MCQOPTIONS
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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.
| 151. |
Find the slope of the operating line from the figure below. If, Ls,Gs- non diffusing solvent X,Y- Concentrations in mole ratio x,y- concentration in mole fraction |
| A. | Ls/Gs |
| B. | –Ls/Gs |
| C. | Gs/Ls |
| D. | –Gs/Ls |
| Answer» B. –Ls/Gs | |
| 152. |
Find the concentration representation in the equilibrium distribution curve given below. |
| A. | Mole ratio |
| B. | Mass ratio |
| C. | Mole fraction |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 153. |
Relation between the slope of two operating line in the give figure. |
| A. | Equal |
| B. | Un equal |
| C. | 1>2 |
| D. | 2>1 |
| Answer» B. Un equal | |
| 154. |
Which of the following are the national standards? |
| A. | Consortia |
| B. | ISO |
| C. | ANSI |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 155. |
Which among the following are the main roots of international standard community? |
| A. | ISO |
| B. | IEC |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 156. |
Which of the following are the limitations of standards? |
| A. | The risk of using accredited standards is that they will not respond fast enough |
| B. | Standards may not address all of their needs of concerns |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 157. |
Which of the following does conformance deals with? |
| A. | Fidelity with which an implementation meets the standard |
| B. | It is an action or behavior in correspondence with current customs |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 158. |
Which of the following is is correct? |
| A. | Open systems emphasizes only on the interface specification needed to be standards |
| B. | Open systems emphasizes only on component implementation needed to properly implement those standards |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» E. | |
| 159. |
Proof stress for minimum bolt tension is : |
| A. | 0.7fub |
| B. | 0.5fub |
| C. | 0.7fyb |
| D. | 0.5fyb |
| Answer» B. 0.5fub | |
| 160. |
Tensile strength of bolt is given by |
| A. | 0.9fubAn/1.1 |
| B. | 0.9fybAn/1.1 |
| C. | 0.9fubAn/1.25 |
| D. | 0.9fybAn/1.25 |
| Answer» D. 0.9fybAn/1.25 | |
| 161. |
Nominal bearing strength of bolt is 2.5kbdtfu where kb depends on(i) end distance, (ii)pitch distance, (iii)ultimate tensile stress of bolt, (iv)shank area of bolt, (v)yield stress of bolt, (vi)diameter of hole |
| A. | i, ii, iv, v |
| B. | i, ii, iii, vi |
| C. | ii, iii, iv, v |
| D. | iii, iv, v, vi |
| Answer» C. ii, iii, iv, v | |
| 162. |
Maximum gauge length is _________ |
| A. | 100+4t, where t is thickness of thinner plate |
| B. | 100-4t, where t is thickness of thinner plate |
| C. | 4t, where t is thickness of thinner plate |
| D. | 100mm |
| Answer» B. 100-4t, where t is thickness of thinner plate | |
| 163. |
For circuit shown below Vin = 3V, R1 = 6K, R2 = 2K. The voltage V will be ________ |
| A. | 3V |
| B. | 0.75V |
| C. | 1V |
| D. | 1.134V |
| Answer» B. 0.75V | |
| 164. |
In the circuit shown in below I = 2mA, VB = 2V and R = 2K. The voltage V will be ____________ |
| A. | 2V |
| B. | 3V |
| C. | 6V |
| D. | 5V |
| Answer» B. 3V | |
| 165. |
In the circuit shown in below I = 2mA, VB = 2V and R = 2K. The voltage V will be _________ |
| A. | 2V |
| B. | -2V |
| C. | -4V |
| D. | 1V |
| Answer» C. -4V | |
| 166. |
In the circuit below Vin = 4V, R = 2K and VB = 2V. In these conditions the voltage across ideal diode V is __________ |
| A. | -4V |
| B. | -2V |
| C. | 2V |
| D. | 0V |
| Answer» E. | |
| 167. |
In the circuit Vin = 4V, VB = 3V, R = 5K. The voltage across diode V is __________ |
| A. | 1V |
| B. | 4V |
| C. | 3V |
| D. | 7V |
| Answer» B. 4V | |
| 168. |
In the circuit below VB = 2V, Vin = 5V. The voltage V across resistor R in ideal diode is __________ |
| A. | 5V |
| B. | 2V |
| C. | 3V |
| D. | 0V |
| Answer» E. | |
| 169. |
The output voltage V if Vin = 3V, R=5KΩ, VB = 2V in a ideal diode is __________ |
| A. | 1V |
| B. | 4V |
| C. | 3V |
| D. | 2V |
| Answer» D. 2V | |
| 170. |
Find current I if V = 5V and -5V when VB = 2V, R1 = 2KΩ, R2 = 4KΩ and the diode is ideal. |
| A. | 0A and 1.3mA |
| B. | 1.231mA and 0.33mA |
| C. | 3.25mA and 0A |
| D. | 1.58mA and 0A |
| Answer» D. 1.58mA and 0A | |
| 171. |
Find current I if voltage V = 5V, VB = 2V, R1 & R2 = 2K. Use ideal diode model assumption. |
| A. | 1.5mA |
| B. | 1.375mA |
| C. | 2mA |
| D. | 3mA |
| Answer» E. | |
| 172. |
Find the voltage across the resistor R if VA = -3V and VB = -5V. Use ideal diode model assumption. |
| A. | 0V |
| B. | -3V |
| C. | -5V |
| D. | -4V |
| Answer» B. -3V | |
| 173. |
A piston/cylinder contains carbon dioxide at 300 kPa, 100°C with a volume of 0.2 m^3. Weights are added at such a rate that the gas compresses according to the relation PV^1.2 = constant to a final temperature of 200°C. Determine the work done during the process. |
| A. | 70.4 kJ |
| B. | -70.4 kJ |
| C. | 80.4 kJ |
| D. | -80.4 kJ |
| Answer» E. | |
| 174. |
A piston-cylinder contains water at 3 MPa, 500°C. It is cooled in a polytropic process to 1 MPa, 200°C. Find the specific work in the process. |
| A. | 155.2 kJ |
| B. | 165.2 kJ |
| C. | 175.2 kJ |
| D. | 185.2 kJ |
| Answer» B. 165.2 kJ | |
| 175. |
R-12 in a piston-cylinder arrangement is initially at 50°C, x = 1. It is then expanded in a process so that P = Cv^(−1) to a pressure of 100 kPa. Find the work. |
| A. | 23.2 kJ/kg |
| B. | 33.2 kJ/kg |
| C. | 43.2 kJ/kg |
| D. | 53.2 kJ/kg |
| Answer» D. 53.2 kJ/kg | |
| 176. |
Consider a piston-cylinder with 0.5 kg of R-134a as saturated vapour at -10°C. It is compressed to a pressure of 500 kPa in a polytropic process with n = 1.5. Determine the work done during the process. |
| A. | -6.07 kJ |
| B. | -7.07 kJ |
| C. | -8.07 kJ |
| D. | -9.07 kJ |
| Answer» C. -8.07 kJ | |
| 177. |
A balloon behaves such that pressure inside it is proportional to the diameter squared. It contains 2kg of ammonia at 0°C, 60% quality. They are now heated so that the final pressure is 600 kPa. Find the work done in the process. |
| A. | 117.5 kJ |
| B. | 127.5 kJ |
| C. | 137.5 kJ |
| D. | 147.5 kJ |
| Answer» B. 127.5 kJ | |
| 178. |
A balloon behaves according to the equation P = (C2)V^(1/3), C2 = 100 kPa/m. The balloon is blown up with air from a volume of 1 m^3 to a volume of 3 m^3. Find the work done by the air assuming it is at 25°C. |
| A. | 219.5 kJ |
| B. | 229.5 kJ |
| C. | 239.5 kJ |
| D. | 249.5 kJ |
| Answer» E. | |
| 179. |
A gas initially at 500°C, 1 MPa is contained in a piston-cylinder arrangement with an initial volume of 0.1 m^3. It is then slowly expanded according to the relation PV = constant until a final pressure of 100 kPa is attained. Determine the work for this process. |
| A. | 200.3 kJ |
| B. | 210.3 kJ |
| C. | 220.3 kJ |
| D. | 230.3 kJ |
| Answer» E. | |
| 180. |
A piston-cylinder contains carbon dioxide at 2MPa with V=50 L. The device has a mass of 4 kg. Everything is initially at 200°C. By heat transfer the whole system cools to 25°C, at which point the gas pressure is 1.5 MPa. Find the work done. |
| A. | -10.0 kJ |
| B. | -12.0 kJ |
| C. | -14.0 kJ |
| D. | -16.0 kJ |
| Answer» D. -16.0 kJ | |
| 181. |
A cylinder/piston contains air at 100 kPa and 20°C with a V=0.3 m^3. The air is compressed to 800 kPa in a reversible polytropic process with n = 1.2, after which it is expanded back to 100 kPa in a reversible adiabatic process. Find the net work. |
| A. | -174.6 kJ/kg |
| B. | -154.6 kJ/kg |
| C. | -124.6 kJ/kg |
| D. | -194.6 kJ/kg |
| Answer» B. -154.6 kJ/kg | |
| 182. |
To estimate the size of an executable program before it is assembled and linked, the programming methodology concerned is by writing |
| A. | programs with more than one segment for data and code |
| B. | programs with FAR subroutines each of size up to 64KB |
| C. | programs with more than one segment for stack |
| D. | all of the mentioned |
| Answer» E. | |
| 183. |
The technique to estimate the size of an executable program, before it is assembled and linked is |
| A. | memory location technique |
| B. | global variable technique |
| C. | stack |
| D. | none |
| Answer» E. | |
| 184. |
For passing the parameters to procedures using the PUBLIC & EXTRN directives, it must be declared PUBLIC in the |
| A. | subroutine |
| B. | procedure |
| C. | main routine |
| D. | main routine and subroutine |
| Answer» D. main routine and subroutine | |
| 185. |
The method of defining the interrupt service routine for software is |
| A. | same as that of hardware |
| B. | difficult than hardware |
| C. | easier than software |
| D. | none of the mentioned |
| Answer» B. difficult than hardware | |
| 186. |
A Language L may not be accepted by a Turing Machine if: |
| A. | It it is recursively ennumerable |
| B. | It is recursive |
| C. | L can be ennumerated by some turing machine |
| D. | None of the mentioned |
| Answer» C. L can be ennumerated by some turing machine | |
| 187. |
State true or false:Statement: An ennumerator is a turing machine mwith extra output tape T, where symbols, once written, are never changed. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 188. |
A language L is recursively ennumerable if L=L(M) for some turing machine M.Which among the following cannot be among A, B and C? |
| A. | yes w ∈ L |
| B. | no w ∉ L |
| C. | M does not halt w ∉ L |
| D. | None of the mentioned |
| Answer» E. | |
| 189. |
A recursively ennumerable language L can be recursive if:a) L’ is recursively ennumerableb) Every possible sequence of moves of T, the TM which accept L, causes it to haltc) Both ( |
| A. | L’ is recursively ennumerableb) Every possible sequence of moves of T, the TM which accept L, causes it to haltc) Both (a) and ( |
| B. | Every possible sequence of moves of T, the TM which accept L, causes it to halt |
| C. | Both (a) and (b) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 190. |
Choose the appropriate option:Statement: If a language L is recursive, it is closed under the following operations: |
| A. | Union |
| B. | Intersection |
| C. | Complement |
| D. | All of the mentioned |
| Answer» E. | |
| 191. |
If L is a recursive language, L’ is:a) Recursiveb) Recursively Ennumerablec) Both ( |
| A. | Recursiveb) Recursively Ennumerablec) Both (a) and ( |
| B. | Recursively Ennumerable |
| C. | Both (a) and (b) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 192. |
Choose the correct option:Statement: If L1 and L2 are recursively ennumerable languages over S, then the following is/are recursively ennumerable.a) L1 U L2b) L2 ∩ L2c) Both ( |
| A. | L1 U L2b) L2 ∩ L2c) Both (a) and ( |
| B. | L2 ∩ L2 |
| C. | Both (a) and (b) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 193. |
The class of recursively ennumerable language is known as: |
| A. | Turing Class |
| B. | Recursive Languages |
| C. | Universal Languages |
| D. | RE |
| Answer» E. | |
| 194. |
What is ‘X’ and ‘Y’ in the below flow chart? |
| A. | Off-gases and NH3 |
| B. | Off-gases and carbamate urea |
| C. | NH3 and off- gases |
| D. | Carbamate urea and off- gases |
| Answer» C. NH3 and off- gases | |
| 195. |
Which raw material used for the production of urea? |
| A. | CO2+N2 |
| B. | CO2+NH3 |
| C. | NH2CONH2 |
| D. | NH3 |
| Answer» C. NH2CONH2 | |
| 196. |
In which process unconverted NH3 is absorbed? |
| A. | Stamicarbon process |
| B. | Toyo koatsu process |
| C. | Inventa process |
| D. | Hot- recycle process |
| Answer» D. Hot- recycle process | |
| 197. |
Which prevention can be taken to avoid the formation of biuret? |
| A. | Temperature > melting point |
| B. | Temperature < melting point |
| C. | Temperature > boiling point |
| D. | Temperature < boiling point |
| Answer» B. Temperature < melting point | |
| 198. |
What is the major engineering problem associated with ammonia production? |
| A. | Corrosion |
| B. | Heat recovery |
| C. | Handling deposited carbon |
| D. | Burner design |
| Answer» B. Heat recovery | |
| 199. |
In which process NH3 is compressed and returned to the autoclave? |
| A. | Inventa process |
| B. | Chemico process |
| C. | Pechiney process |
| D. | Montecatini process |
| Answer» C. Pechiney process | |
| 200. |
In which cycle NH3 and CO2 are used as raw materials? |
| A. | Claude cycle |
| B. | Wulff cycle |
| C. | Cascades cycle |
| D. | Montecatini solution recycle |
| Answer» E. | |