Description : For continuous drying of granular or crystalline material, the dryer used is the __________ dryer. (A) Tunnel (B) Tray (C) Rotary (D) None of these
Last Answer : (C) Rotary
Description : Which is the controlling factor for a drum drier? (A) Diffusion (B) Heat transfer
Last Answer : (B) Heat transfer
Description : Free flowing granular materials can be best dried in a __________ drier. (A) Rotary (B) Cylinder (C) Drum (D) Freeze
Last Answer : (A) Rotary
Description : Write the applications of spray drier.
Last Answer : Spray drier can be used for drying of: 1) Any substance in solution or suspension 2) Thermolabile substances, 3) Extracts, gelatin citric acid, 4) Soaps and detergents also can be dried using spray drier.
Description : Refractory bricks are usually dried in a __________ dryer. (A) Tray (B) Tunnel (C) Conveyor (D) Festoon
Last Answer : (B) Tunnel
Description : Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer. (A) Rotary (B) Vacuum (C) Tunnel (D) Tray
Description : Drying of refractory is normally carried out in a __________ dryer. (A) Open pan (B) Tray (C) Rotary vacuum (D) Truck/tunnel
Last Answer : (D) Truck/tunnel
Description : Which of the following equipments is not used for gas dispersion? (A) Agitated vessels (B) Bubble cap tray towers (C) Perforated sieve tray towers (D) Spray towers
Last Answer : (D) Spray towers
Description : . __________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction. (A) Packed (B) Bubble (C) Spray (D) Tray
Last Answer : (B) Bubble
Description : Milk is dried usually in a __________ dryer. (A) Freeze (B) Spray (C) Tray (D) Rotary
Last Answer : (B) Spray
Description : Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer. (A) Indirect tray (B) Spray (C) Freeze (D) None of these
Last Answer : (C) Freeze
Description : When a high liquid hold up is required in a reactor for gas liquid reaction, use __________ column. (A) Packed (B) Spray (C) Tray (D) Bubble
Last Answer : (D) Bubble
Description : The most common drying method is ____ drying. a. freeze- c. spray b. sun or tray drying d. oven
Last Answer : c. spray
Description : A slurry is to be dried to produce flaky solid. Which dryer would you recommend? (A) Spray dryer (B) Drum dryer (C) Rotary dryer (D) Dielectric drye
Last Answer : (A) Spray dryer
Description : Vacuum is applied in __________ zone, in case of a general type continuous rotary drum vacuum filter. (A) Filtering (B) Washing (C) Drying (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Pick out the wrong statement pertaining to the rotary dryer. (A) Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of ... D) Recommended peripheral speed of a rotary drier is in the range of 10 to 30 metres/minute
Last Answer : (C) Rotary dryer is suitable for drying sticky materia
Description : Which of the following is not a batch drier? (A) Truck drier (B) Agitated pan drier (C) Fluidised bed drier (D) Vacuum shelf drier
Last Answer : (C) Fluidised bed drier
Description : Washer and drier - front or top load?
Last Answer : I personally prefer top loaders. I have had multiples of each. While the front-loading one was better on the clothes and used less water they broke down a lot. It seemed like something would ... really had any problems with even the cheapest of top loaders. Your local laundromat will agree with me.
Description : Why do some bathroom appliances (hair drier, electric ravors, ect) have those buttons on the plug?
Last Answer : Appliance Leakage Circuit Interrupter to prevent accidental electrocution. It renders the device inoperable in certain abnormal circumstances, like say, immersion in water.
Description : I 'm getting dry day by day I am a 21 year old boy. I have been masturbating for about 4-5 years. But I noticed that one morning at the beginning of 2018, I suddenly woke up. I can't find the ... , this problem still exists in me. My body is getting much drier than before. Tell me what to do now ??
Last Answer : : You should give up masturbation altogether. You should also give up pornography , pornographic stories (chati) etc. These are just as physically damaging as they are emotionally damaging. In ... and Adequate amount of blood circulation in the body will eliminate the physical problems. Insha Allah
Description : Want to make thin body fat ? I am 23 years old . But a thin, dry and unhealthy body compared to my age. There is no one in the varsity class who is 2nd drier than me . But I do not mourn any disease. In this case, would you seek the help of a specialist ?
Last Answer : You need to eat enough nutritious food. Such as: Vitamins , sugars , proteins , fats, etc. should be eaten. Fish should be eaten more. You can eat Zinc, Multivit, Aristovit, Vita Gold . You can ... a factor as to why they're doing so poorly. (Take these medicines with the advice of any specialist)
Description : Can you put a silk duvet in the drier?
Last Answer : No, It is not recommended to put a silk duvet in the dryer which will most likely burn the fabric. They are usually from what I've found to be dry-clean only.
Description : Is there a way to vent a drier inside safely?
Last Answer : There are a couple ways to vent a dryer, my personal favorite is the dryer vent vacuum. They also have dryer vent hoods, and kits available for installation that will increase the effectiveness of your dryer.
Description : During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than ... (c) hills do not form barriers for winds (d) the area is far away from the sea
Last Answer : Ans: (a)
Description : The most important constituent of varnish, is (A) Drier (B) Solvent (C) Resin (D) All the above
Last Answer : Answer: Option D
Description : Linseed oil is used in paints as (A) Thinner (B) Vehicle (C) Base (D) Drier
Description : Turpentine oil is used in paints as (A) Thinner (B) Vehicle (C) Base (D) Drier
Last Answer : Answer: Option A
Description : Linseed oil is used in Paints as a a) Vehicle b) Base c) Drier* d) Thinner
Last Answer : c) Drier*
Description : Give principle, working and use of fluidized bed drier.
Last Answer : Principle: If a gas is allowed to flow upward through a bed of solid particle at a velocity greater than the settling velocity of the particle, particle partially suspended in the gas stream. The ... process for tablet preparation It is used in coating. Used for drying of filter cake.
Description : When a multistage tray tower uses a minimum reflux ratio, it implies (A) Infinite trays and maximum reboiler heat load (B) Infinite trays and minimum reboiler heat load (C) Minimum trays and minimum reboiler heat load (D) Minimum trays and maximum reboiler heat load
Last Answer : (A) Infinite trays and maximum reboiler heat load
Description : Sticky material can be dried in a __________ dryer. (A) Tray (B) Rotary (C) Fluidised bed (D) None of these
Last Answer : (A) Tray
Description : In extractive distillation, solvent is (A) Added to alter the relative volatility of the mixture (B) Of high volatility (C) Present in overhead stream (D) Of high viscosity to give high tray efficiency
Last Answer : (A) Added to alter the relative volatility of the mixture
Description : Flooding results in (A) High tray efficiency (B) Low tray efficiency (C) High gas velocity (D) Good contact between the fluids
Last Answer : (B) Low tray efficiency
Description : Entrainer used in Azeotropic distillation should (A) Form a low boiling azeotrope with one of the constituents of the mixture (B) Form a new azeotrope of low relative volatility with one of the ... (C) Have high latent heat of vaporisation (D) Have high viscosity to provide high tray efficiency
Last Answer : (A) Form a low boiling azeotrope with one of the constituents of the mixture
Description : Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant. (A) Agitated vessel (B) Sieve tray column (C) Bubble cap column (D) Packed tower
Last Answer : (A) Agitated vessel
Description : Small dia distillation column can be a (A) Packed column (B) Sieve tray (C) Bubble cap (D) Any of these
Last Answer : (A) Packed column
Description : Batch tray dryers suffers from the disadvantage of (A) High maintenance cost (B) Non-uniform & low production rate (C) High labour cost & low heat economy (D) All 'a', 'b' & 'c'
Last Answer : (C) High labour cost & low heat economy
Description : In distillation columns, the number of bubble caps per tray primarily depends upon the (A) Allowable liquid velocity (B) Allowable gas velocity (C) Allowable gas and liquid velocities
Last Answer : (C) Allowable gas and liquid velocities
Description : Tray spacing in a distillation column of dia 10-12 ft. used in petroleum refinery may be around __________ inches. (A) 5 (B) 30 (C) 60 (D) 100
Last Answer : (B) 30
Description : Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower. (A) Wetted wall (B) Bubble cap (C) Perforated tray (D) Packed
Last Answer : (A) Wetted wall
Description : Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer. (A) Less than (B) More than (C) Same as (D) Very much less
Last Answer : (B) More than
Description : __________ column is used in gas absorption process. (A) Wetted wall (B) Sieve/perforated tray (C) Bubble cap (D) Packed
Last Answer : (D) Packed
Description : Back-trapping in a distillation column (A) Increases tray efficiency (B) Decreases tray efficiency (C) Reduces pressure drop (D) Is desirable, as it provides improved vapour-liquid contact
Last Answer : (B) Decreases tray efficiency
Description : An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are ... (D) More number of trays are required and the residue composition is more dilute in methano
Last Answer : (A) Less number of trays are required
Description : Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty? (A) Grid tray tower (B) Perforated tray tower (C) Wetted wall tower (D) Bubble cap tower
Last Answer : (D) Bubble cap tower
Description : Weeping in a distillation column (A) Increases tray efficiency (B) Provides large interfacial surface for mass transfer (C) Results due to very high gas velocity (D) Results due to very low gas velocity
Last Answer : (D) Results due to very low gas velocity
Description : Tower diameter may be decreased by (A) Using higher reflux ratio (B) Use of increased tray spacing (C) Increasing the liquid flow rate (D) Increasing the vapour flow rate
Last Answer : (B) Use of increased tray spacing
Description : Design calculation for multiple component distillation is done by (A) Ponchon-Savarit method (B) McCabe-Thiele method (C) Enthalpy concentration method (D) Tray to tray calculations
Last Answer : (D) Tray to tray calculations
Description : To get high tray efficiency (A) Interfacial surface between liquid and gas phase should be large (B) Time of contact between the two phases should be less (C) Gas velocity should be very low (D) Liquid entrainment should be severe
Last Answer : (A) Interfacial surface between liquid and gas phase should be large
Description : Pick out the wrong statement. (A) Mechanical agitation is required, if the system has low interfacial tension (B) Sieve tray towers are generally used for systems having low ... Prandtl analogy for heat and mass transfer considers the transfer through both laminar and turbulent layers
Last Answer : (A) Mechanical agitation is required, if the system has low interfacial tension