ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 2

95% ethanol is called :

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

Question # 3

The sample being analyzed is called :

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

Question # 4

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

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

Question # 5

The detection of functional group is called:

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

Question # 6

The detection of functional group is called

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

Question # 7

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 # 8

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 # 9

The filtration process is used to separate solid from

Liquid A
Gas B
Solid C
All of above D

Question # 10

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 # 11

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 # 12

Which one of the following substance is use as decolonizing agent

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

Question # 13

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 # 14

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

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

Question # 15

In CCL4 solvent I3 shows:

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

Question # 16

Without proper suction filtration is

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

Question # 17

The sample being analyzed is called:

Electrolyte A
Residue B
Undue C
Filtrate D

Question # 18

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

Extract A
Residue B
Filtrate C
Sample D

Question # 19

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 # 20

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

Extract. A
Residue. B
Filtrate. C
Sample. D

Question # 21

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 # 22

The filtration process is used to separate solid from:

Liquid A
Gas B
Solid C
All 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

Which one of the following substances is used to decolourizing agent

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

Question # 25

The detection of functional group is called :

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

Question # 26

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

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

Question # 27

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 # 28

Analytical chemistry is the science of :

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

Question # 29

Estimation of Na in sea water is an example of

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

Question # 30

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

60°
A
30° B
45° C
90° D

Sr.#	Question	Answer
1	Direct conversion of solid into vapors is called :	A. Crystallization B. Sublimation C. Obligation D. Vaporization.
2	The other name for distribution law is	A. Dispersive law B. Partition law C. Avogadro's law D. separation law
3	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.
4	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
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	95% ethanol is called:	A. Rectified other B. Diesel C. Rectified spirit D. Petrol
8	Gooch crucible is made of:	A. Brass B. Porcelain C. Bronze D. .Gold
9	The liquid obtained after passing the mixture through filter paper is termed as:	A. Extract B. Residue C. Filtrate D. Sample
10	The filtration process is used to to separate solid from :	A. Liquid. B. Gas. C. Solid. D. All of above.

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