ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

The solution left after the formation of crystals is called :

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

Question # 2

The liquid obtained after passing the mixture through filter paper is termed as:

Extract A
Residue B
Filtrate C
Sample D

Question # 3

95% ethanol is called :

Rectified ether. A
Diesel. B
Rectified spirit. C
Petrol. D

Question # 4

95% ethanol is called:

Rectified other A
Diesel B
Rectified spirit C
Petrol D

Question # 5

The other name for distribution law is

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

Question # 6

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 # 7

Sintered glass is porous material used for:

Absorption A
Decoration B
Filtration C
All of above D

Question # 8

Chromatography is derived from Greek word 'Khromatos' means:

Type writting A
Printing B
Color writing C
Writing D

Question # 9

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 # 10

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 # 11

The solid remained on filter paper during the filtration is called the :

Substance. A
Residue. B
Undue. C
Filtrate. D

Question # 12

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

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

Question # 13

A complete chemical characterization of a compound must include

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

Question # 14

Estimation of Na in sea water is an example of :

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

Question # 15

The sample being analyzed is called

Electrolyte A
Substance B
Analyte C
All of above D

Question # 16

A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:

If the paper covers the funnel up to its circumstances A
If the paper has got small sized pores in B
If the stem of funnel is large so that it dips in to filtrate C
If the paper fits tightly. D

Question # 17

Fluted filter paper is used to:

Decrease rate of filtration A
Increase rate of filtration B
Maintain rate of filtration C
None of above D

Question # 18

The sample being analyzed is called :

Electrolyte. A
Substance. B
Analyte. C
All of above. D

Question # 19

The sample being analyzed is called:

Electrolyte A
Residue B
Undue C
Filtrate D

Question # 20

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 # 21

Selection of filter paper depends upon sizes of particles to be :

Tested. A
Filtered. B
Checked. C
All of above. D

Question # 22

Naphthalene, iodine and NH_{4 can :}

Sublime. A
Both (a) and (c). B
Crystallize. C
None of above. D

Question # 23

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 # 24

Direct conversion of solid intro vapours is called:

Crystallization A
Sublimation B
Obligation C
Vapourization D

Question # 25

A complete chemical Characterization of a compound must include:

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

Question # 26

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 27

Without proper suction,filtration is:

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

Question # 28

Which one of the following substances is used to decolourizing agent

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

Question # 29

The filtration process is used to separate solid from

Liquid A
Gas B
Solid C
All of above D

Question # 30

Analytical chemistry is the science of

Chemical characterization A
Physical characterization B
Biological characterization C
Biochemical characterization D

Sr.#	Question	Answer
1	Sintered glass is porous material used for:	A. Absorption B. Decoration C. Filtration D. All of above
2	Estimation of Na in sea water is an example of :	A. Numerical analysis. B. Qualitative analysis. C. Quantitative analysis. D. None of above.
3	Solvent extraction is an unstable, Process and it is called by:	A. The amount of solute B. Distribution law C. The amount of solvent used D. Law of mass action
4	The tip of the funnel should touch the side of the beaker in order to avoid :	A. Splashing. B. Leakage. C. Mixing. D. Contamination.
5	The tip of funnel should be 1 or 2cm larger than the circle of the	A. Beaker B. Solid C. Filter paper D. Liquid
6	Solvent extraction method is a particularly useful technique of separation when the product to be separated is:	A. non-volatile or thermally unstable. B. volatile or thermally stable. C. non-volatile or thermally stable. D. volatile or thermally unstable.
7	The solid remained on filter paper during filtration is called the	A. Substance B. Residue C. Undue D. Filtrate
8	Fluted filter paper is used to:	A. Decrease rate of filtration B. Increase rate of filtration C. Maintain rate of filtration D. None of above
9	Chromatography is derived from Greek word 'Khromatos' means:	A. Type writting B. Printing C. Color writing D. Writing
10	Without proper suction,filtration is:	A. Rapid process B. Fague process C. Slow process D. Useless process

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