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Full Length Test #9
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 CHEMICAL REACTION ENGINEERING 0%
 CHEMICAL TECHNOLOGY 0%
 ECONOMICS 0%
 FLUID MECHANICS 0%
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 INSTRUMENTATION 0%
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Question 1 of 65
1. Question
1 pointsCategory: APTITUDEBoth the countries have tried their best to have a ____ relationship between them but the constraints of domestic politics have often _____ their bilateral mutual relationship.
Correct
Both the countries have tried to have a friendly (cordial) relationship; the use of ‘but’ suggests that these efforts have not been successful, since political constraints have concealed/ shadowed (eclipsed) their relationship.
Incorrect
Both the countries have tried to have a friendly (cordial) relationship; the use of ‘but’ suggests that these efforts have not been successful, since political constraints have concealed/ shadowed (eclipsed) their relationship.

Question 2 of 65
2. Question
1 pointsCategory: APTITUDEChoose the word which is the exact OPPOSITE of the given words.
DAPPERCorrect
Dapper means smart while ruffled means disheveled or untidy.
Incorrect
Dapper means smart while ruffled means disheveled or untidy.

Question 3 of 65
3. Question
1 pointsCategory: APTITUDEHAILSTORM: BOMBARDMENT
Correct
During a hailstorm, there is a bombardment of hail stones; similarly, in an avalanche, there is a deluge (flood).
Incorrect
During a hailstorm, there is a bombardment of hail stones; similarly, in an avalanche, there is a deluge (flood).

Question 4 of 65
4. Question
1 pointsCategory: APTITUDEThe widespread culture of social networking is leading to heartbreaks and cases of suicides, therefore social networking is hazardous. Which of the following exhibits a pattern of reasoning most similar to the one exhibited in the argument above?
Correct
The question type is that of parallel reasoning. The given argument follows the pattern of
valid reason and conclusion. Option 3 follows the ame flow of reasoning. If the banks
are hiring people with criminal background we can safely assume that banks are not
safe.
Option (A) is wrong We cannot give a general conclusion based on a specific example. One fan died while listening to the song of Honey Singh. This does not mean that the song is the reason for his death. Option 2 is incorrect because smuggling may be to breed turtles or to harm them, so we cannot say whether the conclusion or the course of action is logical for the problem posed. Similarly, option 4 is wrong because oil spills is irrelevant to the discovery of new aquatic species.Incorrect
The question type is that of parallel reasoning. The given argument follows the pattern of
valid reason and conclusion. Option 3 follows the ame flow of reasoning. If the banks
are hiring people with criminal background we can safely assume that banks are not
safe.
Option (A) is wrong We cannot give a general conclusion based on a specific example. One fan died while listening to the song of Honey Singh. This does not mean that the song is the reason for his death. Option 2 is incorrect because smuggling may be to breed turtles or to harm them, so we cannot say whether the conclusion or the course of action is logical for the problem posed. Similarly, option 4 is wrong because oil spills is irrelevant to the discovery of new aquatic species. 
Question 5 of 65
5. Question
1 pointsCategory: APTITUDEIf the square of a number is subtracted from 4052 and the difference is multiplied by 15, the answer so obtained is 41340. What is the number?
Correct
Incorrect

Question 6 of 65
6. Question
1 pointsCategory: APTITUDEThere are four mixtures (P,Q,R and S) containing liquids X and Y in different proportions. Mixture P contains X and Y in the ratio 1:2, Q in the ratio 11:13, R in the ratio 5:3 and S in the ratio 19:5. Which of the following parts, mixed in equal quantity will have the highest concentration?
Correct
Incorrect

Question 7 of 65
7. Question
1 pointsCategory: APTITUDEThere are four persons wearing different colour shirts and four gift packs of colours, same as those of the shirts. The number of ways in which the gifts, one each to a person, could be given such that a gift does not go to a person of his shirt colour is________.
Correct
If ‘n’ things are arranged in a row, the number of ways in which they can, be deranged so that none of them occupies its original place is
Incorrect
If ‘n’ things are arranged in a row, the number of ways in which they can, be deranged so that none of them occupies its original place is

Question 8 of 65
8. Question
1 pointsCategory: APTITUDEIn a 800m race, A beats B by 80m and in 1000m race B beats C by 200m. If in 500m race A beats C by 35sec, then find the speed of B in m/s.
Correct
Incorrect

Question 9 of 65
9. Question
1 pointsCategory: APTITUDEDenim and Cube are two brands of trousers available in the Indian market. Denim is a US brand which was introduced in 1990, while Cobe is an Italian brand introduced in 1997. For both these brands, 20% of the trousers bought in a particular year are disposed off as spoiled exactly two years later. It is known that 10 denim trousers were disposed off in 1997. The following figures show the number of Denim and Cobe trousers in operation from 1995 to 2000 as at the end of each year.
How many Cobe trousers were purchased in 1999?
Correct
In 1999, total number of Cobe trousers = 124
Number of Cobe trousers disposed = 20% of 30=6
Number of trousers bought in 1999 = Total number of Cobe trousers in 1999 – number of trousers purchased 1997 – number of trousers disposed off in 1999 – number of trousers purchased in 1998= 124 – 30 – 6 – (8030) = 50Incorrect
In 1999, total number of Cobe trousers = 124
Number of Cobe trousers disposed = 20% of 30=6
Number of trousers bought in 1999 = Total number of Cobe trousers in 1999 – number of trousers purchased 1997 – number of trousers disposed off in 1999 – number of trousers purchased in 1998= 124 – 30 – 6 – (8030) = 50 
Question 10 of 65
10. Question
1 pointsCategory: APTITUDEThe following question contains a paragraph from which the last sentence has been deleted. From the given options, choose the sentence that completes the paragraph in the most appropriate way.
The plebeian origin of the prints explains why the cultivated Japanese have not, as a rule, looked upon them with much enthusiasm. Only now, when the greatest print treasures have gone out of Japan, are a few Japanese collectors beginning to buy back at high prices works which they allowed to leave the country for a song. The admiration of Europe and America has awakened them to a realization of the distinction of the prints, in spite of the undistinguished nature of their subjects;
Correct
The given paragraph brings to the forefront the mistake committed by the Japanese. They did not value their prints because they were ordinary, but Europe and America took special interest in these prints and took all of them away from Japan and have become a part of the western collections. The paragraph highlights the rectification efforts made by Japan, hence option B is suitable.
Incorrect
The given paragraph brings to the forefront the mistake committed by the Japanese. They did not value their prints because they were ordinary, but Europe and America took special interest in these prints and took all of them away from Japan and have become a part of the western collections. The paragraph highlights the rectification efforts made by Japan, hence option B is suitable.

Question 11 of 65
11. Question
1 pointsCategory: MATHEMATICSLet x be a Random variable with the following probability distribution then the value of E[(1+ 2x)²] is
Correct
Incorrect

Question 12 of 65
12. Question
1 pointsCategory: MATHEMATICSIf the equation cos(x)=x² is solved by Newton Raphson’s method with the initial guess of x=1 then the value of x after 2 iterations would be ___ .
Correct
Incorrect

Question 13 of 65
13. Question
1 pointsCategory: MATHEMATICSThe system of equations, given below, has
Correct
Incorrect

Question 14 of 65
14. Question
1 pointsCategory: MATHEMATICSThe value of the integral
Correct
Incorrect

Question 15 of 65
15. Question
2 pointsCategory: MATHEMATICSThe polar form of the complex number is
Correct
Incorrect

Question 16 of 65
16. Question
1 pointsCategory: THERMODYNAMICSFor a mono atomic ideal gas, the molar Gibb’s energy is given by
The molar volume of gas is 
Question 17 of 65
17. Question
1 pointsCategory: HEAT TRANSFERConcentric tubes A and B of diameters 30 cm and 25 cm are maintained at 540 ºC and 200 ºC temperatures. The emissivity of tube A is 0.87 and that of tube B is 0.26. Determine the net heat transfer by radiation between the two surfaces of tubes. Take σ = 4.875 × 10^8 kCal / hr m² ºC

Question 18 of 65
18. Question
2 pointsCategory: THERMODYNAMICSA system containing 2 kg of gas undergoes a process during which the relation between pressure and volume is PV = constant. If the initial conditions of the gas are given as 100 atm and 2m³ , then what is the final pressure in atm corresponding to the final volume of 5 m³ ?

Question 19 of 65
19. Question
1 pointsA suspension of uniform particles in water at a concentration of 200kg of solids per m³ of slurry is setting in a tank. Density of the particles is 1000 kg / m³ and the terminal velocity of a single particle is 15cm/s. The setting velocity of the suspension is ______cm/s, if the RichardsonZaki index,n is 5. (Terminal or Settling velocity = velocity of single particle × void fraction^n) answer in nearest integer .

Question 20 of 65
20. Question
1 pointsCategory: ECONOMICSIn double declining balance method of depreciation, the fixed percentage factor is equivalent to _____ , if the original value of equipment is Rs. 22,000, salvage value is Rs. 2000 and service life is 10 years.

Question 21 of 65
21. Question
1 pointsCategory: MECHANICAL OPERATIONSThe width and speed of a conveyor belt depends upon the ___ of the material
Correct
Incorrect

Question 22 of 65
22. Question
1 pointsCategory: HEAT TRANSFERUse of bafflers in a agitators help in minimizing the ___ tendency
Correct
Incorrect

Question 23 of 65
23. Question
1 pointsCategory: HEAT TRANSFERReason for operating an evaporator in multiple effect is to secure
Correct
Incorrect

Question 24 of 65
24. Question
1 pointsCategory: FLUID MECHANICSThe viscosity of carbon monoxide at 10^5 Pa and 27 ºC is 15 × 10^6 Ns / m² . The temperature of the gas was increased so that its viscosity becomes double. Then the change in temperature of the gas is ____ ºC .
Correct
Incorrect

Question 25 of 65
25. Question
1 pointsCategory: HEAT TRANSFEROil at 160°C enters a 22 m² single pass countercurrent heat exchanger and exits at 80°C. Cooling water enters at 20°C at a flow rate of 3 kg/sec and leaves at 70°C. (The specific heat of water at the mean temperature of 45°C is 4180 J/kg° C.) Calculate the overall heat transfer coefficient U (W/m² ºC).

Question 26 of 65
26. Question
1 pointsCategory: MASS TRANSFERMcCabeThiele method of binary distillation does not assume that the
Correct
Incorrect

Question 27 of 65
27. Question
1 pointsCategory: MASS TRANSFERThe value of Lewis number for airwater system is around
Correct
Incorrect

Question 28 of 65
28. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGIf the activation energy for an elementary reaction is given as 40kJ / mol , then the rate of reaction at 400K is _______ times the rate of reaction at 500K.

Question 29 of 65
29. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGBack mixing is most predominant in
Correct
Incorrect

Question 30 of 65
30. Question
2 pointsCategory: CHEMICAL REACTION ENGINEERINGThe conversion of a reactant, undergoing a 1st order reaction, at a time equal to three times the half life of reaction is ________%.

Question 31 of 65
31. Question
2 pointsCategory: INSTRUMENTATIONWhich one of the following sensors is used for the measurement of temperature in a combustion process (T>1800ºC)
Correct
Incorrect

Question 32 of 65
32. Question
2 pointsCategory: PROCESS CONTROLOffset which does not vary with time is defined as the ____ error in controlled variable
Correct
Incorrect

Question 33 of 65
33. Question
1 pointsCategory: CHEMICAL TECHNOLOGYIf A and B are the molecular weights of basic raw materials used for the production of styrene, then A + B is equal to____________

Question 34 of 65
34. Question
1 pointsCategory: PROCESS CALCULATIONSAmmonia is kept at 38 ºC and 3 atm pressure. Density of ammonia approximately in kg / m³ is

Question 35 of 65
35. Question
1 pointsCategory: CHEMICAL TECHNOLOGYThe gas which contributes the maximum to the heating value of natural gas is
Correct
Incorrect

Question 36 of 65
36. Question
2 pointsCategory: PROCESS CALCULATIONSThe analysis of the gas entering the secondary converter in a contact sulphuric acid plant is 4% SO2, 13% O2 and 83% N2 (vol%). In the converter SO2 is oxidized to SO3. The gases leaving the converter contain 0.45% SO2 on an SO3 basis. The percent conversion of SO3 is ____ .

Question 37 of 65
37. Question
2 pointsCategory: THERMODYNAMICSThe binary mixture AB forms an azeotrope with a boiling point of 71.8 ºC at 1 bar pressure, the azeotropic composition being 50 mol percent A. The pure component vapour pressure at 71.8ºC are A=0.71 bar; B=0.7432 bar. What is the activity coefficient of A in the liquid, assuming the vapor to be an ideal.

Question 38 of 65
38. Question
1 pointsCategory: THERMODYNAMICSWhat is the fraction of pure ethane that would dehydrogenate at 750 k and 5 atm, if the following reactor goes to equilibrium
C2H6(g) ⇔ C2H4(g) + H2(g)
ΔGº for the reaction at 750 k= 42.576 kJ. Assume ideal gas behavior. 
Question 39 of 65
39. Question
2 pointsCategory: FLUID MECHANICSAir flows through as packed bed of a powder material of 1 cm depth at a superficial gas velocity of 1 cm/sec. A manometer connected to the unit register a pressure drop of a 1 cm of water. The bed has a porosity of 0.4. Assuming the KozenyCarman equation is valid for the range of study, the particle size of the powder is ____mm. (Patm =1.23 kg/m³ ; μair= 1.8 × 10^5 kg/msec)
Correct
Incorrect

Question 40 of 65
40. Question
1 pointsCategory: FLUID MECHANICSA liquid of specific gravity 1.25 is draining from the bottom of a large open tank through a 50 mm ID pipe. The drain pipe ends at a position 5m below the surface of the liquid in the tank. The velocity of flow at the point of discharge from pipe is ___m/sec.

Question 41 of 65
41. Question
2 pointsCategory: MATHEMATICSThe differential equation
y′′ − 5y′ + 6y = 0 with boundary conditions y(0) = 2, y′(0) = 2Correct
Incorrect

Question 42 of 65
42. Question
2 pointsCategory: MATHEMATICSThe value of along the circle c : x² + y² = 4 in the anti clock wise direction is ___ .
Correct
Incorrect

Question 43 of 65
43. Question
2 pointsCategory: MATHEMATICSA coin is tossed until a head appears. What is expectation of the number of tosses required. Expectation = ∑ pi xi , pi = probability
Correct
Incorrect

Question 44 of 65
44. Question
1 pointsCategory: MASS TRANSFERWhich of the following is correct for extractive distillation solvent?
Correct
Incorrect

Question 45 of 65
45. Question
1 pointsCategory: MASS TRANSFERIn a binary distillation column, if the feed contains 20 mol% vapor , the q line will have a slope of ___
Correct
Incorrect

Question 46 of 65
46. Question
1 pointsAs we reach infinite reflux ratio, the slope of operating line,
Correct
slope of operating line = R/R+1
take r common from numerator as well as denominator
1/(1+(1/R)) will be left , now put R → ∞ , u will get slope =1 i.e diagonal line
Incorrect
slope of operating line = R/R+1
take r common from numerator as well as denominator
1/(1+(1/R)) will be left , now put R → ∞ , u will get slope =1 i.e diagonal line

Question 47 of 65
47. Question
1 pointsCorrect
Incorrect

Question 48 of 65
48. Question
1 pointsCorrect
Incorrect

Question 49 of 65
49. Question
1 pointsCorrect
Incorrect

Question 50 of 65
50. Question
1 pointsCorrect
Incorrect

Question 51 of 65
51. Question
1 pointsAn aqueous sodium chloride solution(10 wt %) is fed into a single effect evaporator at a rate of 10000 kg/h. It is concentrated to a 20 wt% sodium chloride solution. The rate of consumption of steam in the evaporator is 8000 kg/h. The evaporator capacity (kg/h)is________.
Correct
Incorrect

Question 52 of 65
52. Question
1 pointsCorrect
Incorrect

Question 53 of 65
53. Question
1 pointsThe reaction rate constant at two different temperatures T1 &T2 are related by
Correct
Incorrect

Question 54 of 65
54. Question
1 pointsWhat pressure drop unit length (Pa/m) is required in order to pump water at 25°C through a pipe 5 cm in diameter at a rate of 68 cm³/sec? The viscosity of water at 25°C is 1cP.
Correct
Incorrect

Question 55 of 65
55. Question
1 pointsConsider three infinite parallel plates. Plate 1 is maintained at 1227°C and plate 3 is maintained at 174°C. Emissivity is equal to that of a black body. Plate 2 is placed between plates 1 and 3 and receives no heat from external sources. The temperature of plate 2 is ___K.
Correct
Incorrect

Question 56 of 65
56. Question
1 pointsA reactor has been installed at a cost of Rs.50000 and is expected to have a working life of 10 yr with a scrap value of Rs10000. The capitalized cost (in Rs) of the rector based on an annual compound interest rate of 5% is
Correct
Incorrect

Question 57 of 65
57. Question
1 pointsA cylindrical pressure vessel of volume of 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125 N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/dia ratio of 3 will be closed to_______mm.
Correct
Incorrect

Question 58 of 65
58. Question
1 pointsCorrect
Incorrect

Question 59 of 65
59. Question
1 pointsCorrect
Incorrect

Question 60 of 65
60. Question
1 pointsMatch the product in Group I with the name of the process in GroupII.
GroupII GroupII
P.Sodium Carbonate 1.Haber
Q.Ammonia 2.Solvay
R.Sulphuric acid 3. Fischer tropsch
4.ContactCorrect
P2, Q1, R4
Incorrect
P2, Q1, R4

Question 61 of 65
61. Question
1 pointsCorrect
Incorrect

Question 62 of 65
62. Question
1 pointsCorrect
Incorrect

Question 63 of 65
63. Question
1 pointsCorrect
Incorrect

Question 64 of 65
64. Question
1 pointsCorrect
Incorrect

Question 65 of 65
65. Question
1 pointsCorrect
Incorrect
0sincostansin^{1}cos^{1}tan^{1}πex^{y}x^{3}x^{2}e^{x}10^{x}^{y}√x^{3}√x√xlnlog()1/x%n!789+MS456–M+123×M0.EXP÷MR±RNDC=MC 
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