Duhring’s rule is important in solving problems on (A) Distillation (B) Crystallisation (C) Evaporation (D) Humidification

Duhring’s rule is important in solving problems on

(A) Distillation

(B) Crystallisation

(C) Evaporation

(D) Humidification

by

1 Answer

Answer :

(C) Evaporation

by

Related questions

Duhring's plot' is of use in (A) Extractive distillation (B) Evaporation

Description : Duhring's plot' is of use in (A) Extractive distillation (B) Evaporation

Last Answer : (B) Evaporation

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Last Answer : (C) Duhring's plot is used for calculating the concentration of solution

Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the (A) High evaporation losses of water (B) High pressure drop of the gas (C) Difficulty in its fabrication (D) None of these

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Last Answer : (B) High pressure drop of the gas

Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water. (A) Boiling point (at the same pressure) (B) Viscosity (C) Density (D) Thermal conductivity

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Last Answer : (A) Boiling point (at the same pressure)

. Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the __________ of pure water. (A) Boiling point (B) Dynamic viscosity (C) Kinematic viscosity (D) Density

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Last Answer : (D) Humidification

A 'unit process' is exemplified by the (A) Distillation (B) Hydrogenation of oils (C) Absorption (D) Humidification

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Last Answer : (B) Hydrogenation of oils

Separation of two or more components of a liquid solution cannot beachieved by (A) Fractional crystallisation (B) Liquid extraction (C) Absorption (D) Evaporation

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Last Answer : (D) Both (B) and (C)

ADDUCTS' and 'CLATHRATES' are used in case of (A) Extractive distillation (B) Crystallisation (C) Absorption (D) None of these

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Last Answer : (B) Crystallisation

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Last Answer : (B) Vacuum crystallisation

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Which of the following pair of isomers can not be separated by fractional crystallisation or fractional distillation:

Description : Which of the following pair of isomers can not be separated by fractional crystallisation or fractional distillation:

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Cooking oil can be converted into vegetable ghee by the process of 1. hydrogenation 2. distillation 3. crystallisation 4. reduction The correct processes are: (a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 3 and 4

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Camphor can easily be purified by the process of (a) Sublimation (b) Distillation (c) Crystallisation (d) Sedimentation

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Last Answer : Ans:(a)

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Last Answer : sublimation

The most important application of distribution law is in (A) Evaporation (B) Liquid extraction (C) Drying (D) Distillation

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Solvay process as compared to dual process (i.e. modified Solvay process). (A) Can use low grade brine (B) Has less corrosion problems (C) Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl(D) Both (B) and (C)

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Last Answer : (D) Both (B) and (C)

Heat sensitive materials with very high latent heat of vaporisation may be economically separated using (A) Liquid extraction (B) Distillation (C) Evaporation (D) Absorption

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Differentiate between Evaporation and Distillation and explain the working and application of simple distillation.

Description : Differentiate between Evaporation and Distillation and explain the working and application of simple distillation.

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A mixture of water and alcohol can be separated by (1) Filtration (2) Evaporation (3) Decantation (4) Distillation

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Last Answer : distillation

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Which of the following is not categorised as a "mechanical operation”? (A) Agitation (B) Filtration (C) Size enlargement (D) Humidification

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The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is (A) Natural draft cooling tower (B) Induced draft cooling tower (C) Spray chamber (D) None of these

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Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C? (A) Humidification only (B) Heating only (C) Both heating and humidification (D) Evaporative cooling

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Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is (A) Insoluble in the liquid (B) Soluble in the liquid (C) Non-ideal in nature (D) At a fixed temperature

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Glycerine is not used in the (A) Manufacture of explosive (B) Conditioning and humidification of tobacco (C) Manufacture of pharmaceuticals (D) None of these

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Evaporative cooling process employs a combination of cooling and humidification in which the (A) Sensible heat is added (B) Sensible heat is removed and the latent heat is added (C) Latent heat is removed (D) Sensible heat is added and latent heat is removed

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Where does the Bayes rule can be used? a) Solving queries b) Increasing complexity c) Decreasing complexity d) Answering probabilistic query

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Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding (A) Glycerol (B) Nitro cellulose (C) Camphor (D) None of these

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Last Answer : (B) Supersaturated

Crystallisation of solids from a homogeneous solution is a/an __________ process. (A) Exothermic (B) Mildly endothermic (C) Highly endothermic (D) None of these

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In case of a super-cooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is (A) More (B) Less (C) Same (D) More or less; depends on the nature of solution

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Last Answer : (A) More

The driving potential for the crystal growth during crystallisation is the __________ of the solution. (A) Concentration (B) Viscosity (C) Super-saturation (D) Density

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Last Answer : (C) Super-saturation

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to (A) Avoid mechanical weakening of fibre (B) Remove lignin by way of crystallisation (C) Increase the cellulose content (D) None of these

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Last Answer : (A) Avoid mechanical weakening of fibre

One of the steps during refining of cane sugar consists of addition ofhydrated lime to the sugar syrup followed by carbonation of the resultingsolution. The purpose of this step is to(A) Adjust the pH of the syrup(B) Remove the coloring matter from the syrup(C) Reduce the viscosity of the syrup(D) Improve the rate of crystallisation of sugar

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