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Free download in PDF Stoichiometry General Knowledge Objective Type Questions(MCQs) & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
21
The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?
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22
An equation for calculating vapour pressure is given by, log10 P = A – B(t + c). This is called the________________?
A
Kistyakowsky equation
B
Antoine equation
C
Kopp’s rule
D
Trouton’s rule
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23
A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c?
A
283
B
566
C
293
D
141.5
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24
1 BTU/lb.←°F is equivalent to ____________ kcal/kg.°C?
A
1
B
2.42
C
1.987
D
4.97
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25
Which of the following is insensitive to changes in pressure ?
A
Heat of vaporisation
B
Melting point
C
Heat of fusion
D
Both B. and C.
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26
°API gravity of water at N.T.P. is about__________________?
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27
Pick out the wrong unit conversion of heat transfer rate?
A
1 kcal/hr= 1.163 Watt
B
1 Watt = 1.163 kcal/hr
C
1 BTU/ft2.hr = 2.712 kcal/m2.hr
D
1 kcal/m2.hr = 0.3687 BTU/ft2.hr = 1.163 Watt/m2
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Answer: 1 Watt = 1.163 kcal/hr
28
Othmer chart is useful in estimating the heat of_______________?
A
Mixing
B
Wetting
C
Adsorption
D
None of these
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29
Concentration of a solution expressed in terms of _______________ is independent of temperature?
A
Molarity
B
Normality
C
Molality
D
None of these
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30
Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is_______________?
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31
The reaction A + B → C has been conducted in a reactor as shown below. The number of boundaries around which material balance can be written, are_________________?
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32
Applicability of Clausius-Clapeyron Equation is subject to the condition that the __________________?
A
Vapor follows ideal gas law
B
Volume in the liquid state is negligible
C
Both A. & B.
D
Neither A. nor B.
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33
A vapor whose partial pressure is less than its equilibrium vapor pressure is called a ______________ vapor?
A
Saturated
B
Supersaturated
C
Superheated
D
None of these
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34
Lower wall courses of soaking pits are made of _____________ bricks to avoid the action of molten slag & scale?
A
Chrome or magnesite
B
Silicon carbide
C
Silica
D
Low duty fireclay
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Answer: Chrome or magnesite
35
Refractories used in/for ______________ should have low thermal conductivity?
A
Coke ovens
B
Insulation
C
Regenerators
D
Muffle furnaces
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36
Faster rate of drying of moulded refractories results in high ______________ of refractories?
A
Green strength
B
Voids
C
Shrinkage
D
Both B. and C.
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37
Dry air is a mixture of__________________?
A
Vapors
B
Gases
C
Both A. & B.
D
Neither A. nor B.
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38
For an ideal solution, the total vapor pressure varies _____________ with the composition (expressed as mole fraction)?
A
Inversely
B
Exponentially
C
Linearly
D
Negligibly
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39
The unit of specific heat at constant pressure, Cp, in SI unit is__________________?
A
W/m2°C
B
J/kg°K
C
W/m°K
D
J/m3°K
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40
Kopp’s rule is useful for the determination of_____________________?
A
Molal heat capacities of gases
B
Heat capacities of solids
C
Activation energy
D
Heat capacities of gases
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Answer: Heat capacities of solids
