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Full Length Test #5
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 APTITUDE 0%
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 CHEMICAL TECHNOLOGY 0%
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 HEAT TRANSFER 0%
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Question 1 of 64
1. Question
1 pointsCategory: APTITUDEHarry _____ into the annual general meeting and disrupted the proceedings by his unruly demeanor.
Correct
Harry disrupted the meeting hence interloped is the appropriate word. Interlope means to intrude or encroach.
Incorrect
Harry disrupted the meeting hence interloped is the appropriate word. Interlope means to intrude or encroach.

Question 2 of 64
2. Question
1 pointsCategory: APTITUDEClosely related ?
EVIDENCE
Correct
Evidence means proof or confirmation.
Incorrect
Evidence means proof or confirmation.

Question 3 of 64
3. Question
1 pointsCategory: APTITUDEHe confidently asked the crowd if they thought he was right, and the crowd shouted back that he is.
Correct
Incorrect

Question 4 of 64
4. Question
1 pointsCategory: APTITUDEWhat is the area of the circle whose circumference is 264 cm.
Correct
Incorrect

Question 5 of 64
5. Question
1 pointsCategory: APTITUDE17 , 98 , 147 , 172 , 181 , (?)
Correct
Incorrect

Question 6 of 64
6. Question
2 pointsCategory: APTITUDEPolitical Commentator: In order for a democracy to flourish, it is essential that political and journalistic freedom of expression exist. Even if commentators voice ideas that do not support the current government, a society is strengthened by the variety of views expressed. Yet, our government continues to exercise a stranglehold on certain forms of speech. It is essential that the government loosen its control on the media. Despite the potential shortterm instability this may cause the country, it will strengthen the longterm health of the country. Which of the following expresses the conclusion of the argument?
Correct
Incorrect

Question 7 of 64
7. Question
2 pointsCategory: APTITUDEThe biologist described how vultures _______ portions of carcasses and play a crucial role in maintaining the ecological balance as _______.
Correct
Incorrect

Question 8 of 64
8. Question
2 pointsCategory: APTITUDEAmong 200 people 56% like strawberry jam, 44% like apple jam, and 40% like raspberry jam. If 30% of people like both strawberry and apple jam, what is the largest possible number of people who like raspberry jam but do not like either strawberry or apple jam?
Correct
Incorrect

Question 9 of 64
9. Question
2 pointsCategory: APTITUDEx is a positive integer divisible by 4; as x increases from 1824 to 1896, which of the following must decrease?
I. 4x² – 4x + 4
II. 10 – 1/x²
III. 4/x²Correct
Incorrect

Question 10 of 64
10. Question
2 pointsCategory: APTITUDESolution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 8 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 6 kilograms of liquid, what percent of this new solution is liquid X?
Correct
Incorrect

Question 11 of 64
11. Question
2 pointsCategory: MATHEMATICSThe final value of the transfer function is
Correct
Incorrect

Question 12 of 64
12. Question
1 pointsCategory: MATHEMATICSThe probability of the length of the time that a person speaks over phone is
Then the value of λ and probability of the person speaks more than 8 minutes are respectively _____
Correct
Incorrect

Question 13 of 64
13. Question
1 pointsCategory: MATHEMATICSThe value of ‘λ’ such that the vector function.
div f =0
Correct
Incorrect

Question 14 of 64
14. Question
1 pointsCategory: MATHEMATICSCorrect
Incorrect

Question 15 of 64
15. Question
1 pointsCategory: CHEMICAL TECHNOLOGYSteam reforming naphtha is the costliest source of getting ______ on commercial scale for manufacture of nitrogenous fertilizer.
Correct
Incorrect

Question 16 of 64
16. Question
1 pointsCategory: PROCESS CONTROLMatch listI with listII and choose correct answer from the given codes:
ListI ListII
(p) Temperature 1. Frequency response
(q) Flow 2. Pyrometer
(r) Feed forward control 3. Hot wire anemometry
(s) Ziegler Nichols 4. Disturbance measurementCorrect
Incorrect

Question 17 of 64
17. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGFor the reaction, N2 + O2 ⇌ 2NO, the equilibrium constant value at 2000ºC and 2MPa is 0.01. Initially 5 moles of N2 and 5 moles of O2 were taken for the reaction. If the equilibrium constant value is 0.0225, then number of moles of NO are present at equilibrium are ___________.
Correct
Incorrect

Question 18 of 64
18. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGFor a reaction CAo = 10 mol/m³, k = 15 hr¹(m+³/mol); and t = 3hr.
What is the reaction order if the conversion rate is 0.997?
Correct
Incorrect

Question 19 of 64
19. Question
1 pointsCategory: THERMODYNAMICSAn approximate equation for Cp (cal / g ⋅mol ⋅K) of a gas is Cp = 7 × 10³ T. Calculate the heat required (in cal) to raise the temperature of 1g mol of gas from 200ºC to o 300 ºC.
Correct
Incorrect

Question 20 of 64
20. Question
1 pointsCategory: HEAT TRANSFERCalculate the appropriate Reynolds number and state, if the flow is laminar or turbulent for the following:
Roof of a coach 6m long travelling at 100 Km/hr in airCorrect
Incorrect

Question 21 of 64
21. Question
1 pointsCategory: HEAT TRANSFERSteam is carried by a 30 m long 60 m internal diameter and 70 mm outside diameter pipe, which losses 15 kW of heat to the surrounding at 330 K. Given that heat transfer coefficient is 3.20W / m²K . Find the emissivity of the bare surface of the pipe, if pipe carries steam at 530 K.

Question 22 of 64
22. Question
1 pointsCategory: MASS TRANSFERThe values of K and DAB will have independent of direction, if
Correct
Incorrect

Question 23 of 64
23. Question
1 pointsCategory: MASS TRANSFER 
Question 24 of 64
24. Question
1 pointsCategory: MASS TRANSFERCorrect
Incorrect

Question 25 of 64
25. Question
1 pointsCategory: FLUID MECHANICSThe power required for the agitators having diameters in the ratio 1:2: 3 (Assume high Reynolds number) is

Question 26 of 64
26. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGThe two steps of first order reaction in series is given by A→R→S
Where for the first step, k1 =100 and for second step k2 = 20 . If we approximate the overall reaction as A→S with rate constant as k, then the value of k is________. 
Question 27 of 64
27. Question
1 pointsCategory: FLUID MECHANICSAir (ρair = 1.4Mg / kgm³) being heated by passing through the copper cubes of diameter 2.5 cm. The entering velocity of air is 4 m/s and the mass flow rate of air is 44 g/s. The total number of tubes required for the operation is __________________.

Question 28 of 64
28. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGFrom the given figure, find the percentage of fraction of material spending time between 20 and 25 in the reactor.

Question 29 of 64
29. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERING 
Question 30 of 64
30. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERING 
Question 31 of 64
31. Question
1 pointsCategory: CHEMICAL TECHNOLOGY 
Question 32 of 64
32. Question
1 pointsCategory: CHEMICAL TECHNOLOGYWhich of the following is correct ?
more than 1 option can be correct .
Correct
Incorrect

Question 33 of 64
33. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGPick out the wrong statement.
Correct
Hydrolysis of ester reaction is without the pressure of alkali (or) zero order reaction.
Incorrect
Hydrolysis of ester reaction is without the pressure of alkali (or) zero order reaction.

Question 34 of 64
34. Question
1 pointsCategory: CHEMICAL REACTION ENGINEERINGFollowing are some statements relating to the conductor material used in an RTD:
I. The temperature coefficient of resistance should be as small applicable.
II. Change of resistance with temperature should be a linear function
III. The element should have a repeatable resistance temperature relationship.
The correct statement is:Correct
Temperature coefficient should be high to increase sensitivity linear function ensures easy calibration.
Repeatable RT relation makes the instrument more reliable.Incorrect
Temperature coefficient should be high to increase sensitivity linear function ensures easy calibration.
Repeatable RT relation makes the instrument more reliable. 
Question 35 of 64
35. Question
2 pointsCategory: PROCESS CONTROLIn a resistance temperature detector, the temperature coefficient of the element is 0.000410 ºC¹ .What is the sensitivity of this instrument at room temperature ( ΩºC¹) ? The resistance of the material at room temperature is 500 Ω.

Question 36 of 64
36. Question
2 pointsCategory: CHEMICAL TECHNOLOGYState which of the following statement is true?
Correct
Polystyrene – thermoplastic is formed by addition; Polymerization have linear structure;
Nylon66 polyamide fibre containing amide linkages in their chains
Vulcanised rubber is elastomer {polymer chains held by Vanderwaal forces}Incorrect
Polystyrene – thermoplastic is formed by addition; Polymerization have linear structure;
Nylon66 polyamide fibre containing amide linkages in their chains
Vulcanised rubber is elastomer {polymer chains held by Vanderwaal forces} 
Question 37 of 64
37. Question
2 pointsCategory: PROCESS CONTROLProportional Controller with transfer function Kc has amplitude ratio Kc at all frequencies than the phase angle is ___________________.
Correct
Proportional Controller with transfer function Kc has amplitude ratio Kc at all frequencies than the phase angle is zero.
Incorrect
Proportional Controller with transfer function Kc has amplitude ratio Kc at all frequencies than the phase angle is zero.

Question 38 of 64
38. Question
2 pointsCategory: PROCESS CONTROLControl system is unstable if the open loop frequency and AR exceeding the unity and the frequency and the rule is called
Correct
Control system is unstable if the open loop frequency and AR exceeding the unity and the frequency and the rule is called the cross over frequency and bode stability criteria.
Incorrect
Control system is unstable if the open loop frequency and AR exceeding the unity and the frequency and the rule is called the cross over frequency and bode stability criteria.

Question 39 of 64
39. Question
2 pointsCategory: PLANT DESIGNThe annular area required for accommodating ‘N’ number of tubes for a tube pitch of P is _____ times the area required for accommodating the same ‘N’ number of tubes with tube pitch of P/u . (Assume square layout)

Question 40 of 64
40. Question
2 pointsCategory: CHEMICAL REACTION ENGINEERINGThe homogeneous reaction A + B→C is conducted in a CSTR with the addition of 1.25 KJ/(mol of A) and heat at 600K. The relevant specific heats and enthalpy change of the reaction are given by
If the mole fraction of A in the feed is 0.8 and the feed is available at 300K, then percentage of the conversion of A in the CSTR is ________________.upto 1 decimal place 
Question 41 of 64
41. Question
2 pointsCategory: THERMODYNAMICS 
Question 42 of 64
42. Question
2 pointsCategory: MASS TRANSFERWhat is the relative volatility of mixtures of two components, whose saturation pressures are in the ratio of 2: 3 and activity coefficients are in the ratio of 8: 5? upto 2 decimal places

Question 43 of 64
43. Question
2 pointsCategory: CHEMICAL REACTION ENGINEERINGIn an aqueous solution, reaction P→Q occurs under isothermal conditions following first order kinetics. The feed rate is 500 cm³ / min and concentration of P in the feed is 1.5 × 10^4 mol.cm³ .The 5 litre CSTR is replaced by five CSTRS is in series. If the capacity of each new CSTR is 1 litre, then the overall conversion in % is ________________.

Question 44 of 64
44. Question
2 pointsCategory: THERMODYNAMICSIn a method gauge, the volume of the bulbs and capillary is 0.01 m³ . The radius of the capillary is 0.5 mm. The height of the gas in the capillary is 50mm when a pressure is applied. The value of the applied pressure (μm) is ______________.
Correct
Incorrect

Question 45 of 64
45. Question
2 pointsCategory: MATHEMATICSmore than 1 option can be correct

Question 46 of 64
46. Question
2 pointsCategory: FLUID MECHANICSAir of density 1 kg/m³ and its velocity measured using Pitot tube, and its reading is 13.7 mm H2O Compute the velocity of the air stream (in m/sec) where Coefficient of the Pitot tube is 0.98. answer in nearest integer

Question 47 of 64
47. Question
2 pointsCategory: FLUID MECHANICSA drainage pump has tapered section pipe and discharge water out of a sump. The diameter of pipe at the inlet and at the upper end is 0.5 m and 0.25 m. The free water surface in the sump is 2 m above the center of inlet and the pipe is laid at a slope of 1 (vertical) to 5 (along pipe line). The pressure at the top end of the pipe is 6.6m (abs) and it is known that the loss of head due to friction between the two sections is 1/10 of the velocity head at the top section. Take atmospheric pressure as 10m and find the discharge in m³/sec through the pipe. Take its length as 25 m.

Question 48 of 64
48. Question
2 pointsCategory: FLUID MECHANICSThe weight density of ocean water follows the following relation pressure at the sea level is 10 Pa, then the pressure at a depth of 10 m is ______ Pa.

Question 49 of 64
49. Question
2 pointsCategory: HEAT TRANSFERA horizontals pipe 30.5cm in diameter is maintained at a temperature of 250ºC in a room where the ambient air is at 20ºC. Determine the free convection heat transfer per meter length of the pipe per hour (in kJ / hr ) . Take properties at mean temperature at 135ºC as
Hint
nussult number is function of grashoff number and prandtl number
use above equation to find h

Question 50 of 64
50. Question
2 pointsCategory: HEAT TRANSFER 
Question 51 of 64
51. Question
2 pointsCategory: MASS TRANSFERFor two similar systems, if the same liquid used in an absorber is decreased, then the tower height will
Correct
Incorrect

Question 52 of 64
52. Question
2 pointsCategory: HEAT TRANSFERThe convection heat transfer coefficient between a surface at 45°C and ambient air at 20°C is 40 W / m² K. Calculate the heatflux leaving the surface by convection in W/ m² .

Question 53 of 64
53. Question
2 pointsCategory: HEAT TRANSFERThe wave length at which intensity of radiation emitted by a black body is 0.6μm. Calculate the emissive power of that body.

Question 54 of 64
54. Question
2 pointsCategory: THERMODYNAMICSAn ideal monatomic gas is taken round the cycle ABCDA as shown below in the PV diagram. Work done during the cycle is given b
Correct
Since the work is given by pdV, whenever V is a constant in a process, dV is always zero and the work is also zero along that path in the pV diagram.
The net work done by the gas in the cyclic process ABCDA, found from equation is
Wtotal = WAB + WBC + WCD + WDA (19.6)
Wtotal = pA(VB VA) + 0 + pD(VA VB) + 0
Wtotal = ( pA pD)(VB VA)
W=(PP)(VV)
W=0Incorrect
Since the work is given by pdV, whenever V is a constant in a process, dV is always zero and the work is also zero along that path in the pV diagram.
The net work done by the gas in the cyclic process ABCDA, found from equation is
Wtotal = WAB + WBC + WCD + WDA (19.6)
Wtotal = pA(VB VA) + 0 + pD(VA VB) + 0
Wtotal = ( pA pD)(VB VA)
W=(PP)(VV)
W=0 
Question 55 of 64
55. Question
2 pointsCategory: HEAT TRANSFERThe pressure in the vapour space of the last effect in a multiple effect evaporation unit corresponds to 350mm Hg. What is the absolute pressure in 2 kN/m² , if g = 9.81m / sec² and density of Hg = 13.6g / cm³ ? (At the temperature existing in the vapour space)
Correct
Incorrect

Question 56 of 64
56. Question
2 pointsCategory: CHEMICAL REACTION ENGINEERINGIn an aqueous solution, reaction P→Q occurs under isothermal conditions following first order kinetics. The feed rate is 500cm³ / min and concentration of P in the feed is 1.5 × 10^4 molcm³ . The reaction is carried out in a 5 litre CSTR. At steady state 60% conversion is observed. The rate constant is [in min1] is ______________.

Question 57 of 64
57. Question
2 pointsCategory: THERMODYNAMICSA mass 1.5 kg of air is compressed in a quasistatic process from 0.1 to 0.7 MPa for which PV = constant. The initial density of air is 1.16 Kg/m3. Find the work done in kJ by the piston to compress the air.

Question 58 of 64
58. Question
1 pointsCorrect
Incorrect

Question 59 of 64
59. Question
1 pointsCorrect
Incorrect

Question 60 of 64
60. Question
1 pointsCorrect
Incorrect

Question 61 of 64
61. Question
1 pointsCorrect
Incorrect

Question 62 of 64
62. Question
1 pointsCalculate dryness fraction of steam which has 1.25 kg of water in suspension with 40 kg of steam. ___________________
Correct
Incorrect

Question 63 of 64
63. Question
1 pointsCorrect
Pressure is a scalar quantity and the magnitude remains the same in all the direction irrespective of dimensions of the container.
Incorrect
Pressure is a scalar quantity and the magnitude remains the same in all the direction irrespective of dimensions of the container.

Question 64 of 64
64. 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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