ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

Estimation of Na in sea water is an example of

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

Question # 2

The filtration process is used to separate solid from

Liquid A
Gas B
Solid C
All of above D

Question # 3

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 # 4

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

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

Question # 5

The sample being analyzed is called :

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

Question # 6

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

Extract A
Residue B
Filtrate C
Sample D

Question # 7

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 # 8

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 # 9

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 # 10

Which one of the following substance is no used as drying agent in desiccators

Silica gel A
CaCl₂ B
Phosphorous C
NaCL(50%) D

Question # 11

Naphthalene, iodine and NH_{4 can :}

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

Question # 12

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 # 13

Sintered glass is porous material used for:

Absorption A
Decoration B
Filtration C
All of above D

Question # 14

Direct conversion of solid into vapors is called :

Crystallization A
Sublimation B
Obligation C
Vaporization. D

Question # 15

95% ethanol is called :

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

Question # 16

The filtration process is used to separate solid from:

Liquid A
Gas B
Solid C
All of above D

Question # 17

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 # 18

The sample being analyzed is called

Electrolyte A
Substance B
Analyte C
All of above D

Question # 19

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 20

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 # 21

Analytical chemistry is the science of

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

Question # 22

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

Tested A
^Filtered B
Checked C
All of above D

Question # 23

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 # 24

Which one of the following substance is use as decolonizing agent

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

Question # 25

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 # 26

95% ethanol is called:

Rectified other A
Diesel B
Rectified spirit C
Petrol D

Question # 27

Proteins and amino acid can be separated by:

Filtration A
^Sublimation B
Chromatography C
Suction D

Question # 28

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

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

Question # 29

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 # 30

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

Sr.#	Question	Answer
1	The solution left after the formation of crystals is called :	A. Residue. B. Filtrate. C. Mother liquor. D. None of these.
2	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.
3	Identification of a substance, determination of its structure an quantitative analysis of its composition are the aspects covered by:	A. Modern analytical physics. B. Mechanical chemistry. C. Biochemistry. D. Modern analytical chemistry.
4	The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}	A. Butterfly paper. B. Ordinay paper. C. Flying paper. D. Filter paper.
5	Solvent extraction is an unstable,Process and it is controlled by:	A. Alcohol extraction B. Petrol extraction C. Phenol extraction D. Ether extraction
6	The sample being analyzed is called	A. Electrolyte B. Substance C. Analyte D. All of above
7	The detection of functional group is called	A. Numerical analysis B. Qualitative analysis C. Combustion analysis D. Quantitative analysis
8	Which one of the following substance is use as decolonizing agent	A. Asbestos B. Animal charcoal C. conc, H₂SO₄ D. Silica gel
9	Direct conversion of solid intro vapours is called:	A. Crystallization B. Sublimation C. Obligation D. Vapourization
10	The solid remained on filter paper during filtration is called the	A. Substance B. Residue C. Undue D. Filtrate

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