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MCQOPTIONS
This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 2051. |
Determine the corrections or otherwise of the following assertion [A] and reason [R]:Assertion [A]: Most of the wings are using cambered airfoils.Reason[R]: Cambered airfoils can produce positive lift at 0° AOA. |
| A. | Both [A] and [R] are true and [R] is the correct reason for [A] |
| B. | Both [A] and [R] are true but [R] is not the correct reason for [A] |
| C. | [A] is true but [R] is false |
| D. | [A] is false but [R] is true |
| Answer» B. Both [A] and [R] are true but [R] is not the correct reason for [A] | |
| 2052. |
A NACA 22104 airfoil is operating at AOA = 3°. The lift-coefficient at this AOA is 0.15. Determine the value of angle of attack at designed lift co-efficient. |
| A. | 4.36° |
| B. | 4.36rad |
| C. | 0.05 rad |
| D. | 0.05° |
| Answer» B. 4.36rad | |
| 2053. |
An airfoil is operated with flow velocity such that the pressure on upper and lower surface are 30 Pa and 15 Pa respectively. If chord is 1m then, what will be the lift produced by this airfoil? |
| A. | 15N |
| B. | 15KN |
| C. | 25N |
| D. | 30 Pa |
| Answer» B. 15KN | |
| 2054. |
The maximum lift co-efficient for NACA 19584 (chord=2.5m) airfoil is____ |
| A. | 0.15 |
| B. | 0.315 |
| C. | 0.15N |
| D. | 0.3N |
| Answer» B. 0.315 | |
| 2055. |
What will be the location of maximum camber for NACA 13250 with chord length of 2m? |
| A. | 0.32m from leading edge |
| B. | 0.32 from trailing edge |
| C. | 0.32m from trailing edge |
| D. | 0.32 from leading edge |
| Answer» B. 0.32 from trailing edge | |
| 2056. |
Let’s consider we need to design supersonic aircraft then, which type of airfoil should be adopted? |
| A. | Supersonic airfoil |
| B. | Symmetric airfoil |
| C. | Bluff shape |
| D. | Thicker airfoil |
| Answer» B. Symmetric airfoil | |
| 2057. |
An airfoil is such that the drag produced by airfoil is 25N. Airfoil has chord of 2m and is experiencing dynamic pressure of 10Pa. Find the value of drag co-efficient for airfoil. |
| A. | 1.25 |
| B. | 1.6 |
| C. | 2.5 |
| D. | 2.51 |
| Answer» B. 1.6 | |
| 2058. |
A cambered airfoil is operating with 200N of lift. The velocity of the flow is 500m/s. Determine lift-induced drag by this camber airfoil. |
| A. | 0N |
| B. | 0 |
| C. | 0.5 |
| D. | 0.5 |
| Answer» B. 0 | |
| 2059. |
Laminar bucket is region where ____ |
| A. | flow remains laminar |
| B. | turbulent is produced |
| C. | drag increases drastically |
| D. | lift is reduced drastically |
| Answer» B. turbulent is produced | |
| 2060. |
What do you mean by double cambered airfoil? |
| A. | Airfoil with flat lower surface |
| B. | Airfoil with flat upper and lower surface |
| C. | Airfoil with curved upper and lower surface |
| D. | Only upper surface is curved |
| Answer» D. Only upper surface is curved | |
| 2061. |
Pressure on the upper surface is _________ |
| A. | lower than lower surface |
| B. | higher than lower surface |
| C. | always 30.25 times lower surface |
| D. | always same |
| Answer» B. higher than lower surface | |
| 2062. |
Interface used to resolve text messages. |
| A. | Message |
| B. | Message_Source |
| C. | Language |
| D. | MessageSource |
| Answer» E. | |
| 2063. |
Parameter which can change user’s locale by any URL. |
| A. | locale |
| B. | languageURL |
| C. | language |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2064. |
LocaleChangeInterceptor can only detect the parameter for the handler mappings that enable it. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2065. |
Property of LocaleChangeInterceptor used to customize parameter name. |
| A. | localeResolver.setLocale |
| B. | paramName |
| C. | locale.parm |
| D. | none of the mentioned |
| Answer» C. locale.parm | |
| 2066. |
Method used to change user’s locale. |
| A. | set |
| B. | setLocale |
| C. | locale |
| D. | set_locale |
| Answer» C. locale | |
| 2067. |
Interface implemented by locale resolver. |
| A. | localeResolver |
| B. | tiles |
| C. | front controller |
| D. | none of the mentioned |
| Answer» B. tiles | |
| 2068. |
For a function given by F = 4x i + 7y j +z k, the divergence theorem evaluates to which of the values given, if the surface considered is a cone of radius 1/2π m and height 4π2 m. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 2069. |
If a function is described by F = (3x + z, y2 − sin x2z, xz + yex5), then the divergence theorem value in the region 0 |
| A. | 13 |
| B. | 26 |
| C. | 39 |
| D. | 51 |
| Answer» D. 51 | |
| 2070. |
The divergence theorem value for the function x2 + y2 + z2 at a distance of one unit from the origin is |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 2071. |
Evaluate the surface integral ∫∫ (3x i + 2y j). dS, where S is the sphere given by x2 + y2 + z2 = 9. |
| A. | 120π |
| B. | 180π |
| C. | 240π |
| D. | 300π |
| Answer» C. 240π | |
| 2072. |
Bio-remediation can be used at the sites contaminated with petroleum hydrocarbons. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2073. |
In Soil slurry reactor, the slurry is thickened and dewatered using __________ |
| A. | Clarifiers |
| B. | Biosparging |
| C. | Bio-accumulation |
| D. | Bio-degradation |
| Answer» B. Biosparging | |
| 2074. |
To increase the speed and efficiency of Soil banking method ___________ is used. |
| A. | Engineered biopiling |
| B. | Soil slurry bioreactors |
| C. | Land farming |
| D. | Bio-sparging |
| Answer» B. Soil slurry bioreactors | |
| 2075. |
Soil banking technique is usually faster than Land farming. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2076. |
The (17291728)th derivative of f(x) = (x2 + 1)tan-1 (x) at x = 0 is |
| A. | 0 |
| B. | 1729 |
| C. | 1728 |
| D. | ∞view answer |
| Answer» B. 1729 | |
| 2077. |
The (1071729)th derivative of f(x) = (x6 + x4 + x2) cosh(x) at x = 0 is given by |
| A. | 0 |
| B. | 1071 |
| C. | 1729 |
| D. | ∞view answer |
| Answer» B. 1071 | |
| 2078. |
The 7th derivative of f(x) = (x3 + x2 + x + 1) sinh(x) at x = 0 is given by |
| A. | 43 |
| B. | 7 |
| C. | 0 |
| D. | 34view answer |
| Answer» B. 7 | |
| 2079. |
Let f(x) = (x2 + x + 1)sinh(x) the (1097)th derivative at x = 0 is |
| A. | 1097 |
| B. | 1096 |
| C. | 0 |
| D. | 1202313view answer |
| Answer» E. | |
| 2080. |
The third derivative of f(x) = cos(x)sinh(x) ⁄ x at x = 0 is |
| A. | 0 |
| B. | π⁄32 |
| C. | (π)2 |
| D. | cos(1)sinh(1)view answer |
| Answer» B. π⁄32 | |
| 2081. |
The fourth derivative of f(x) = sin(x)sinh(x) ⁄ x at x = 0 is given by |
| A. | 0 |
| B. | π⁄2 |
| C. | 45 |
| D. | 4view answer |
| Answer» B. π⁄2 | |
| 2082. |
Let f(x) = \(\sqrt{sin(x)}\) and let yn denote the nth derivative of f(x) at x = 0 then the value of the expression 12y(5) y(1) + 30 y(4) y(2) + 20 (y(3))2 is given by |
| A. | 0 |
| B. | 655 |
| C. | 999 |
| D. | 1729view answer |
| Answer» B. 655 | |
| 2083. |
Let f(x) = eex assuming all the nth derivatives at x =0 to be 1 the value of the (n + 1)th derivative can be written as |
| A. | e – 1 + 2n |
| B. | 0 |
| C. | 1 |
| D. | Noneview answer |
| Answer» B. 0 | |
| 2084. |
Let f(x) = ex sin(x2) ⁄ x Then the value of the fifth derivative at x = 0 is given by |
| A. | 25 |
| B. | 21 |
| C. | 0 |
| D. | 5view answer |
| Answer» C. 0 | |
| 2085. |
A barometer has liquid-1 with density 1 Kg/m3 and height 10 cm below the outside level above that a liquid-2, if the gauge pressure of gas is 0.5 Pa, what is the pressure liquid-2? |
| A. | 0.5 Pa |
| B. | 1 Pa |
| C. | 1.5 Pa |
| D. | 2 PaView answer |
| Answer» B. 1 Pa | |
| 2086. |
A barometer has liquid-1 with density 5 Kg/m3 and height 10 cm below the outside level above that there is liquid-2 of length 5 cm, if the gauge pressure of the gas is 1 Pa, what is the density of liquid-2? |
| A. | 2 Kg/m3 |
| B. | 4 Kg/m3 |
| C. | 6 Kg/m3 |
| D. | 8 Kg/m3View answer |
| Answer» E. | |
| 2087. |
A barometer the liquid-1 with density 2 Kg/m3 and height 5 cm below the outside level and above that liquid-2 with density 0.5 Kg/m3 and length 10 cm, what is the gauge pressure of the gas? |
| A. | 0.01 Pa |
| B. | 0.05 Pa |
| C. | 0.1 Pa |
| D. | 0.5 PaView answer |
| Answer» E. | |
| 2088. |
A barometer has liquid with density 1 Kg/m3, and the gas has pressure 0.5 atm, what is the height of liquid level? |
| A. | 0.01 atm-m2-s2/kg |
| B. | 0.05 atm-m2-s2/kg |
| C. | 0.1 atm-m2-s2/kg |
| D. | 0.5 atm-m2-s2/kgView answer |
| Answer» C. 0.1 atm-m2-s2/kg | |
| 2089. |
A barometer has liquid of density 1 kg/m3 of level 5 cm below the outside level, what is the pressure of the gas captured inside? |
| A. | 0.5 atm + 1 Pa |
| B. | 1 atm + 0.5 Pa |
| C. | 1.5 atm + 1 Pa |
| D. | 2 atm + 0.5 PaView answer |
| Answer» C. 1.5 atm + 1 Pa | |
| 2090. |
A barometer has liquid level 10 cm above the outside level and the gas captured inside has the pressure of 0.5 atm, what is the density of liquid? |
| A. | 0.5 atm-s2/m2 |
| B. | 1 atm-s2/m2 |
| C. | 1.5 atm-s2/m2 |
| D. | 2 atm-s2/m2View answer |
| Answer» B. 1 atm-s2/m2 | |
| 2091. |
A closed manometer is filled with 3 fluids first on the left leg with density 8 kg/m3 and length 10 cm, middle one with density 10 kg/m3 and height difference 5 cm more on right leg and the third on the right leg with density 15 kg/m3, what is the length of the third liquid? |
| A. | 1 cm |
| B. | 2 cm |
| C. | 3 cm |
| D. | 4 cmView answer |
| Answer» C. 3 cm | |
| 2092. |
A closed U-tube manometer has a gas on one end with pressure 5 Pa and other end has vacuum, what is the approximate height difference of the liquid if the density of liquid is 10 Kg/m3? |
| A. | 5 mm |
| B. | 10 mm |
| C. | 50 mm |
| D. | 100 mmView answer |
| Answer» D. 100 mmView answer | |
| 2093. |
Which of the following is used for the pressure measurement of only liquid? |
| A. | Manometer |
| B. | Piezometer |
| C. | Differential Manometer |
| D. | None of the mentionedView answer |
| Answer» C. Differential Manometer | |
| 2094. |
The miniature details for the preliminary survey can be can be worked out with the help of contour maps, computer aids and ______ |
| A. | photogrammetric plotted sheets |
| B. | satellite images |
| C. | aerial photographs |
| D. | auto level |
| Answer» B. satellite images | |
| 2095. |
For which areas satellite imagery is most useful in the initial stages of planning? |
| A. | Where support data and existing map coverage are inadequate |
| B. | Where map coverage is insufficient and field evaluation is difficult |
| C. | Area with Insufficient support data and difficult field evaluation |
| D. | Area with Inadequate support data, existing map coverage and difficult field evaluation |
| Answer» E. | |
| 2096. |
Using satellite imagery multiple corridors can be marked. After this the corridor that satisfies all the surveying criteria can be chosen. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2097. |
Which organization provides the maps for satellite imagery? |
| A. | DROD |
| B. | ISRO |
| C. | BARC |
| D. | NHAI |
| Answer» C. BARC | |
| 2098. |
What are the properties of primary hydrogenation products? |
| A. | High boiling oil |
| B. | Heavy oils |
| C. | Lighter oils |
| D. | All of the mentioned |
| Answer» E. | |
| 2099. |
Hydrogenation of coal is not a sensitive reaction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2100. |
Which of the following line skips the first 5 documents in the bios collection and returns all remaining documents? |
| A. | db.bios.find().limit( 5 ) |
| B. | db.bios.find().skip( 1 ) |
| C. | db.bios.find().skip( 5 ) |
| D. | db.bios.find().sort( 5 ) |
| Answer» D. db.bios.find().sort( 5 ) | |