11th Class Chemistry Chapter 15 MCQ Test with Answer

Question # 1

In distillation heating should be done.

Gently and steadily A
Vigorously B
Very fast C
With high pressure D

Question # 2

It is suspected that hand writenlegal document has been changed by over writing some crucial figures. Which technique you wil use to check the inks used at suspected places.

Distillation A
Chromatography B
Solvent extraction C
Crystallization D

Question # 3

The essential requirement for separating two liquids by simple distillation is that their boiling points shuld differ by at least

5 oC A
10 oC B
25 oC C
50 oC D

Question # 4

In paper chromatography mobile phase is

Organic liquid A
Water B
Inorganic liquid C
All of these D

Question # 5

The pore size of flter paper depends upon

Size of funnel A
Size of precipitate B
Do not depend on anything C
Nature of liquid D

Question # 6

For colored impurities in crystals, which of the followign should be used.

Filter paper A
Animal charcoal B
Gooch crucible C
Distillation D

Question # 7

In chromatography, the composeats of the mixtrue are separated based on

Their molecular mssses A
The interaction fo the components with stationalry as well as mobile phases B
The type of solvent used C
The filter paper used D

Question # 8

An ideal solvent should be.

Inepensive A
Safe B
Easy to move C
All of these D

Question # 9

In chromatogrphy, a locating agent is used to.

Dissolve the sample for separation A
Carry the separated components along the sationary phase B
make colorless separated compnents visible for identification C
Privent the sample from intercting with the sationary phase D

Question # 10

The porous material used to separate the solid from the liquid during filtratio is called the.

Filtrate A
Filter medium B
Residoue C
Solvent D

Question # 11

Filtratio is used to separate

Solids from liquiids A
Liquids from liquids B
Gases from liquids C
Solids from gases D

Question # 12

Asprin is used as

Analgesic A
Antipyretic B
Botha a and b C
None of these D

Question # 13

Petroleum is separatated by

Simpel distilation A
Fractional distillation B
Crystallization C
filtration D

Question # 14

The good insolubel preceution whihc should be used for solutions that react with paper

Filter paper A
Do not filter B
Asbestos mat C
Cannot be answered D

Question # 15

In petroleium refining fractional distillation separates fractions based on

Melting point A
Boiling point B
Density C
Viscosity D

Question # 16

Which of the following is a physical method of separation

Filtration A
Crystallazation B
Distillation C
All of these D

Question # 17

In apaper chromatography, paper should be dipped in solvent up to

5 -6 mm A
2 - 5 mm B
5-6 cm C
None of these D

Sr.#	Question	Answer
1	In chromatography, the composeats of the mixtrue are separated based on	A. Their molecular mssses B. The interaction fo the components with stationalry as well as mobile phases C. The type of solvent used D. The filter paper used
2	Which of the followign is the main purpose of sepration techniques.	A. Meixing substances B. Purifying substances C. Heating substances D. Cooling substances
3	The good insolubel preceution whihc should be used for solutions that react with paper	A. Filter paper B. Do not filter C. Asbestos mat D. Cannot be answered
4	Filtratio is used to separate	A. Solids from liquiids B. Liquids from liquids C. Gases from liquids D. Solids from gases
5	In chromatogrphy, a locating agent is used to.	A. Dissolve the sample for separation B. Carry the separated components along the sationary phase C. make colorless separated compnents visible for identification D. Privent the sample from intercting with the sationary phase
6	Evaporation can be used to separate	A. Salt from seawater B. Oil from water C. Sand from gravel D. Alcohol from water
7	The essential requirement for separating two liquids by simple distillation is that their boiling points shuld differ by at least	A. 5 oC B. 10 oC C. 25 oC D. 50 oC
8	How many arrrangements are there for paper chromatography	A. 1 B. 2 C. 3 D. 4
9	Distillation separates liquids based on differences in	A. Density B. Colour C. Boiling point D. Solubility
10	Which of the following is separaed by fractional distillation	A. Air into nitrogen and oxygen B. Salt from seawater C. Sand and iron D. Sugar from water

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11th Class Chemistry Chapter 15 MCQ Test with Answer

MCQ's Test For Basic Separation Techniques

Basic Separation Techniques

In distillation heating should be done.

It is suspected that hand writenlegal document has been changed by over writing some crucial figures. Which technique you wil use to check the inks used at suspected places.

The essential requirement for separating two liquids by simple distillation is that their boiling points shuld differ by at least

In paper chromatography mobile phase is

The pore size of flter paper depends upon

For colored impurities in crystals, which of the followign should be used.

In chromatography, the composeats of the mixtrue are separated based on

An ideal solvent should be.

In chromatogrphy, a locating agent is used to.

The porous material used to separate the solid from the liquid during filtratio is called the.

Filtratio is used to separate

Asprin is used as

Petroleum is separatated by

The good insolubel preceution whihc should be used for solutions that react with paper

In petroleium refining fractional distillation separates fractions based on

Which of the following is a physical method of separation

In apaper chromatography, paper should be dipped in solvent up to

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