Glass is
A.a crystalline solid
B.a super cooled liquid
C.a solid having a definite melting point
D.a compound of Ca Na Si and O
Category: Chemical Engineering Mcqs
Limestone is predominantly
A.magnesium carbonate
B.sodium carbonate
C.calcium carbonate
D.potassium carbonate
All substances emit radiation, the quality and quantity depending upon the absolute temperature and the properties of the material composing the radiating body. The above statement is known as the statement of
A.Planck’s law
B.Kirchhoff’s law
C.Stefan-Bolzmann’s law
D.Law of radiation
E.D Alambert’s rule
Stability of nucleus depends upon the ratio of
A.electron to proton
B.neutron to proton
C.neutron to electron
D.none of the above
For a nominal interest rate of 20 per cent compounded continuously the effective annual interest rate will be
A.equal to 20 per cent
B.more than 20 per cent
C.less than 20 per cent
D.equal to or less than 20 per cent
Which of the following reactions is an exothermic reaction?
A.CaO(s) + 3C(s) ?CaC2 + CO(g)
B.CaCO3(s) ? CaO(s) + CO2(g)
C.CaC2(s) + H2O(I) ? Ca(OH)2 + C2H2(g)
D.C(s) + CO2(g) ?2CO(g)
What energy transformation takes place when ice is converted into water
A.Heat energy to kinetic energy
B.Kinetic energy to heat energy
C.Heat energy to latent heat
D.Heat energy to potential energy
E.None of the above
Quicklime is
A.Ca(OH)2
B.CaCO3
C.CaO
D.NaOH
The heat of sum reaches to us according to
A.radiation
B.conduction
C.convection
D.None of the above
Radioactive decay is a
A.zero-order reaction
B.first-order reaction
C.second-order reaction
D.third-order reaction
