Chemistry Practice Tests 5 - PLS Academy

Chemistry Practice Test 5

Chemistry Practice Test 5 is designed to help students strengthen their understanding of key chemistry concepts, formulas, and reactions for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from thermodynamics, chemical equilibrium, coordination compounds, and practical applications, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 5

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1 / 100

Category: Chemistry Ch 4 Class 11

Water boils when:

Vapor pressure becomes equal to Atmospheric Pressure

Vapor pressure is less than Atmospheric Pressure

Vapor pressure is greater than Atmospheric Pressure

All of the above

2 / 100

Category: Chemistry Ch 10 Class 12

Which of the following has the strongest bond?

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) CH3 – F

B) CH3 – I

C) CH3 – Cl

D) CH3 – Br

3 / 100

Category: Chemistry Ch 10 Class 11

which one of the following Is the oxidation number of Iodine in I2?

None

4 / 100

Category: Chemistry Ch 1 Class 12

Covalent hydrides are:

Gaseous

Solid

Liquids

Both a & c

5 / 100

Category: Chemistry Ch 14 Class 12

Which one of the following is the pure carbon compound and used as a reducing agent in industries?

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

A) Coal tar

B) Petroleum

C) Coal gas

D) Coke

6 / 100

Category: Chemistry

The bond, which is based on attractive forces between oppositely charged ions, is:

NUMS Mock 1
Chemistry
Chemical Bonding

A) Covalent bond

B) Dative bond

C) Ionic bond

D) Metallic bond

7 / 100

Category: Chemistry Ch 4 Class 12

Copper is a typical transition metal. Its atomic number is 29. In which oxidation state does it have a partially filled orbital in d-subshell?

UHS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu

B) Cu+

C) Cu-

D) Cu2+

8 / 100

Category: Chemistry

Q.22 The unhybridized p orbitals of benzene are present in the form of ?

A. Between the C-C bonds of benzene

B. Above and below the carbon bonds

C. In the form of cloud above and below the benzene ring

D. None of these

9 / 100

Category: Chemistry Ch 9 Class 11

0.5 molar solution NaOH contains:

NUMS 2020
Chemistry
Solution and Colloids
Elimination Tool:

A) 40g NaOH in one dm3

B) 80g NaOH in one dm3

C) 10g NaOH in one dm3

D) 20g NaOH in one dm3

10 / 100

Category: Chemistry Ch 4 Class 11

In the gaseous state, the distance between the molecules is ___ times _____ than their diameters.

PMC Sample 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 2, lesser

B) 3, lesser

C) 3, greater

D) 2, greater

11 / 100

Category: Chemistry Ch 8 Class 11

Buffer solution of every liquid is

Same

Different

Depends upon pH

None of these

12 / 100

Category: Chemistry Ch 2 Class 12

Pierrie Curie and Marie Curie isolated which radioactive element?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Elimination Tool:

A) Lithium

B) Radium

C) Boron

D) Uranium

13 / 100

Category: Chemistry Ch 8 Class 11

The Ksp of AgCl is 2.0 x 10^-10-1010 mol2dm-6 . The maximum concentration of Ag+ ions:

NUMS 2015
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2.0 x 10-10mol.dm-6

B) 1.41 x 10-5mol.dm-3

C) 1.0 x 10-5mol.dm-3

D) 4.0 x 10-20mol.dm-3

14 / 100

Category: Chemistry Ch 3 Class 11

Statement of Charles Law:

V is directly proportional to P

V is directly proportional to T

) P is inversely proportional to V

d) All of these

15 / 100

Category: Chemistry

Q.163 Which will need maximum energy to remove its one electron?

A. Na————– Na- +e

B. Ca——————-Ca– +e

C.K————K++ +e

D. C2+————– C3+ +e

16 / 100

Category: Chemistry Ch 6 Class 11

The first ionization energy is maximum for:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Na

B) Mg

C) Al

D) K

17 / 100

Category: Chemistry Ch 4 Class 12

Which one of the following Is a vulcanizing agent?

Sodium

Iron

Sulphur

Potassium

18 / 100

Category: Chemistry

IUPAC name of C6H5-CH2-CH2-NH2 is:

NUMS Mock 4
Chemistry
Fundamental Principles of Organic Chemistry

A) 2-phenyl ethenamine

B) 2-phenyl ethanamine

C) 2-phenyl ethylamine

D) 3-phenyl ethanamine

19 / 100

Category: Chemistry Ch 11 Class 11

Half-life of iron is? (A=59)

44.5 days

1.3 million years

3.8 days

2.5 billion years

20 / 100

Category: Chemistry Ch 14 Class 12

Who introduced the concept of macromolecules?

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

A) Runge

B) Maxwell

C) Staudinger

D) None of these

21 / 100

Category: Chemistry Ch 8 Class 11

The change in concentration of reactant or product per unit time is called:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Rate constant

B) Rate of reaction

C) Rate equation

D) Rate law

22 / 100

Category: Chemistry Ch 13 Class 12

Which type of carboxylic acid is produced from the hydrolysis of nitriles?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Beta-hydroxy carboxylic acids

B) Acids having one carbon more than the starting material

C) Acids having one carbon less than the starting material

D) Alpha-hydroxy acids

23 / 100

Category: Chemistry Ch 6 Class 12

d-d transitions in transition metals gives?

Crystalline structure

characteristic color

Hardness

d) Higher reactivity

24 / 100

Category: Chemistry Ch 5 Class 11

How many electrons can have the values n=2, l=1, and s=+½ in the configuration 1s2, 2s2, 2p3?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) 1

B) 3

C) 5

D) 7

25 / 100

Category: Chemistry

Q.146 a liquid crystalline state exist between two temperatures I-e melting temperature and temperature

A. Boiling

B. Freezing

C. Clearing

D. All of these

26 / 100

Category: Chemistry Ch 16 Class 12

The formula of “rock salt” is:

NTS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

A) NaOH

B) NaHCO3

C) Na2CO3

E) NaCl

27 / 100

Category: Chemistry

For a single step reaction A ->B + 2C, the rate law is:

NUMS Mock 3
Chemistry
Reaction Kinetics

A) Rate = k

B) Rate = k[A][B]

C) Rate = k[A]

D) Rate = k[B]

28 / 100

Category: Chemistry

Transfer of heat from hot surroundings to a cold refrigerator is an example of:

NUMS Mock 4
Chemistry
Thermochemistry

A) Spontaneous reaction

B) Non-Spontaneous reaction

C) First law of thermodynamics

D) All of the above options are correct

29 / 100

Category: Chemistry

Q.149 There are just only a few stable compounds, formed by noble gases like

A. XeF2

B. XeOF2

C. Xe3

D. All of these

30 / 100

Category: Chemistry Ch 4 Class 12

Which of the following does not occur in Free State?

Nitrogen

Phosphorous

Oxygen

Sulphur

31 / 100

Category: Chemistry Ch 2 Class 12

Commercial hydrogen is obtained from:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) coal gas

B) oil gas

C) marsh gas

D) producer gas

32 / 100

Category: Chemistry Ch 9 Class 12

Which of the following Is formula of Benzyl Alcohol?

C6H5CHO

C6H5CH202CC6H5

C6H5CH2OH

C5H5N

33 / 100

Category: Chemistry Ch 6 Class 11

GN lewis described which one of the following bonds?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic bond

B) covalent bond

C) coordinate covalent bond

D) all of the above

34 / 100

Category: Chemistry Ch 3 Class 11

Comparative rates of diffusion of He and SO2 will be _______.

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 8

B) 2

C) 4

D) 16

35 / 100

Category: Chemistry Ch 3 Class 11

When an element exists in more than one crystalline form, the phenomenon is termed as:

NTS 2010
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Isomorphism

B) Allotropy

C) Isomerism

D) Anisotropy

36 / 100

Category: Chemistry Ch 6 Class 12

Which of the following Is the reason that Iron is the most abundant element?

Oldest metal

Binding energy

Less stability

Ferromagnetic

37 / 100

Category: Chemistry Ch 1 Class 12

Ionization energy decreases down the group, from top to bottom, due to:

UHS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) Increase in atomic mass

B) Increase in shielding effect of the intervening electrons

C) Increase in proton number

D) Decrease in atomic size

38 / 100

Category: Chemistry Ch 1 Class 12

Maximum ionization potential is of:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) Ca

B) Na

C) Be

D) Mg

39 / 100

Category: Chemistry Ch 11 Class 12

Phenol is reduced to benzene on reaction with:

NaOH

KMnO4

40 / 100

Category: Chemistry Ch 8 Class 12

KOLBE’s method is used to prepare?

Ethane

Ethene

Ethyne

All of these

41 / 100

Category: Chemistry Ch 3 Class 12

Chromium dissolves in dilute H2SO4 for [Cr(H2O)6]2. The colour of the ion is:

NUMS 2016
Chemistry
d and f Block Elements
Elimination Tool:

A) Blue

B) Yellow

C) Brown

D) Pink

42 / 100

Category: Chemistry Ch 9 Class 11

Lowering of vapor pressure is directly proportional to?

Number of solute particles

Temperature

Chemical Formula

Number of solvent particle

43 / 100

Category: Chemistry Ch 9 Class 12

The structure of cyclohexane is:

PMC Sample 3
Chemistry
Hydrocarbons
Elimination Tool:

A) Trigonal

B) Pentagonal

C) Hexagonal

D) None of these options is correct

44 / 100

Category: Chemistry Ch 2 Class 11

The empirical formula of Glucose C6H12O6 is:

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) C6H12O6

B) CHO

C) CH2O

D) CH2O2

45 / 100

Category: Chemistry Ch 3 Class 11

The expression PV = nRT represents the:

NUMS 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Dalton’s Law

B) Avogadro’s Law

C) General gas equation

D) Van der Waals equation

46 / 100

Category: Chemistry Ch 10 Class 12

Grignard’s reagent on hydrolysis give

) Lower hydrocarbon

Higher hydrocarbon

Alcohols

Alkyl halides

47 / 100

Category: Chemistry Ch 7 Class 11

If a graph is plotted between pressure on x- axis and volume on y- axis for Boyle’s law verification, the curve obtained is called

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

A) pseudotherm

B) isotherm

C) biotherm

D) all of these

48 / 100

Category: Chemistry Ch 4 Class 12

F-block elements are called?

PMC Practice 1
Chemistry
d and f Block Elements
Elimination Tool:

A) Inner transition

B) Outer transition

C) Both

D) None

49 / 100

Category: Chemistry Ch 8 Class 11

A solution having pH = 0 is

Strongly basic

Weakly basic

Neutral

Strongly acidic

50 / 100

Category: Chemistry Ch 14 Class 12

Part of a polymer molecule has the following structure. -CH2 -CH2 -CH2 -CH2 -CH2 -CH2-

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

A) C2H4

B) C2H6

C) C3H6

D) C3H8

51 / 100

Category: Chemistry Ch 1 Class 11

What will be the mass in grams of 12 gram atom of carbon atoms?

12.66 x 10^-24

1.66 x 10^-24

1.992 x 10^-23

2.660 x 10^-23

52 / 100

Category: Chemistry Ch 6 Class 11

An ionic compound is most likely to be formed when:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionization energy of A is high but electron affinity of B is low

B) The ionization energy of A is low but electron affinity of B is high

C) Both ionization energy of A and electron affinity of B are high

D) Both ionization energy of A and electron affinity of B are low

53 / 100

Category: Chemistry Ch 11 Class 11

The effect of temperature on the rate of a reaction is given by:

NUMS 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Henderson’s equation

B) General gas equation

C) Arrhenius equation

D) Van der Waals equation

54 / 100

Category: Chemistry Ch 7 Class 11

The reaction 2CO + O2 -> 2CO2 proceeds slower because activation energy is:

NTS 2018
Chemistry
Thermochemistry
Elimination Tool:

A) Equilibrium

B) Constant

C) Low

D) High

55 / 100

Category: Chemistry Ch 11 Class 12

With which of the following alcohols do not react to form alkyl halides?

HCl

SOCl2

Br2

PCl3

56 / 100

Category: Chemistry Ch 12 Class 12

Ketone can be prepared by the oxidation of:

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

57 / 100

Category: Chemistry Ch 3 Class 12

The oxidation states of Boron are:

+1,+2 and +3

-1, -2 and -3

+1 and -1

+3 and -3

58 / 100

Category: Chemistry

Q.132 Cyclic compounds consist of except?

A. Alicyclic

B. Aromatic

C. Acyclic compounds

D. Carbocyclic compounds

59 / 100

Category: Chemistry Ch 3 Class 11

Statement of Graham’s Law is

The rate of diffusion is directly proportional to the square root of its density

The rate of diffusion is inversely proportional to the square of its density

The rate of diffusion is inversely proportional to its density.

The rate of diffusion is inversely proportional to the square root of its density

60 / 100

Category: Chemistry Ch 9 Class 12

The four bonds of carbon in methane are directed towards the corners of a:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

A) Cube

B) Pentagon

C) Hexagon

D) Tetrahedron

61 / 100

Category: Chemistry Ch 3 Class 12

In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) Cr3+

B) Ti3+

C) V3+

D) Zn2+

62 / 100

Category: Chemistry Ch 10 Class 11

Each half reaction in ion electron method is balanced by adding:

PMC Sample 1
Chemistry
Electrochemistry
Elimination Tool:

A) Electrons on left hand side

B) Electrons on right hand side

C) Both left or right hand side

D) None of these options are correct

63 / 100

Category: Chemistry

Q.72 Isopentane is an example of_

A. Aromatic compounds

B. Branched chain compound

C. Alicyclic compounds

D. None of these

64 / 100

Category: Chemistry Ch 11 Class 11

What is the order of the following reaction:

2NO +O2 -> 2NO2

NTS 2019
Chemistry
Reaction Kinetics
Elimination Tool:

A) 0

B) 1

C) 2

D) 3

65 / 100

Category: Chemistry

Which of the following compounds will give a secondary alcohol after reaction with NaBH4?

NUMS Mock 3
Chemistry
Alcohols, Phenols and Ethers

A) CH3COCH3

B) CH3COOCH3

C) CH3CH2CHO

D) CH3CH2COOH

66 / 100

Category: Chemistry Ch 14 Class 12

Which of the following fertilizers has the maximum percentage of nitrogen in solid state?

NUMS 2016
Chemistry
Macromolecules
Elimination Tool:

A) Ammonia

B) Urea

C) Di ammonium hydrogen phosphate

D) Ammonium nitrate

67 / 100

Category: Chemistry

The spectrum of He is expected to be similar to that of:

NUMS Mock 4
Chemistry
Atomic Structure

A) Hydrogen

B) Sodium

C) Oxygen

D) Li+

68 / 100

Category: Chemistry Ch 5 Class 11

Diameter of an atom is in the range of?

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) 0.2m

B) 0.2 nm

C) 2 x 10^-19nm

D) 0.2 pm

69 / 100

Category: Chemistry

Q.118 Which of the following will not give iodoform test?

A. Ethanol

B. 3-Pentanone

C. 2-Pentanone

D. Ethanal

70 / 100

Category: Chemistry Ch 1 Class 11

In combustion analysis method CO2 is absorbed by?

Mg(OH)2

KOH

Mg(CIO)2

None of thes

71 / 100

Category: Chemistry Ch 6 Class 11

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) S-S overlapping

B) S-Pz overlapping

C) S-Px overlapping

D) Pz – Pz overlapping

72 / 100

Category: Chemistry Ch 11 Class 11

Sum of all the exponents of the molar concentration of the reactant present in the rate equation is known as:

NTS 2012
Chemistry
Reaction Kinetics
Elimination Tool:

A) Molecularity

B) Order of reaction

C) Rate of reaction

D) gradient

73 / 100

Category: Chemistry Ch 10 Class 12

Order of reactivity of halogens towards alkanes is:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) F2> I2> Br2> Cl2

B) F2> Br2> Cl2> I2

C) F2> Cl2> Br2> I2

D) F2> Cl2> I2> Br2

74 / 100

Category: Chemistry Ch 11 Class 11

Reaction of Sodium with water is an example of

PMC Sample 3
Chemistry
Reaction Kinetics
Elimination Tool:

A) Reversible reaction

B) Endothermic

C) Irreversible

D) Slow

75 / 100

Category: Chemistry Ch 8 Class 12

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

76 / 100

Category: Chemistry Ch 7 Class 12

The rate of E1 reaction depends upon:

NTS 2019
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) The concentration of the substrate

B) The concentration of the nucleophile

C) The concenıration of the nucleophile and the substrate

D) The amount of the solvent used

77 / 100

Category: Chemistry

Q.90 Which of the following propefties belong to acetic acid?

A. Colourless liquid, odourless, sour taste

B. Bright colour bituer taste

C.Colourless solid, sour taste, pungent smell

D. All are incórreet

78 / 100

Category: Chemistry

Q.70 Which one of the following is an electrophile?

A. Br

B.CH4

C. NH3

D. H2O

79 / 100

Category: Chemistry Ch 8 Class 11

80 / 100

Category: Chemistry Ch 7 Class 11

Which one is not related to evaporation?

NUMS 2015
Chemistry
Thermochemistry
States of Matter
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Continuous

B) Endothermic

C) Exothermic

D) Spontaneous

81 / 100

Category: Chemistry Ch 3 Class 12

Orthoboric acid can NOT be obtained by which of the following?

Metaboricacid

Tetraboric acid

) Pyroboric acid

Boric anhydride

82 / 100

Category: Chemistry Ch 10 Class 12

The order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) RF > RCl > RBr > RI

B) RF > RBR > RCl > RI

C) RCl > RBr > RF > RI

D) RI > RBr > RCl > RF

83 / 100

Category: Chemistry

Tincture of Iodine is:

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) In alcohol with CHI3

B) In alcohol with I2

C) In ethanol and water mixture with KI and I2

D) In KI and CH3I

84 / 100

Category: Chemistry Ch 14 Class 12

Three different polymers are polymerized to form

Copolymer

Terpolymer

Homopolymer

None of these

85 / 100

Category: Chemistry Ch 1 Class 12

In which of the following chromium has different oxidation state?

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

A) K2Cr2O7

B) CrCl3

C) CrO3

D) K2CrO4

86 / 100

Category: Chemistry Ch 12 Class 12

Cyanohydrins can be synthesized from ketones through:

PreMedPK MDCAT Mock 4
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Nucleophilic addition reaction

B) Unimolecular Nucleophilic substitution reaction

C) Electrophilic substitution reaction

D) Bimolecular Nucleophilic substitution reaction

87 / 100

Category: Chemistry

Q.104 Which of the following does not show chain isomers

A. Butane

B. Propane

C. Pentane

D. Hexane

88 / 100

Category: Chemistry Ch 13 Class 12

Lysine is a
amino acid

Acidic

Basic

Neutral

Amphoteric

89 / 100

Category: Chemistry Ch 11 Class 12

Either Is dangerous In which of the following states?

Humid

Wet

dry

Hot

90 / 100

Category: Chemistry Ch 5 Class 11

Mass of electron in a.m.u is:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) 1.0073

B) 1.0087

C) 5.485 x 10-4

D) 9.1 x 10-31

91 / 100

Category: Chemistry Ch 11 Class 11

Rate = K [N2O5] has _____ of reaction.

NTS 2013
Chemistry
Reaction Kinetics
Elimination Tool:

A) First order

B) Pseudo first order

C) Second order

D) Third order

92 / 100

Category: Chemistry Ch 16 Class 12

Which of the following causes suffocation?

S02

CO2

Fog

All of these

93 / 100

Category: Chemistry Ch 3 Class 12

Aluminum silicate is used In:

Cement

Glass

Urea

None of these

94 / 100

Category: Chemistry Ch 8 Class 12

Which one of the following molecules has the shortest distance of carbon atoms?

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

A) CH3- CH3

B) CH2= CH2

C) CH≡ CH

D) CH3- CH2- CH3

95 / 100

Category: Chemistry Ch 8 Class 12

Which gas among the following can be dried by bubbling in H2S04?

Ammonia gas

HCI gas

Ethyne

Oxygen gas

96 / 100

Category: Chemistry Ch 10 Class 11

Hydrolysis means reaction with

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Oxygen

B) Hydrogen

C) Water

D) Air

97 / 100

Category: Chemistry Ch 14 Class 12

……is a technique to separate impurities from chemical products:

NUMS 2014
Chemistry
Macromolecules
Elimination Tool:

A) Lands Berger's method

B) Fractional crystallization

C) Beckmann method

D) None

98 / 100

Category: Chemistry Ch 10 Class 12

R-X on reaction with alcohols form:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-OH

B) ROR

C) R-X-OH

D) RH

99 / 100

Category: Chemistry Ch 11 Class 12

Phenol is derived from?

Benzene

Carboxylic acid

Alcohols

Aliphatic compounds

100 / 100

Category: Chemistry

Q.75 The increase in reaction rate of a reaction is 4 times when its temperature changes from

A. 2K to 4K B. 2K to 22K

B. 2K to 22K

C. 12K to 22K

D. 10K to 40K

Your score is

The average score is 55%

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