ECAT Pre Engineering Chemistry Chapter 2 MCQ Test With Answer

Question # 1

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

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

Question # 2

Estimation of Na in sea water is an example of :

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

Question # 3

95% ethanol is called:

Rectified other A
Diesel B
Rectified spirit C
Petrol D

Question # 4

A complete chemical Characterization of a compound must include:

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

Question # 5

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

Solvent front A
Base line B
Element C
Chromatogram D

Question # 6

The sample being analyzed is called:

Electrolyte A
Residue B
Undue C
Filtrate D

Question # 7

Without proper suction,filtration is:

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

Question # 8

The sample being analyzed is called :

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

Question # 9

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 # 10

Gooch crucible is made of:

Brass A
Porcelain B
Bronze C
.Gold D

Question # 11

Proteins and amino acid can be separated by:

Filtration A
^Sublimation B
Chromatography C
Suction D

Question # 12

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

60°
A
30° B
45° C
90° D

Question # 13

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 # 14

Chromatography is derived from Greek word 'Khromatos' means:

Type writting A
Printing B
Color writing C
Writing 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

Direct conversion of solid into vapors is called :

Crystallization A
Sublimation B
Obligation C
Vaporization. D

Question # 17

Sintered glass is a porous material use for :

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

Question # 18

95% ethanol is called :

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

Question # 19

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 # 20

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 # 21

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

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

Question # 22

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 # 23

The sample being analyzed is called

Electrolyte A
Substance B
Analyte C
All of above D

Question # 24

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 # 25

The other name for distribution law is

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

Question # 26

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 # 27

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 # 28

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 # 29

Naphthalene, iodine and NH_{4 can :}

Sublime. A
Both (a) and (c). B
Crystallize. C
None of above. 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	95% ethanol is called:	A. Rectified other B. Diesel C. Rectified spirit D. Petrol
2	The other name for distribution law is	A. Dispersive law B. Partition law C. Avogadro's law D. separation law
3	In CCL4 solvent I3 shows:	A. Blue Color B. Brown Color C. Purple Color D. Pink Color
4	Solvent extraction is an unstable,Process and it is controlled by:	A. Alcohol extraction B. Petrol extraction C. Phenol extraction D. Ether extraction
5	The filtration process is used to to separate solid from :	A. Liquid. B. Gas. C. Solid. D. All of above.
6	Selection of filter paper depends upon sizes of particles to be :	A. Tested. B. Filtered. C. Checked. D. All of above.
7	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.
8	A complete chemical Characterization of a compound must include:	A. Qualitative analysis B. Chemical analysis C. Quantitative analysis D. None of above
9	Solvent extraction is an equilibrium process and it is controlled by :	A. law of mass action. B. the amount of solvent used. C. distribution law. D. the amount of solute.
10	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

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