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Purification of colloida..



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Q1. The nature of the crystallization process is governed by _____________

(a) Thermodynamics
(b) Kinetic factors
(c) Thermodynamics and Kinetic factors
(d) None of the mentioned

Q2. Crystal phases can be inter-converted by varying ____________

(a) Temperature
(b) Pressure
(c) Size
(d) Viscosity

Q3. The solution which is obtained after filtration is ____________

(a) Suspended solution
(b) Clear solution
(c) Colloidal solution
(d) None of the mentioned

Q4. Insoluble impurities from solution during crystallization are removed by ____________

(a) Drying
(b) Filtration
(c) Heating
(d) Cooling

Q5. The solution of impure compound and solvent is concentrated to get ____________

(a) Unsaturated solution
(b) Undersaturaed solution
(c) Saturated solution
(d) Oversaturated solution

Q6. Which of the following is known as mother liquor?

(a) Solvent
(b) Solute
(c) Solution
(d) Filtrate

Q7. At room temperature, the impure compound in crystallisation is ____________

(a) Soluble
(b) Sparingly soluble
(c) Insoluble
(d) None of the mentioned

Q8. Which of the following is the example of crystallisation process?

(a) Purification of alum
(b) Purification of sea water
(c) Separation of gases from air
(d) None of the mentioned

Q9. Crystallisation is based on the ____________

(a) Difference in melting point
(b) Difference in boiling point
(c) Difference in pressure
(d) Difference in solubility

Q10. Which of the following is not a common method used for purification?

(a) Sublimation
(b) Crystallisation
(c) Electrolysis
(d) Chromatography


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In The Adsorption Of A Gas On Solid, Freundlich Isotherm Is Obeyed. The Slope Of The Plot Is Zero. Then The Extent Of Adsorption Is

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Emma
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