1. The average value of heat of neutralisation of dilute solution of strong acids and strong bases is about __________ kcal/kg.mole of water formed.
6680
13360
2481
97302
✅ The correct answer is option B.
Statiometery MCQs
2. Kinetic theory of gases stipulates that, the
Energy is lost during molecular collisions
Molecules possess appreciable volume
Absolute temperature is a measure of the kinetic energy of molecules
None of these
✅ The correct answer is option C.
3. The atomic heat capacities of all solid elements __________ with decrease in temperature.
Increases
Decreases
Remains unchanged
Approach zero at 0°C
✅ The correct answer is option B.
4. The vapor pressure of water at 100°C is
100N/m²
76 cms of Hg
13.6 cms of Hg
760 mm wc
✅ The correct answer is option B.
5. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?
0.2
0.1
0.4
0.6
✅ The correct answer is option D.
6. Volume occupied by one gm mole of a gas at S.T.P. is
22.4 litres
22400 litres
22.4 c.c
359 litres
✅ The correct answer is option A.
7. The viscosity of water at room temperature may be around one
Centipoise
Poise
Stoke
Both B & C
✅ The correct answer is option A.
8. Heat of reaction is not influenced by
The route/method through which final products are obtained
The physical state (e.g., solid, liquid or gaseous) of reactants and products
Whether the reaction is carried out at constant temperature or constant pressure
None of these
✅ The correct answer is option A.
9. Density of carbon dioxide is __________ kg/Nm³.
44/22400
44/22.4
22.4/44
None of these
✅ The correct answer is option B.
10. A bypass stream in a chemical process is useful, because it
Facilitates better control of the process
Improves the conversion
Increases the yield of products
None of these
✅ The correct answer is option A.