Stoichiometry MCQ with Answers - Set 11 - ObjectiveBooks

# Practice Test: Question Set - 11

1. Volume percent for gases is equal to the
(A) Weight percent
(B) Mole percent
(C) Weight percent only for ideal gases
(D) Mole percent only for ideal gases

2. Pick out the wrong unit conversion of heat transfer co-efficient.
(A) 1 kcal/m2.hr.°C = 0.2048 BTU/ft2.hr. °F. = 1.163 W/m2.°K
(B) 1 kcal/m2.hr.°K = 1.163 W/m2.°C
(C) 1 W/m2.°C = 0.1761 BTU/ft2.hr.°F.
(D) 1 BTU/ft2.hr.°F = 4.88 kcal/m2.hr.°C = 20.44 kJ/m2.hr°C = 5.678 W/m2.°C

3. One micron is equal to
(A) 10-4 mm
(B) 10-4 cm
(C) 10-6 m
(D) Both (b) & (c)

4. Viscosity of atmospheric air may be about ________ centipoise.
(A) 0.015
(B) 1.5
(C) 15
(D) 150

5. 1 centipoise is equivalent to
(A) 1 gm/cm.second
(B) 1 centistoke
(C) 2.42 lb/ft.hr
(D) 2.42 lb/ft.second

6. Kopp's rule is concerned with the calculation of
(A) Thermal conductivity
(B) Heat capacity
(C) Viscosity
(D) Surface tension

7. The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
(A) Temperature & pressure
(B) Number of intermediate chemical reactions involved
(C) State of aggregation & the state of combination at the beginning & the end of the reaction
(D) None of these

8. Validity of the relationship, inputs = outputs, holds good for the system at steady state
(A) With chemical reaction
(B) Without chemical reaction
(C) Without chemical reaction & losses
(D) None of these

9. With rise in pressure, the solubility of gases in solvent, at a fixed temperature
(A) Increases
(B) Decreases
(C) Remains unchanged
(D) Decreases linearly

10. At standard conditions,

N2 + 2O2  2NO2; ΔG° = 100 kJ/mole
NO + ½O2
2NO2; ΔG° = -35 kJ/mole

The standard free energy of formation of NO in kJ/mole is

(A) 15
(B) 30
(C) 85
(D) 170

11. NaOH contains ________ percent oxygen.
(A) 1
(B) 10
(C) 16
(D) 40

12. Pick out the wrong unit conversion of calorific value.
(A) 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
(B) 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3
(C) 1 BTU/lb = 2.3 kcal/kg
(D) 1 kcal/m3 = 0.1124 BTU/ft3

13. Pick out the wrong statement.
(A) One kg-mole of an ideal gas occupies 22.4 m3 at N.T.P.
(B) One lb-mole of an ideal gas occupies 359 ft3 at N.T.P.
(C) One gm-mole of an ideal gas occupies 22.4 liters (i.e., 22400 c.c) at N.T.P.
(D) Density of dry air at N.T.P. is 1 gm/litre

14. A bypass stream in a chemical process is useful, because it
(A) Facilitates better control of the process
(B) Improves the conversion
(C) Increases the yield of products
(D) None of these

15. 1 kgf/cm2 is not equal to
(A) 1 torr
(B) 1 bar
(C) 10000 mm wc
(D) 100 KPa = 100,000 N/m2

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