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Chemical Engineering
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Estimate the feed rate, if the composition of the more volatile component in the feed is 50% and the residue is 10% and the equilibrium relation is given by y*= 1.975x. Also the rate of residue is 60 mol/hr.
a)
213 mol/hr
b)
313 mol/hr
c)
413 mol/hr
d)
513 mol/hr
Correct answer is option 'B'. Can you explain this answer?
Telecom Tuners
answered
• 4 days ago
Using Rayleigh equation, we can estimate
ln (F/W)= 1.657
F= 313 mol/hr.
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Tanvi Bokil
asked
• 8 hours ago
Needed a Document for crystallization?
Related:
Mass Transfer
?
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With increase in porosity, the thermal conductivity of a solid substance
a)
increases
b)
decreases
c)
remains unchanged
d)
may increase or decrease; depends on the solid
Correct answer is option 'B'. Can you explain this answer?
Bharadwaj Pawar
answered
• Dec 12, 2020
Because of the effective phonon scattering in the pores.
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Ahmad Faiq
asked
• 16 hours ago
Why cyclopropanes have the greatest molar heat of combustion per Ch2 group?
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Which of the following is involved in production of carboxy haemoglobin?
a)
CO
b)
SO
2
c)
NO
2
d)
NO
3
Correct answer is option 'A'. Can you explain this answer?
Venkatesh Prasad
answered
• Nov 02, 2020
Which gas is mainly produced due to incomplete burning of wood?
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By differencing the temperature, heat added or removed is
a)
Sensible heat
b)
Latent heat
c)
Heat of vaporization
d)
None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Loser No1
answered
• Oct 14, 2020
B
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Radha Ganji
asked
• 16 hours ago
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s
-1
is to be heated. Steam condensate at 95�C is available for heating purpose, also at a rate of 10 Kg.s
-1
. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is
a)
counter flow with process stream on shell side.
b)
counter flow with process stream on tube side.
c)
parallel flow with process stream on shell side.
d)
parallel flow with process stream on tube side.
Correct answer is option 'A'. Can you explain this answer?
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Find the most common example for absorption.
a)
Ammonia and air in solvent water
b)
Ammonia and Carbon dioxide in solvent water
c)
Methane and air in solvent water
d)
Methane and Carbon dioxide in solvent water
Correct answer is option 'A'. Can you explain this answer?
AMOGH C
answered
• Sep 11, 2020
Explanation: Since air won’t dissolve in water the affinity of nitrogen towards the water will be more which converts ammonia into ammonium solution. But in other options the hydrocarbons easily dissolves in polar solvents.
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Shivangi Tripathi
asked
• 17 hours ago
In distillation columns, the number of bubble caps per tray primarily depends upon the
a)
allowable liquid velocity.
b)
allowable gas velocity.
c)
allowable gas and liquid velocities.
d)
feed composition.
Correct answer is option 'C'. Can you explain this answer?
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Lol Video
asked
• 21 hours ago
The difference of wet bulb temperature and adiabatic saturation temperature of unsaturated mixture of any system is
a)
+ve
b)
-ve
c)
zero
d)
none of these
Correct answer is option 'A'. Can you explain this answer?
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Sandeep Agrawal
asked
• yesterday
Pick out the wrong statement.
a)
Orifice baffles are never used in a shell and tube heat exchanger.
b)
Pressure drop on the shell side of a heat exchanger depends upon tube pitch also.
c)
In a horizontal tube evaporator, surface blanketing by air is avoided.
d)
Split ring type and pull through type floating heads are two commonly used floating heads is heat exchangers.
Correct answer is option 'A'. Can you explain this answer?
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Radha Ganji
asked
• yesterday
Heat produced when a steady state current,
I
passes through an electrical conductor having resistance, '
R
' is
a)
IR
b)
I
2
R
c)
IR
2
d)
I
2
R
2
Correct answer is option 'B'. Can you explain this answer?
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Shamaim Malik
asked
• yesterday
In the equation
Q
=
UA
Δ
t
; Δ
t
is
a)
geometric mean temperature difference.
b)
arithmetic mean temperature difference.
c)
logarithmic mean temperature difference.
d)
the difference of average bulk temperatures of hot and cold fluids.
Correct answer is option 'C'. Can you explain this answer?
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Soni Kumari
asked
• yesterday
Maximum allowable concentration of CO
2
in air for safe working is __________ ppm (parts per million).
a)
50
b)
1000
c)
2000
d)
5000
Correct answer is option 'D'. Can you explain this answer?
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Whatsapp Video
asked
• yesterday
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is
a)
0.50
b)
0.60
c)
2
d)
1
Correct answer is option 'A'. Can you explain this answer?
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Radha Ganji
asked
• yesterday
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by
a)
raising the temperature.
b)
lowering the total pressure.
c)
both (a) and (b).
d)
neither (a) nor (b).
Correct answer is option 'C'. Can you explain this answer?
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Shamaim Malik
asked
• yesterday
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m
2
.K. The Biot number is
a)
5.6
b)
0.025
c)
3.5
d)
0.0035
Correct answer is option 'B'. Can you explain this answer?
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Sushant Verma
asked
• yesterday
Main pollutants released from iron & steel industry is
a)
CO, CO
2
& SO
2
.
b)
H
2
S, NO & SO
3
.
c)
CO
2
, H
2
S & NO
2
.
d)
SO
3
, NO
2
& CO
2
.
Correct answer is option 'A'. Can you explain this answer?
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Krish Jat
asked
• yesterday
A forced circulation evaporator is to concentrate 50,000 kg/h of 40% KOH to 70% KOH using steam at 3 bar pressure. The feed temperature and the condensing temperature are both at 45oC. The density of the feed solution is 1.5 gm/cm3. If the overall heat transfer coefficient is 2 kW/m2 oC, calculate the following, i. the steam requirement, ii. the heat transfer area required.
Related:
Evaporators (Part - 1)
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Anshul Rasyotra
asked
• 2 days ago
200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as,
N
c
= 0.5 x 10
-3
kg/m
2
.s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m
2
/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)
a)
0.5
b)
0.05
c)
0.1
d)
0.15
Correct answer is option 'C'. Can you explain this answer?
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Sanidhya Chandola
asked
• 2 days ago
Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
a)
biological oxygen pond.
b)
radial settling tank (thickener) using coagulant (lime & ferrous sulphate).
c)
lagoons.
d)
filtration.
Correct answer is option 'B'. Can you explain this answer?
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Radha Ganji
asked
• 2 days ago
Overall efficiency of the distillation column is
a)
the ratio of number of ideal plates to actual plates.
b)
the ratio of number of actual plates to ideal plates.
c)
same as the Murphree efficiency.
d)
always more than the point efficiency.
Correct answer is option 'A'. Can you explain this answer?
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Karan Gohil
asked
• 2 days ago
The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)
R
and the co-efficient of performance as a heat pump (COP)
HP
are
a)
(COP)
R
= (COP)
HP
= 0.6
b)
(COP)
R
= 2.5; (COP)
HP
= 1.5
c)
(COP)
R
= 1.5; (COP)
HP
= 2.5
d)
(COP)
R
= (COP)
HP
= 2.5
Correct answer is option 'C'. Can you explain this answer?
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Spandana Langoju
asked
• 2 days ago
jH factor for heat transfer is not a function of the __________ number.
a)
Reynolds
b)
Nusselt
c)
Grashoff
d)
both (b) & (c)
Correct answer is option 'D'. Can you explain this answer?
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Gowri Shree
asked
• 2 days ago
Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.
a)
chemical properties
b)
physical properties
c)
degree of turbulence
d)
interfacial area
Correct answer is option 'A'. Can you explain this answer?
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Soni Kumari
asked
• 2 days ago
H
2
S present in gaseous stream can be removed by adsorption on
a)
silica gel
b)
active carbon
c)
bog iron
d)
limestone powder
Correct answer is option 'C'. Can you explain this answer?
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Arjun 7527
asked
• 2 days ago
A one-dimensional crystal of lattice dimension 'a' is metallic. If the structure is distorted way that the lattice dimension is enhanced to '2a'.?
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Dhondi Pradeep
asked
• 2 days ago
Design calculation for multiple component distillation is done by
a)
Ponchon-Savarit method
b)
Mccabe-Thiele method
c)
enthalpy concentration method
d)
tray to tray calculations.
Correct answer is option 'D'. Can you explain this answer?
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Kk Vi
asked
• 2 days ago
For an ideal black body
a)
absorptivity = 1
b)
reflectivity = 1
c)
emissivity = 0
d)
transmissivity = 1
Correct answer is option 'A'. Can you explain this answer?
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Abhinav Sharma
asked
• 3 days ago
Needed a Document for fuel and combustion?
Related:
Environmental Engineering - Notes, Videos, MCQs & PPTs
?
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Amakanwa Nwofor
asked
• 3 days ago
A sulphur dioxide mixture containing 30kmol% sulphur dioxide in the feed is absorbed in a countercurrent operation using water containing 2.5km% sulphur dioxide. If the liquor leaving contains 45kmol% sulphur dioxide and the
...
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exist gas has a partial pressure of 60mmHg and the systems temperature was 30 at atmospheric pressure,determine the liquid to gas ratio for the operation?
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Niranjana Manigandan
asked
• 3 days ago
Needed a Document for EIA?
Related:
Environmental Engineering - Notes, Videos, MCQs & PPTs
?
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to Question
Maddy Pal
asked
• 3 days ago
A stationary mass of gas is compressed without friction from an initial state of 0.4m^3 ?
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Sharayu Holey
asked
• 3 days ago
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?
a)
NO
x
b)
Hg
c)
SO
2
d)
F
Correct answer is option 'C'. Can you explain this answer?
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Ankit Verma
asked
• 3 days ago
Crystal size in a continuous crystalliser depends upon the
a)
rate of heat transfer.
b)
degree of turbulence.
c)
degree of supersaturation.
d)
all (a), (b) and (c).
Correct answer is option 'D'. Can you explain this answer?
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Radha Ganji
asked
• 3 days ago
Air initially at 101. 3 kPa and 40
o
C and with a relative humidity of 50%, is cooled at constant pressure to 30
o
C. The cooled air has a
a)
higher dew point.
b)
higher absolute (specific) humidity.
c)
higher relative humidity
d)
higher wet bulb temperature.
Correct answer is option 'C'. Can you explain this answer?
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Inamulhasan Patel
asked
• 4 days ago
Total reflux in a distillation operation requires minimum
a)
reboiler load
b)
number of plates
c)
condenser load
d)
all (a), (b) and (c)
Correct answer is option 'B'. Can you explain this answer?
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Unmona Borah
asked
• 4 days ago
What will be the wave functions for each of the following canonical forms:- H:H&H( 1):H(-1)and H(-1)H( 1)?
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Bayan Adnan Mohammad Al-
asked
• 4 days ago
The heterocyclic diene employed in cyclo addition reactions is:?
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Arunamunasa123@gmail.com
asked
• 4 days ago
When vaporisation takes place directly at the heating surface, it is called
a)
film boiling
b)
nucleate boiling
c)
vapour binding
d)
none of these
Correct answer is option 'B'. Can you explain this answer?
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Chandan Kumar Saw Kumar
asked
• 5 days ago
The specific volume of a liquid is the reciprocal of?
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Mounika .p
asked
• 5 days ago
Which of the following is the most suitable for extraction in a system having very low density difference ?
a)
Mixer-settler extractor
b)
Centrifugal extractor
c)
Pulsed extractor
d)
Packed extraction tower
Correct answer is option 'B'. Can you explain this answer?
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Dhwani Patel
asked
• 5 days ago
Applications of lignin?
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to Question
Dhruv Rana
asked
• 5 days ago
Which operations use in ammonia linde process ?
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Shafi Shaik
asked
• 5 days ago
Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m
2
and the solvent flow, rate is 400 moles of S/m
2
. hr. The equilibrium data is represented by Y = 3X
2
, where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is
a)
25%
b)
50%
c)
70%
d)
90%
Correct answer is option 'B'. Can you explain this answer?
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Saurabh Badnakhe
asked
• 5 days ago
The steam ejector is used to
a)
remove condensate from the steam pipelines.
b)
create vacuum.
c)
superheat the steam.
d)
none of these.
Correct answer is option 'B'. Can you explain this answer?
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Arunamunasa123@gmail.com
asked
• 5 days ago
Radiant energy received by a body is proportional to (where,
d
= the distance between the object emitting radiation and that receiving it.)
a)
d
b)
d
c)
d
2
d)
d
1.5
Correct answer is option 'C'. Can you explain this answer?
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PARVEEN KUMARI
asked
• 5 days ago
Which of the following is the correct expression of the aeration period in hours?
a)
V/Q
b)
24V/Q
c)
V/24Q
d)
Q/V
Correct answer is option 'B'. Can you explain this answer?
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Rampravesh Yadav
asked
• 6 days ago
Furnace is the major source of heat in refinery processes. Its operation is critical to the smooth, reliable and safe operation of the plant. Answer the following questions based on the operation of furnace. Increase the fuel
...
more
in the furnace.?
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Sri Krishna Ravindra Pra
asked
• 6 days ago
Reynold's analogy states that
a)
N
st
α
f
b)
N
st
α
N
Re
c)
N
Nu
α
f
d)
N
Re
α
f
Correct answer is option 'A'. Can you explain this answer?
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Answer
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Kk Vi
asked
• 1 week ago
For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where,
N
Pr
= Prandtl number)
a)
N
Pr
b)
N
Pr
1/3
c)
N
Pr
-1
d)
N
Pr
-1/3
Correct answer is option 'B'. Can you explain this answer?
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Manish Swaraj
asked
• 2 weeks ago
Relative humidity is the ratio of the
a)
partial pressure of the vapour to the vapour pressure of the liquid at room temperature.
b)
partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.
c)
actual humidity to saturation humidity.
d)
none of these
Correct answer is option 'B'. Can you explain this answer?
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MANAN PATHAK
asked
• 2 weeks ago
Thermal conductivity is maximum for which substance
a)
Silver
b)
Ice
c)
Aluminum
d)
Diamond
Correct answer is option 'D'. Can you explain this answer?
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RENU SHARMA
asked
• 2 weeks ago
Which of the following statement is correct?
a)
Rich class consumes less water
b)
Intermittent water supplies leads to less water consumption
c)
Loss of water is more if the pressure in the distribution system is less
d)
Water consumption is less in flush system
Correct answer is option 'B'. Can you explain this answer?
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Krupa Bagathariya
asked
• 2 weeks ago
poisson distribution how to us. 0.65 antilog
Related:
Pearson's chi square test (goodness of fit)
?
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Sabyasachi Mohapatra
asked
• 2 weeks ago
What type of macrocycles are used in isolation of fullerenes?
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Yasin Mansuri
asked
• 2 weeks ago
Which of the following is the most detrimental for water used in high pressure boiler ?
a)
Silica
b)
Turbidity
c)
Phenol
d)
Dissolved oxygen
Correct answer is option 'A'. Can you explain this answer?
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Akshat Asthana
asked
• 2 weeks ago
Needed a Test for heat exchangers?
Related:
Heat Transfer for Engg. - Notes, Videos, MCQs and PPTs
?
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Answer
to Question
Sana Shakoor
asked
• 2 weeks ago
Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)?
a)
Lagooning
b)
Activated carbon adsorption
c)
Biological oxidation pond
d)
Chemical coagulation
Correct answer is option 'B'. Can you explain this answer?
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Nikhil Kumar
asked
• 2 weeks ago
1 tonne coal =how many coke?
Related:
Coal Carbonization and Coke Oven Plant
?
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Praveen Kumar Reddy
asked
• 2 weeks ago
If determinant of Matrix A is 7 and A is any 3×3 matrix then determinant of 2A^(-1) is ?
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Apurva Goel
asked
• 2 weeks ago
A CSTR has a long inlet pipe. The inlet pipe can be assumed to be operating as a PFR. A tracer is injected at the entrance of the pipe. The E-curve obtained at the exit of the CSTR is shown in the figure below. The ratio (to
...
more
the first place of decimal) of the volume of the long inlet pipe to that of the CSTR is?
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Ritu Shivani Bisht
asked
• 2 weeks ago
Prandtl number for water at 20
o
C is about
a)
7
b)
70
c)
0.7
d)
150.
Correct answer is option 'A'. Can you explain this answer?
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Rushikesh Patil
asked
• 2 weeks ago
If the gas phase composition of a component A is 0.65 and its relative volatility is 2. Find the liquid phase composition.
a)
0.48
b)
0.58
c)
0.68
d)
0.78
Correct answer is option 'A'. Can you explain this answer?
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KISHAN GUPTA
asked
• 3 weeks ago
In which type of boiling the temperature of the liquid exceeds the saturation temperature?
a)
Forced
b)
Natural
c)
Pool
d)
Saturated
Correct answer is option 'D'. Can you explain this answer?
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Megha Rawat
asked
• 3 weeks ago
what is the boiling of water .if the atmosphere is 3.0 atm
Related:
Introduction To Distillation
?
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ROHAN THOMAS
asked
• 3 weeks ago
What is the fire demand of the city of 1lakh population by Buston’s formula?
a)
5663
b)
56630
c)
566300
d)
5663000
Correct answer is option 'B'. Can you explain this answer?
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Ranjeet Chavan
asked
• Dec 23, 2020
A new phase is given for the separation by distillation.
a)
True
b)
False
Correct answer is option 'B'. Can you explain this answer?
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SYED SHOAIB
asked
• Dec 23, 2020
Which among the following is the statement of the ‘Fick’s Law’?
a)
The molar flux of species relative to an observer moving with the molar average velocity is proportional to the concentration gradient of the species.
b)
The mass flux of species relative to an observer moving with the molar average velocity is proportional to the concentration gradient of the species.
c)
The molar flux of species relative to an observer moving with the mass average velocity is proportional to the concentration gradient of the species.
d)
The molar flux of species relative to a stationary observer is proportional to the concentration gradient of the species
Correct answer is option 'A'. Can you explain this answer?
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VUTUKURI SMS
asked
• Dec 22, 2020
In which of the following units, design period is maximized?
a)
Distribution system
b)
Demand reservoir
c)
Water treatment unit
d)
Pipe mains
Correct answer is option 'B'. Can you explain this answer?
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JOSHI KAUSTUBH
asked
• Dec 22, 2020
Match the following
1) Hendry’s law – a)Ideal solution
2) Dalton’s law – b)Non- Ideal solution
3) Raoult’s law -c)Sum of partial pressure
a)
1- (b), 2-(c),3-(a)
b)
1-(a),2-(b),3-(c)
c)
1-(c),2-(b),3-(a)
d)
1-(a),2-(c),3-(b)
Correct answer is option 'A'. Can you explain this answer?
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RENU SHYAM
asked
• Dec 20, 2020
Estimate the diffusion coefficient for ammonia in air t 25 degree Celsius temperature and one atmospheric pressure.
For ammonia,
Molecular weight = 17
Molecular volume = 25.81 cm
3
/gm mole
For air,
Molecular weight = 29
a)
0.4880 cm
2
/s
b)
0.3880 cm
2
/s
c)
0.2880 cm
2
/s
d)
0.1880 cm
2
/s
Correct answer is option 'D'. Can you explain this answer?
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RAJAN KUMAR
asked
• Dec 17, 2020
The boiling phenomenon is known to occur in how many forms?
a)
1
b)
2
c)
3
d)
4
Correct answer is option 'D'. Can you explain this answer?
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DEEKSHA SUBHASH
asked
• Nov 28, 2020
The equilibrium characteristics of the solubility of gas in liquid helps to determine the
a)
Rate
b)
Concentration
c)
Time
d)
No existence of equilibrium characteristics
Correct answer is option 'A'. Can you explain this answer?
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Prathamesh Pagdhare
asked
• Nov 28, 2020
Fenske equation determines the
a)
maximum number of ideal plates.
b)
height of the distillation column.
c)
minimum number of theoretical plates.
d)
optimum reflux ratio.
Correct answer is option 'C'. Can you explain this answer?
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CHETNA PURAN
asked
• Nov 23, 2020
At the gas temperature, the liquid is in equilibrium with vapour for
a)
Saturated gas
b)
Unsaturated gas
c)
Partially saturated gas
d)
None of the mentioned
Correct answer is option 'B'. Can you explain this answer?
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Rana Rohan
asked
• Nov 19, 2020
In Joule`s experiment, an insulated container contains 20 kg of water initially at 25
°
C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms
-2
. Neglecting the heat capacity of agitator, the temperature of water (in
°
C) is
a)
40.5
b)
34.4
c)
26.8
d)
25
Correct answer is option `B`. Can you explain this answer?
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Giridharan Ts
asked
• Nov 19, 2020
A radiator in a domestic heating system operates at a surface temperature of 60 degree Celsius. Calculate the heat flux at the surface of the radiator if it behaves as a black body
a)
697.2 W/m
2
b)
786.9 W/m
2
c)
324.7 W/m
2
d)
592.1 W/m
2
Correct answer is option 'A'. Can you explain this answer?
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AMAN SAHAY
asked
• Nov 19, 2020
The rate equation used to describe the mechanism of convection is called Newton’s law of cooling. So rate of heat flow by convection doesn’t depend on
a)
Convective heat transfer coefficient
b)
Surface area through which heat flows
c)
Time
d)
Temperature potential difference
Correct answer is option 'C'. Can you explain this answer?
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Fernando Lino
asked
• Nov 19, 2020
Convective heat transfer coefficient doesn’t depend on
a)
Surface area
b)
Space
c)
Time
d)
Orientation of solid surface
Correct answer is option 'A'. Can you explain this answer?
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Aneesh C A
asked
• Nov 19, 2020
The Judges of the High Court hold office
a)
during the pleasure of the Chief Justice of India
b)
as long as they desire till
c)
till they have attained 65 years of age
d)
they have attained 62 years of age
Correct answer is option 'D'. Can you explain this answer?
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SANGEETA BALDEV
asked
• Nov 16, 2020
The diagram shows heat conduction through a plane wall. The surface temperature is 475 K and it radiates heat to the surroundings at 335 K. If thermal conductivity of the material is 12.5 W/m degree, find the temperature gradient. Let convective coefficient be 80 W/m
2
degree and radiation factor is 0.9
a)
– 1052.4 degree celsius
b)
– 2052.4 degree celsius
c)
– 3052.4 degree celsius
d)
– 4052.4 degree celsius
Correct answer is option 'A'. Can you explain this answer?
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MAMTA DEVI
asked
• Nov 15, 2020
Many types of heat exchangers have been developed to meet the widely varying applications. Based upon their
(i) Operating principle
(ii) Arrangement of flow path
(iii) Design
Identify the correct statements
a)
1, 2 and 3
b)
1 and 2
c)
2 and 3
d)
1 and 3
Correct answer is option 'A'. Can you explain this answer?
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MAMTA DEVI
asked
• Nov 07, 2020
Establish a relation for the shape factor of cylindrical cavity with respect to itself of depth h and diameter d. The cavity is closed on its outer surface with a flat plate
a)
4 h/4 h + d
b)
4 h + d/h
c)
4 h + d/4 h
d)
h/4 h + d
Correct answer is option 'A'. Can you explain this answer?
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OM SHANKAR
asked
• Oct 17, 2020
Solubility of a gas increases with increase in temperature.
a)
True
b)
False
Correct answer is option 'B'. Can you explain this answer?
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Golu Chaudhary
asked
• Oct 16, 2020
The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there?
a)
One
b)
Two
c)
Three
d)
Four
Correct answer is option 'C'. Can you explain this answer?
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ABHISHEK KUMAR
asked
• Oct 13, 2020
The point where the operating line and the equilibrium line meets in distillation methods is known as
a)
Plait point
b)
Q point
c)
Pinch point
d)
None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
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SHUBHAM CHOUDHARY
asked
• Oct 12, 2020
What is the molecular volume of air at normal boiling point?
a)
29.89 cm
3
/gm mole
b)
39.89 cm
3
/gm mole
c)
49.89 cm
3
/gm mole
d)
59.89 cm
3
/gm mole
Correct answer is option 'A'. Can you explain this answer?
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KANISHK DESHWAL
asked
• Oct 12, 2020
The value of transmissivity may vary from
a)
0-1
b)
1-2
c)
3-4
d)
4-5
Correct answer is option 'A'. Can you explain this answer?
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ARVASHU SINGH
asked
• Oct 08, 2020
The maximum flow through the period at D is
a)
0.3m/min
b)
0.4m/min
c)
0.8m/min
d)
0.9m/min
Correct answer is option 'A'. Can you explain this answer?
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GURSAHEJ SINGH
asked
• Oct 08, 2020
In how many categories heat exchangers are classified on the basis of mechanical design of heat exchanger surface?
a)
2
b)
4
c)
1
d)
3
Correct answer is option 'D'. Can you explain this answer?
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GAUTAM RAJDEV
asked
• Oct 04, 2020
What is the value of Schmidt number for hydrogen?
a)
0.23
b)
0.22
c)
0.21
d)
0.24
Correct answer is option 'B'. Can you explain this answer?
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Kk Vi
asked
• Sep 29, 2020
How many types of convection process are there?
a)
One
b)
Three
c)
Four
d)
Two
Correct answer is option 'B'. Can you explain this answer?
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SHAMA DEVI
asked
• Sep 26, 2020
Figure shows equimolal diffusion between species B and C. Identify the correct molar diffusion rate
a)
N
b
= m
c
/M
b
b)
N
b
= m
b
/M
b
c)
N
c
= m
b
/M
b
d)
N
c
= m
b
/M
c
Correct answer is option 'B'. Can you explain this answer?
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PURNESH KUMRAWAT
asked
• Sep 25, 2020
Consider system A at uniform temperature t and system B at another uniform temperature T (t > T). Let the two systems be brought into contact and be thermally insulated from their surroundings but not from each other. Energy will flow from system A to system B because of
a)
Temperature difference
b)
Energy difference
c)
Mass difference
d)
Volumetric difference
Correct answer is option 'A'. Can you explain this answer?
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Ahmed Adel
asked
• Sep 22, 2020
Radiant energy with an intensity of 800 W/m
2
strikes a flat plate normally. The absorptivity is thrice the reflectivity and twice the transmissivity. Determine the rate of transmission
a)
155.47 W/m
2
b)
145.47 W/m
2
c)
135.47 W/m
2
d)
125.47 W/m
2
Correct answer is option 'B'. Can you explain this answer?
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SHUBHAM SINGH
asked
• Sep 07, 2020
For an air(A)-water vapour(B) mixture, the partial pressure of the air is 5 pa and the total pressure of the system is 15 pa. The absolute humidity in mass of air/mass of water vapour is
a)
0.805
b)
0.311
c)
0.705
d)
0.411
Correct answer is option 'A'. Can you explain this answer?
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