MCQOPTIONS
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MCQOPTIONS
This section includes 193 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Statement 1: Boiling point rise is due to the colligative properties due to the presence of solid particles in the solvent.Statement 2: Boiling point rise is due to the increase in pressure at the bottom of the solvent due to hydro-static head of the column. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 152. |
Drain pipes are present to remove _____ |
| A. | Waste |
| B. | Urea |
| C. | Condensate |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 153. |
Statement 1: In a multiple effect evaporator, the overall temperature drop is equal to the individual drops at each step.Statement 2: In a multiple effect evaporator, the total area is equal to the sum of the individual areas. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 154. |
Which of the following is true about On-Off Control? |
| A. | On-Off valves are called Plug Cocks |
| B. | The size of the valve path is as big as the pipe itself |
| C. | Pressure drop in these is the least compared to all other valves |
| D. | All of the mentioned |
| Answer» E. | |
| 155. |
Statement 1: For rough control of flow _____ are used.Statement 2: For fine control of flow _____ are used. |
| A. | Needle valves, Globe valves |
| B. | Needle valves, Gate valves |
| C. | Globe valves, Needle valves |
| D. | Gate valves, Globe valves |
| Answer» D. Gate valves, Globe valves | |
| 156. |
Statement 1: Generally needle valves are not used for liquids.Statement 2: For a unidirectional flow, non return valves are used. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 157. |
Statement 1: When an additional connection such as a valve/ tap is to be added, _____ is used.Statement 2: Bents have more pressure drop than elbows. |
| A. | Union joint, True |
| B. | Union joint, False |
| C. | T- joint, True |
| D. | T- joint, False |
| Answer» D. T- joint, False | |
| 158. |
Which of the following is untrue about non-return valves? |
| A. | They’re also called foot valves as they’re present at the foot of centrifugal pumps to prevent priming |
| B. | They prevent flow in the opposite direction even if the pressure increases in the opposite direction |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» E. | |
| 159. |
Which of the following is true about Rotary pumps? |
| A. | These consist of gear pumps which create high pressures |
| B. | In internal gear pumps, a pinion gear is driven by a motor which is eccentric and the ring gear is co-axial and is driven by the pinion gear |
| C. | In Spur gears, vacuum created allows liquid to flow from suction to delivery line |
| D. | All of the mentioned |
| Answer» E. | |
| 160. |
Which of the following is true about Centrifugal pumps? |
| A. | It’s suitable for corrosive and toxic fluids |
| B. | It has a high pressure head |
| C. | Priming is not needed |
| D. | None of the mentioned |
| Answer» E. | |
| 161. |
Statement 1: Fans and blowers create pressure energy whereas compressors don’t.Statement 2: In food processing various liquids like milk and juices are transported by pumps |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» E. | |
| 162. |
Statement 1: Diaphragm pumps can handle corrosive material and do not have leakage problems, but, they only vibrate hence the output is low.Statement 2: Diaphragm pump is an example of _____ |
| A. | True, negative displacement pump |
| B. | True, positive displacement pump |
| C. | False, negative displacement pump |
| D. | False, positive displacement pump |
| Answer» C. False, negative displacement pump | |
| 163. |
Statement 1: Starch is _____ as its viscosity decreases with an increase in shear stress.Statement 2: Bingham plastics follow Newton’s law of viscosity at low shears. |
| A. | Bingham, False |
| B. | Dilatant, True |
| C. | Pseudo plastic, False |
| D. | Newtonian fluid, True |
| Answer» D. Newtonian fluid, True | |
| 164. |
Statement 1: Blood is a _____Statement 2: Thixotropic fluids are fluids whose viscosity decreases when subjected to shear stress initially but eventually with time, the viscosity increases. |
| A. | Newtonian fluid, False |
| B. | Rheopectic, True |
| C. | Pseudo plastic, False |
| D. | Casson plastic, True |
| Answer» E. | |
| 165. |
Statement 1: Apparent viscosity μ_a is related to shear stress (τ) and shear strain (γ) as μ_a= τ/γ.Statement 2: The equation τ=Kγⁿ becomes μ_a= τ/γ = Kγ⁽ⁿ⁻¹⁾ . |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 166. |
Statement 1: In μ_a= τ/γ = Kγ⁽ⁿ⁻¹⁾ , n = consistency index and K is the flow behaviour index.Statement 2: n= 1 for Newtonian fluids, n<1 for dilatant fluids and n>1 for pseudo plastic fluids. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 167. |
Which of the flowing is true about two-parameter model? |
| A. | It is also called as Ostwald-de Waele Model |
| B. | The equation pertaining to it is τ=Kγⁿ |
| C. | These equations pertain to Newtonian, dilatant and pseudo plastic fluids |
| D. | All of the mentioned |
| Answer» E. | |
| 168. |
Statement 1: Continuous Rotary vacuum filter press has a high labor cost.Statement 2: Continuous Rotary vacuum filter press has a high clogging. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 169. |
Cellulose was added in the pulping of certain fruit juices. What is it called? Was the decision of it being added in this process of filtration correct? |
| A. | Filter cloth, yes |
| B. | Filter aid, yes |
| C. | Filter cloth, no |
| D. | Filter aid, no |
| Answer» C. Filter cloth, no | |
| 170. |
Which of the following factor does the rate of filtration depend on? |
| A. | Compressibility factor of the filtrate |
| B. | Pressure drop |
| C. | Compressibility factor of the filtrate & Pressure drop |
| D. | Neither of the mentioned |
| Answer» D. Neither of the mentioned | |
| 171. |
Which correction of the orifice meter is corrected in the venturimeter? |
| A. | The eddies are not formed as the entrance to the downstream is not very big as compared to the vena contracta |
| B. | The throat diameter can be changed |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. The throat diameter can be changed | |
| 172. |
In a rota meter _________ force is directly proportional to _____ of the fluid. |
| A. | Buoyancy, Linear Velocity |
| B. | Gravitational, Volumetric flow rate |
| C. | Gravitational, Linear Velocity |
| D. | Buoyancy, Volumetric flow rate |
| Answer» B. Gravitational, Volumetric flow rate | |
| 173. |
Rheology of food in the food processing industry is how the food is affected when _____ is applied. |
| A. | Pressure |
| B. | Butter |
| C. | None of the mentioned |
| D. | All of the mentioned |
| Answer» B. Butter | |
| 174. |
_____ is a mechanical gadget used to prevent leaks. |
| A. | Hydrogen fitting |
| B. | Stuffing Box |
| C. | Mechanical Box |
| D. | None of the mentioned |
| Answer» C. Mechanical Box | |
| 175. |
Statement 1: Brookfield viscometer is very robust, is supported by software and even shows values of K and n, but, sometimes particles suspended in the fluid cause problems.Statement 2: Drawbacks of plate and cone viscometer: edge-effects, turbulence and temperature effects. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 176. |
In food industry, chlorine line is painted _____ and hydrogen line is painted _____ |
| A. | Yellow, black |
| B. | Green, blue |
| C. | Orange, red |
| D. | Yellow, red |
| Answer» E. | |
| 177. |
Statement 1: Evaporation is considered a mass and heat transfer operation.Statement 2: After evaporation, solids are left behind. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 178. |
Statement 1: Considering the equation, μ_a= τ/γ = Kγ⁽ⁿ⁻¹⁾ , for pseudo plastic fluids, n<1 and they’re called Shear thinning liquids and dilatant fluids are called Shear thickening liquids as n>1.Statement 2: Cooked starch solution is a Shear thinning liquid and dairy cream is a Shear thickening liquid. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 179. |
Statement 1: Brookfield viscometer is an example of Coaxial Cylinder Viscometer.Statement 2: Working principle of a Brookfield viscometer: Two coaxial cylinders. Liquid is filled in between them. The viscosity produces torque which is directly proportional to the shear stress. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» C. False, False | |
| 180. |
Which of the following is a name of an actual viscometer? |
| A. | Capillary tube |
| B. | Plate and Cone |
| C. | Coaxial Cylinder |
| D. | All of the mentioned |
| Answer» E. | |
| 181. |
The energy loss due to the friction at the walls of a pipe is called _____ |
| A. | Kinetic friction |
| B. | Skin friction |
| C. | Static friction |
| D. | None of the mentioned |
| Answer» C. Static friction | |
| 182. |
What is Kinetic Energy Factor in the Bernoulli’s equation? |
| A. | It is because friction varies |
| B. | It is because friction stays constant |
| C. | It is because the velocity in every layer varies and only the average velocity is accounted hence a correction factor is a need |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 183. |
Statement 1: Bernoulli’s equation can be applied to flow through pipes both, with and without friction.Statement 2: Air is an incompressible fluid. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» B. True, True | |
| 184. |
Statement 1: Reynolds number is the ratio of viscous force to Inertial Force.Statement 2: The thickness of Boundary layer increases with the increase in distance from the surface. |
| A. | True, False |
| B. | True, True |
| C. | False, False |
| D. | False, True |
| Answer» D. False, True | |
| 185. |
In Bernoulli’s equation, the friction correction factor is added to the LHS and the energy contributed by the pump is written on the RHS. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 186. |
IN_A_PACKAGING_OF_DRY_GRAPES,_THE_PACKAGING_MATERIAL_IS_MADE_OF_POLYETHYLENE._THE_DRY_GRAPES_HAVE_CERTAIN_MOISTURE_CONTENT._WHICH_OF_THE_FOLLOWING_IS_TRUE_WITH_RESPECT_TO_THE_DIFFUSION_OF_CERTAIN_AMOUNT_OF_MOISTURE_THROUGH_THE_PACKING??$ |
| A. | The moisture will not diffuse |
| B. | The diffusion in this case is called permeability |
| C. | None of the mentioned |
| D. | Neither of the mentioned |
| Answer» C. None of the mentioned | |
| 187. |
STATEMENT_1:_DIFFUSION_OF_GAS_COMPONENT_THROUGH_THE_RESISTIVE_FILM_TO_THE_BULK_OF_THE_LIQUID_IS_THE_RATE_DETERMINING_STEP.?$ |
| A. | |
| B. | True, False |
| C. | True, True |
| Answer» B. True, False | |
| 188. |
Ratio of equilibrium concentrations of solute A in liquid phase and gas phase i.e. CAL* and CAg* respectively is α. α is called ____?# |
| A. | Diffusion coefficient |
| B. | Distribution coefficient |
| C. | Mass transfer coefficient |
| D. | None of the mentioned |
| Answer» C. Mass transfer coefficient | |
| 189. |
Statement 1: Resistance is inversely proportional to the inter-facial area. |
| A. | |
| B. | True, False |
| C. | True, True |
| Answer» C. True, True | |
| 190. |
A phase boundary between alcohol and water exists. |
| A. | True |
| B. | False |
| Answer» C. | |
| 191. |
Statement 1: A phase boundary exists between alcohol and oxygen. |
| A. | |
| B. | True, False |
| C. | True, True |
| Answer» C. True, True | |
| 192. |
Velocity gradient is the main driving force in mass transfer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 193. |
Shifting of a pair of ripened apples from the store house to the vegetable cart is called mass transfer. |
| A. | True |
| B. | False |
| Answer» C. | |