ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

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 # 2

The sample being analyzed is called :

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

Question # 3

Estimation of Na in sea water is an example of :

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

Question # 4

Sintered glass is a porous material use for :

Absorpton A
Decoration. B
Filtration. C
All of above. D

Question # 5

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 # 6

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

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

Question # 7

The filtration process is used to separate solid from:

Liquid A
Gas B
Solid C
All of above D

Question # 8

The other name for distribution law is

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

Question # 9

The apex angle of the folded filter paper is slightly greater than :

60°
A
30° B
45° C
90° D

Question # 10

The solution left after the formation of crystals is called :

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

Question # 11

Analytical chemistry is the science of :

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

Question # 12

The comparative rates at which the solutes move in paper chromatography, depend on:

the size of per sued. A
R_f values of solutes B
temperature of the experiment C
size of the chromatography tank used. D

Question # 13

The sample being analyzed is called:

Electrolyte A
Residue B
Undue C
Filtrate D

Question # 14

The filtration process is used to to separate solid from :

Liquid. A
Gas. B
Solid. C
All of above. D

Question # 15

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

Solvent front A
Base line B
Element C
Chromatogram D

Question # 16

Estimation of Na in sea water is an example of

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

Question # 17

Without proper suction filtration is

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

Question # 18

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 # 19

95% ethanol is called :

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

Question # 20

The apex angle of the folded filter paper is slightly greater is termed as:

60 degree A
30 degree B
45 degree C
90 degree D

Question # 21

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 22

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 # 23

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 # 24

Proteins and amino acid can be separated by:

Filtration A
^Sublimation B
Chromatography C
Suction D

Question # 25

Without proper suction,filtration is:

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

Question # 26

Which one of the following substances is used to decolourizing agent

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

Question # 27

The solid remained on filter paper during filtration is called the

Substance A
Residue B
Undue C
Filtrate D

Question # 28

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 # 29

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 # 30

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

Tested A
^Filtered B
Checked C
All of above D

Sr.#	Question	Answer
1	Sintered glass is porous material used for:	A. Absorption B. Decoration C. Filtration D. All of above
2	The tip of the funnel should touch the side of the beaker in order to avoid :	A. Splashing. B. Leakage. C. Mixing. D. Contamination.
3	Analytical chemistry is the science of :	A. Chemical Characterization. B. Physical Characterization. C. Biological Characterization. D. Biochemical Characterization.
4	The solution left after the formation of crystals is called :	A. Residue. B. Filtrate. C. Mother liquor. D. None of these.
5	The comparative rates at which the solutes move in paper chromatography, depend on:	A. the size of per sued. B. R_f values of solutes C. temperature of the experiment D. size of the chromatography tank used.
6	Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by	A. Modern analytical physics B. Mechanical chemistry C. Biochemistry D. Modern analytical chemistry
7	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
8	Without proper suction filtration is	A. Rapid process. B. Fague process. C. Slow process. D. Useless process.
9	The filtration process is used to to separate solid from :	A. Liquid. B. Gas. C. Solid. D. All of above.
10	The solid remained on filter paper during the filtration is called the :	A. Substance. B. Residue. C. Undue. D. Filtrate.

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