ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

Analytical chemistry is the science of :

Chemical Characterization. A
Physical Characterization. B
Biological Characterization. C
Biochemical Characterization. D

Question # 2

A complete chemical Characterization of a compound must include:

Qualitative analysis A
Chemical analysis B
Quantitative analysis C
None of above D

Question # 3

Solvent extraction is an unstable,Process and it is controlled by:

Alcohol extraction A
Petrol extraction B
Phenol extraction C
Ether extraction D

Question # 4

The tip of funnel should be 1 or 2cm larger than the circle of the

Beaker A
Solid B
Filter paper C
Liquid D

Question # 5

Which one of the following substance is use as decolonizing agent

Asbestos A
Animal charcoal B
conc, H₂SO₄ C
Silica gel D

Question # 6

Without proper suction,filtration is:

Rapid process A
Fague process B
Slow process C
Useless process D

Question # 7

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

Butterfly paper. A
Ordinay paper. B
Flying paper. C
Filter paper. D

Question # 8

The detection of functional group is called :

Numerical analysis. A
Qualitative analysis. B
Combustion analysis. C
Quantitative analysis. D

Question # 9

Solvent extraction method is a particularly useful technique of separation when the product to be separated is:

non-volatile or thermally unstable. A
volatile or thermally stable. B
non-volatile or thermally stable. C
volatile or thermally unstable. D

Question # 10

Which one of the following substances is used to decolourizing agent

Abestos A
Animal charcoal B
conc. H2SO4 C
Silica gel D

Question # 11

The other name for distribution law is

Dispersive law A
Partition law B
Avogadro's law C
separation law D

Question # 12

The detection of functional group is called

Numerical analysis A
Qualitative analysis B
Combustion analysis C
Quantitative analysis D

Question # 13

The solid remained on filter paper during filtration is called the

Substance A
Residue B
Undue C
Filtrate D

Question # 14

A complete chemical characterization of a compound must include

Qualitative analysis A
Chemical analysis B
Quantitative analysis C
Both a and c D

Question # 15

The solution left after the formation of crystals is called :

Residue. A
Filtrate. B
Mother liquor. C
None of these. D

Question # 16

Direct conversion of solid into vapors is called :

Crystallization A
Sublimation B
Obligation C
Vaporization. D

Question # 17

A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :

Freezing point. A
Room temperature. B
Boiling point. C
Sea level temperature. D

Question # 18

The tip of the funnel should touch the side of the beaker in order to avoid

Splashing A
Leakage B
Mixing C
Contamination D

Question # 19

Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by

Modern analytical physics A
Mechanical chemistry B
Biochemistry C
Modern analytical chemistry D

Question # 20

Solvent extraction is an unstable, Process and it is called by:

The amount of solute A
Distribution law B
The amount of solvent used C
Law of mass action D

Question # 21

Estimation of Na in sea water is an example of

Numerical analysis A
Qualitative analysis B
Quantitative analysis C
None of above D

Question # 22

Estimation of Na in sea water is an example of :

Numerical analysis. A
Qualitative analysis. B
Quantitative analysis. C
None of above. D

Question # 23

In chromatography, the point at which solvent maximum rises called:

Solvent front A
Base line B
Element C
Chromatogram D

Question # 24

The tip of the funnel should touch the side of the beaker in order to avoid :

Splashing. A
Leakage. B
Mixing. C
Contamination. D

Question # 25

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 26

Direct conversion of solid intro vapours is called:

Crystallization A
Sublimation B
Obligation C
Vapourization D

Question # 27

Solvent extraction is an equilibrium process and it is controlled by :

law of mass action. A
the amount of solvent used. B
distribution law. C
the amount of solute. D

Question # 28

In CCL4 solvent I3 shows:

Blue Color A
Brown Color B
Purple Color C
Pink Color D

Question # 29

During the process of crystallization, the hot saturated solution:

is cooled very slowly to get large size crystals A
is cooled at a moderate rate to get medium sized crystals of the product B
is evaporated to get the crystals of the products C
is mixed with an immiscible liquid to get the pure crystals of the product. D

Question # 30

Proteins and amino acid can be separated by:

Filtration A
^Sublimation B
Chromatography C
Suction D

Sr.#	Question	Answer
1	In chromatography, the point at which solvent maximum rises called:	A. Solvent front B. Base line C. Element D. Chromatogram
2	The detection of functional group is called:	A. Numerical analysis B. Qualitative analysis C. Quantitative analysis D. Combustion analysis
3	Solvent extraction is an unstable,Process and it is controlled by:	A. Alcohol extraction B. Petrol extraction C. Phenol extraction D. Ether extraction
4	The detection of functional group is called :	A. Numerical analysis. B. Qualitative analysis. C. Combustion analysis. D. Quantitative analysis.
5	Proteins and amino acid can be separated by:	A. Filtration B. ^Sublimation C. Chromatography D. Suction
6	Which one of the following substances is used to decolourizing agent	A. Abestos B. Animal charcoal C. conc. H2SO4 D. Silica gel
7	A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :	A. Freezing point. B. Room temperature. C. Boiling point. D. Sea level temperature.
8	Solvent extraction is an equilibrium process and it is controlled by :	A. law of mass action. B. the amount of solvent used. C. distribution law. D. the amount of solute.
9	The tip of the funnel should touch the side of the beaker in order to avoid :	A. Splashing. B. Leakage. C. Mixing. D. Contamination.
10	A complete chemical characterization of a compound must include	A. Qualitative analysis B. Chemical analysis C. Quantitative analysis D. Both a and c

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