27
54
5.4
2.7
✅ The correct answer is option B.
Statiometery MCQs
Hess’s law of constant heat summation is based on conservation of mass. It deals with
Equilibrium constant
Reaction rate
Changes in heat of reaction
None of these
✅ The correct answer is option C.
The value of gas constant ‘R’ is __________ kcal/kg.mole.°C.
2.79
1.987
3.99
None of these
✅ The correct answer is option D.
Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because
The strong base and strong acid reacts completely
The salt formed does not hydrolyse
Only OH⁻ and H⁺ ions react in every case
The strong base and strong acid reacts in aqueous solution
✅ The correct answer is option C.
A chemical process is said to occur under unsteady state, if the
Inventory changes do not take place
Ratio of streams entering/leaving are independent of time
Flow rates & composition both are time dependent
None of these
✅ The correct answer is option C.
Avogadro number is the number of molecules in one __________ of a gas.
Gram
Kilogram
Gm.mole
Litre
✅ The correct answer is option C.
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
Relative humidity
Relative saturation
Percentage saturation
None of these
✅ The correct answer is option C.
Claussius Clapeyron equation applies to the __________ process.
Sublimation
Melting
Vaporisation
All of the above
✅ The correct answer is option D.
Which of the following expressions defines the Baume gravity scale for liquids lighter than water?
°Be = (140/G) – 130
°Be = 200(G-1)
°Be = 145 – (145/G)
°Be = (400/G) – 400
✅ The correct answer is option A.
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm. gm.
0.5
1
3
5
✅ The correct answer is option A.