are known as monel metal?


aZinc


bTin


cCopper


dMolybdenum


View Answer Copper

Glass is corroded by________________?


aFluorine (dry or wet)


bSulphuric acid


cPhosphoric acid


dNone of these


View Answer Fluorine (dry or wet)

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)________________?


a RT ln K


b -RT ln K


c-R ln K


dT ln K


View Answer -RT ln K

For the reversible exothermic reaction, N2 + 3H2 ⇌ 2NH3, increase of pressure would________________?


a Shift the equilibrium towards right


b Give higher yield of NH3


c Both B. and C


dNeither A. nor B


View Answer Both B. and C

How many atoms are there per unit cell in a body centred cubic lattice system ?


a6


b5


c3


d2


View Answer 2

Bush bearings are made of______________________?


aMild steel


bPhosphorous bronze


cWhite metal alloys


dNone of these


View Answer Phosphorous bronze

Presence of cobalt in steel improves its____________________?


aCutting ability


bCorrosion resistance


cTensile strength


dNone of these


View Answer Cutting ability

For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?


a6738.9


b6753.5


c7058.3


d 9000


View Answer 6753.5

A hardness depth of about 3 mm can be achieved by induction hardness in ______________ seconds?


a5


b100


c250


d500


View Answer 5

Wrought iron is having very high ________________?


aHardness


bStrength


cCorrosion resistance


dSusceptibility to changes in its properties by heat treatment


View Answer Corrosion resistance

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