ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

Without proper suction filtration is

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

Question # 2

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 # 3

Direct conversion of solid into vapors is called :

Crystallization A
Sublimation B
Obligation C
Vaporization. D

Question # 4

The detection of functional group is called:

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

Question # 5

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

Tested A
^Filtered B
Checked C
All of above D

Question # 6

95% ethanol is called:

Rectified other A
Diesel B
Rectified spirit C
Petrol D

Question # 7

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 8

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 # 9

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

60°
A
30° B
45° C
90° D

Question # 10

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 # 11

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

Solvent front A
Base line B
Element C
Chromatogram D

Question # 12

The sample being analyzed is called :

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

Question # 13

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

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

Question # 14

Proteins and amino acid can be separated by:

Filtration A
^Sublimation B
Chromatography C
Suction D

Question # 15

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 # 16

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 # 17

The solution left after the formation of crystals is called :

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

Question # 18

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 # 19

A complete chemical Characterization of a compound must include:

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

Question # 20

Which one of the following substance is use as decolonizing agent

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

Question # 21

The filtration process is used to separate solid from:

Liquid A
Gas B
Solid C
All of above D

Question # 22

The detection of functional group is called :

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

Question # 23

A complete chemical characterization of a compound must include

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

Question # 24

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 # 25

95% ethanol is called :

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

Question # 26

Estimation of Na in sea water is an example of

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

Question # 27

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 # 28

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 # 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

Which one of the following substances is used to decolourizing agent

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

Sr.#	Question	Answer
1	The liquid obtained after passing the mixture through filter paper is termed as :	A. Extract. B. Residue. C. Filtrate. D. Sample.
2	95% ethanol is called:	A. Rectified other B. Diesel C. Rectified spirit D. Petrol
3	The tip of the funnel should touch the side of the beaker in order to avoid	A. Splashing B. Leakage C. Mixing D. Contamination
4	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
5	Naphthalene, iodine and NH_{4 can :}	A. Sublime. B. Both (a) and (c). C. Crystallize. D. None of above.
6	The detection of functional group is called :	A. Numerical analysis. B. Qualitative analysis. C. Combustion analysis. D. Quantitative analysis.
7	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.
8	Selection of filter paper depends upon sizes of particles to be:	A. Tested B. ^Filtered C. Checked D. All of above
9	The tip of funnel should be 1 or 2cm larger than the circle of the	A. Beaker B. Solid C. Filter paper D. Liquid
10	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.

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