StudentAidUnit 15: Unit 15: Basic Separation Techniques — Mcqs
11th Class Chemistry · Unit 15: Basic Separation Techniques
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1.After the crystals are formed, they are typically separated from the mother liquor by:
2.The comparative rates at which the solutes move in paper chromatography depend on:
3.The method that can be used to separate two solid compounds with different solubilities in a solvent is:
4.It is suspected that a hand-written legal document has been changed by over writing some crucial figures. Which technique you will use to check the inks used at suspected places?
5.In chromatography, the components of the mixture are separated based on:
6.The porous material used to separate the solid from the liquid during filtration is called the:
7.The key difference between simple distillation and fractional distillation is the presence of:
8.The essential requirement for separating two liquids by simple distillation is that their boiling points should differ by at least:
Methods of analysis
9.Which of the following is a physical method of separation?
10.Which one is faster process?
Filtration
11.The pore size of filter paper depends upon:
12.Normally in filtration process, funnel used is:
13.The good insoluble precaution which should be used for solutions that react with paper.
14.Filtration is used to separate:
15.Which one is NOT an example of filtration?
16.In water treatment plants, filtration usually follows:
Crystallization
17.An ideal solvent should be.
18.For colored impurities in crystals, which of the following should be used?
19.Evaporation can be used to separate:
20.In crystallization, the crystals form due to:
Distillation Process
21.Petroleum is separated by:
22.Boiling point of Ethyl Alcohol is:
23.Which separation technique uses differences in boiling points?
24.Distillation separates liquids based on differences in:
25.Which apparatus part condenses vapour back to liquid in distillation?
26.Which of the following is separated by fractional distillation?
27.In petroleum refining, fractional distillation separates fractions based on:
28.In distillation, heating should be done:
Chromatography
29.In paper chromatography mobile phase is:
30.How many arrangements are there for paper chromatography?
31.Which what man's chromatographic paper is used for paper chromatography?
32.In paper chromatography, paper should be dipped in solvent up to:
33.In paper chromatography Amino Acids can be located by:
34.In chromatography, a locating agent is used to:
35.Paper chromatography is often used to separate:
Purity of product
36.In paper chromatography, the stationary phase is:
37.The mobile phase in paper chromatography is:
38.Rf value in chromatography is:
39.Which of the following can be used to check the purity of a substance?
40.Melting point of Aspirin is:
41.The formula of Salicylic Acid is:
42.Aspirin is used as:
43.Which of the following is the main purpose of separation techniques?