Chemistry Practice Tests 2

Created by Ali Durrani

NET Practice

Chemistry Practice Test 2

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1 / 100

Category: Chemistry Ch 6 Class 12

Which element does not show magnetic properties?

Zn

Fe

Co

Mn

2 / 100

Category: Chemistry Ch 15 Class 12

The suspected liver carcinogen which also has negative reproduction and developmental effect on humans is:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

A) Iodoform

B) Bromoform

C) Tropoform

D) Chloroform

3 / 100

Category: Chemistry Ch 10 Class 11

In the following reaction:

3Br2 +6CO32- + 3H2O → 5Br-1 + BrO3-1 + 6HCO3-1

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

A) bromine is: reduced and water Is oxidized

B) bromine is both reduced and oxidized

C) bromine is oxidized and carbonate is reduced

D) bromine is neither reduced or oxidized

4 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following is an example of a co-polymer?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyamide

B) Polystyrene

C) Polyvinyl acetate

D) Polyvinyl chloride

5 / 100

Category: Chemistry Ch 4 Class 12

The geometry of the complex compounds usually depends upon:

PMC 2021 Tested
Chemistry
d and f Block Elements
Elimination Tool:

A) All of the given choices

B) Hybridization of central metal

C) Type of ligands

D) Types of hybridization in the elements of ligands

6 / 100

Category: Chemistry Ch 13 Class 12

What is the product of both fermentation reactions and fractional distillation:

NTS 2010
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) An ester

B) An acid

C) An alcohol

D) A soap

7 / 100

Category: Chemistry Ch 4 Class 11

Amorphous solids turns into glass like state from rubber like state, this is called

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) transition

B) crack transition

C) glass transition

D) all of these

8 / 100

Category: Chemistry Ch 7 Class 11

Which of the following values of heat of formation indicates that the product is least stable?

NTS 2017
Chemistry
Thermochemistry
Elimination Tool:

A) -393.5 KJ

B) -972.7 KJ

C) +89.9 KJ

D) +272.2 KJ

9 / 100

Category: Chemistry Ch 12 Class 12

The flavour of amyl butyrate is:

PreMedPK MDCAT Mock 5
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Mango

B) Raspberry

C) Apricot

D) Orange

10 / 100

Category: Chemistry Ch 14 Class 12

Which of the following element is not usually present in all proteins?

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

A) Carbon

B) Hydrogen

C) Nitrogen

D) Sulphur

11 / 100

Category: Chemistry Ch 8 Class 12

20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

A) C2H6

B) C3H4

C) C3H6

D) C3H8

12 / 100

Category: Chemistry Ch 15 Class 12

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

A) Filtration

B) Fractional distillation

C) Steam distillation

D) Fractional sublimation

13 / 100

Category: Chemistry

Q.112 If uncertainty in momentum of electron is zero, the uncertainty in its position would be?

A. Less than zero

B. More than zero

C. One

D. Infinite

14 / 100

Category: Chemistry Ch 16 Class 12

Ozone absorbs

UV

Radioactive radiations

IR

All of these

15 / 100

Category: Chemistry Ch 11 Class 12

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

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) CH3COCH3

B) CH3COOCH3

C) CH3CH2CHO

D) CH3CH2COOH

16 / 100

Category: Chemistry Ch 6 Class 12

d-d transitions in transition metals gives?

Crystalline structure

characteristic color

Hardness

d) Higher reactivity

17 / 100

Category: Chemistry Ch 5 Class 11

The charge on one proton is:

NUMS 2019 Reconduct
Chemistry
Atomic Structure
Elimination Tool:

A) 1.602 x 10-31C

B) 1.602 x 10-27C

C) 1.602 x 10-19C

D) 1.602 x 10-11C

18 / 100

Category: Chemistry Ch 1 Class 11

Mass of a neutron in amu is?

1.008386

1.007376

0.0005

None

19 / 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

20 / 100

Category: Chemistry Ch 2 Class 12

Which one of the following alkaline earth metal carbonates is thermally the most stable?

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) BaCO3

B) MgCO3

C) CaCO3

D) SrCO3

21 / 100

Category: Chemistry Ch 5 Class 11

Choose the value of the Rydberg constant among the following values:

NUMS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) 1.09678 x 107 m-1

B) 1.602 x 10-19 C

C) 1.7588 x 1011 C

D) 1.007 x 107 m-1

22 / 100

Category: Chemistry Ch 10 Class 12

Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-CI

B) R-F

C) R-Br

D) R-I

23 / 100

Category: Chemistry Ch 11 Class 12

Phenol reacts with CH3COCl to give:

NUMS 2019 Reconduct
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Acid

B) Ester

C) Alcohol

D) Aldehyde

24 / 100

Category: Chemistry Ch 2 Class 12

For Alkali Metals, decrease in the ionization potential is because of the increasing:

Charge on the nucleus

) Distance between nucleus and outer most electron

Size of the atom

None of these

25 / 100

Category: Chemistry

Q.89 Iftwo substituents are present at 1,4 positions then the isomer is called As____________?

A. Ortho

B. Meta

C.Para

D.None of these

26 / 100

Category: Chemistry Ch 2 Class 12

Which is most basic in character?

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

A) RbOH

B) KOH

C) LIOH

D) NaOH

27 / 100

Category: Chemistry Ch 9 Class 11

For a chemical reaction to occur, particles that collide should:

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

A) Have proper orientations

B) Have proper energies

C) All of these

D) Be in a homogenous mixture

28 / 100

Category: Chemistry Ch 5 Class 11

If an electron jumps from fourth to first orbit, which of the following series will it show?

Lyman

Balmer

Pfund

None of these

29 / 100

Category: Chemistry

Q.123 Protein present in hides of animals is precipitated by

A. Tannic acid

B. Stearic acid

C. Oxalic acid

D. Acetic acid

30 / 100

Category: Chemistry Ch 11 Class 12

phenol, and ethers are the derivatives of?

Carboxylic acid

Alkenes

Organic derivatives of water

Benzene

31 / 100

Category: Chemistry Ch 11 Class 12

Alkoxicies react with alkyl halide to form? a

Ether

Ester

Carboxylic acid

alcohol

32 / 100

Category: Chemistry

Q.96 If increase in temperature and volume of an ideal gas is two times, then the initial pressure p charge to

A. 4P

B. 2P

C. P

D. 3P

33 / 100

Category: Chemistry Ch 10 Class 11

In Lead-Acid battery, product formed at anode during discharging is

PbSO4

Pb

SO2

SO4

34 / 100

Category: Chemistry Ch 8 Class 12

In which of the following C-C bond length is the minimum?

Alkane

Alkene

Benzene

Same length in all

35 / 100

Category: Chemistry Ch 11 Class 11

Blue litmus turns red in a solution of PH

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Below 7

B) 7

C) Above 7

D) at all 7

36 / 100

Category: Chemistry Ch 1 Class 11

Which of the following will react with water?

NUMS 2016
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) CHCl3

B) Cl3CCHO

C) CHI4

D) ClCH2CH2Cl

37 / 100

Category: Chemistry Ch 9 Class 12

Which of the following Is formula of Benzyl Alcohol?

C6H5CHO

C6H5CH202CC6H5

C6H5CH2OH

C5H5N

38 / 100

Category: Chemistry Ch 5 Class 12

Which of the following halogen does not form stable oxyacids?

CI

F

Br

I

39 / 100

Category: Chemistry Ch 15 Class 12

Polystyrene is an additional polymer. Which one of the following structures represents
the monomer of polystyrene?

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

A) CH2=CH2

B) CH2=CH-CH3

C) CH2=CH-Cl

D) CH2=CH-C6H5

40 / 100

Category: Chemistry Ch 9 Class 12

How many chain isomers are possible for the alkane C6H14?

NTS 2016 SMBBMC
Chemistry
Hydrocarbons
Elimination Tool:

A) six

B) five

C) four

D) nine

41 / 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

42 / 100

Category: Chemistry Ch 2 Class 12

Only two elements are present in:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Period 1

B) Period 2

C) Period 3

D) Period 4

43 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is the most widely used fertilizer in Pakistan?

Ammonium Nitrate

Ammonia

Calcium Nitrate

Urea

44 / 100

Category: Chemistry Ch 8 Class 11

For which one of the following gaseous equilibrium will an increase in pressure increase the yield of the product:

NTS 2014
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2HI ⇌ H2 + I2

B) 2SO2 + O2 ⇌ 2SO3

C) H2O + CO ⇌ H2+ CO2

D) H2 + Br2 ⇌ 2HBr

45 / 100

Category: Chemistry Ch 4 Class 11

The properties of liquid crystals are intermediate between crystals and:

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

A) Anisotropic liquids

B) Nematic liquids

C) Isotropic liquids

D) Liquids

46 / 100

Category: Chemistry Ch 10 Class 11

When electricity is passed through water in the presence of an acid, oxygen and ______ is produced.

NTS 2018
Chemistry
Electrochemistry
Elimination Tool:

A) Carbon

B) CO

C) CO2

D) Hydrogen

47 / 100

Category: Chemistry Ch 13 Class 12

Chemical formula of MaIonic Acid is?

C3H4O4

C4H4O4

C6H10O4

C5H10O4

48 / 100

Category: Chemistry

Q.69 For the expression of solubility the general formula of the sparingly soluble salt is

A. AB

B. AB2

C. AB3

D. A3B

49 / 100

Category: Chemistry Ch 3 Class 12

What is the chemical name of SANDUR?

Tetraplumbic oxide

Triplumbic oxide

Triplumbic tetraoxide

Lead dioxide

50 / 100

Category: Chemistry Ch 9 Class 11

The amount of solute present in the given amount of solvent is called:

NTS 2017
Chemistry
Solution and Colloids
Elimination Tool:

A) Molarity

B) Molality

C) Concentration

D) Solubility

51 / 100

Category: Chemistry Ch 10 Class 12

Alkyl halides can also be obtained by halogenation of ________.

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Alcohols

B) Alkenes

C) Alkanes

D) Ketones

52 / 100

Category: Chemistry Ch 5 Class 11

What are the values of orbital quantum number/0 and magnetic quantum number(m) for subshell?

l=1,m=0,+1-1

l= 0,m= 0

l = 2, m = 0, +1-1, +/- 2

l = 3, m= 0, +/-1, +/- 2, +/-3

53 / 100

Category: Chemistry Ch 7 Class 12

How many chain isomers can be obtained from the alkane C6H14?

NTS 2016 DUHS & JSMU
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 7

B) 6

C) 5

D) 4

54 / 100

Category: Chemistry Ch 5 Class 12

Which of the following show halogens?

F to At

N to CH

C to Sn

H to Cs.

55 / 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

56 / 100

Category: Chemistry Ch 7 Class 12

Which of the following intermediate has the complete octet around the carbon atom.

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Free radical

B) Carbanion

C) Carbonium ion

D) None of these

57 / 100

Category: Chemistry Ch 1 Class 11

In the ion-electron method of balancing equations, how oxygen is balanced?

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) O is balanced by adding H₂O

B) O is balanced by adding OH

C) All of these

D) O is balanced by adding O₂

58 / 100

Category: Chemistry Ch 1 Class 11

Formula mass is considered for compounds instead of their molecular mass.

PMC Practice 21
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Metallic

B) Ionic

C) Covalent

D) Polar covalent

59 / 100

Category: Chemistry Ch 2 Class 12

The basic character of alkali metal oxides:

Decreases down the group

Remains same

Increases down the group

None of these

60 / 100

Category: Chemistry

Q.79 Salt Bridge is used for the purpose of

A. Producing Electrons

B. Circuit Completion

C. Increasing speed electrons

D. All of these

61 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

62 / 100

Category: Chemistry Ch 13 Class 12

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbohydrates

B) Lipids

C) Proteins

D) DNA

63 / 100

Category: Chemistry Ch 3 Class 11

Real gases deviate significantly from ideal gas behavior at

Low temperature and high pressure

High temperature and low pressure

None of these

Noth a and b

64 / 100

Category: Chemistry Ch 10 Class 12

atalyst used in the preparation of alkyl halide from alcohol

Platinum/charcoal

LiH4

Rock salt

ZnCl2

65 / 100

Category: Chemistry Ch 1 Class 11

Isotopes are the atoms of same element having different number of _____.

PMC Practice 26
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Electrons

B) Protons

C) Positrons

D) Neutrons

66 / 100

Category: Chemistry Ch 9 Class 11

Boiling point constants help us to determine:

UHS 2012
Chemistry
Solution and Colloids
Elimination Tool:

A) Molar masses

B) Volumes

C) Pressures

D) Masses

67 / 100

Category: Chemistry Ch 10 Class 11

CH3Cl + Cl2 —-> CH2Cl2 + HCl is an example of ?

NTS 2015 SMBBMC
Chemistry
Electrochemistry
Elimination Tool:

A) Oxidation reduction

B) Addition reaction

C) Substitution reaction

D) Autoxidation reaction

68 / 100

Category: Chemistry Ch 1 Class 12

Which one of the following is acidic?

B(OH)3

Ca(OH)2

Mg(OH)3

NaOH

69 / 100

Category: Chemistry Ch 3 Class 11

Which of the following is constant during an isothermal process?

Volume

Pressure

Temperature

Both b and c

70 / 100

Category: Chemistry

Vinyl bromide can be prepared from:

Hydroxyl bromide

Ethylene dibromide

Vicinal brornida

All of these

71 / 100

Category: Chemistry

Which of the following has the least electron affinity value?

NUMS Mock 1
Chemistry
Periodicity in Elements

A) 12 C 6

B) 14 N 7

C) 16 8 7

D) 19F 9

72 / 100

Category: Chemistry Ch 9 Class 11

The elevation in boiling point ∆?? is equal to ebullioscopic constant ?? when the Molarity (?) of the solution is:

ETEA 2018
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.1m

B) 1.0m

C) 10.0m

D) Statement is wrong

73 / 100

Category: Chemistry Ch 8 Class 11

Equilibrium constant has no units if?

The number moles are same on both sides of the chemical equation

The number of moles is different on both sides.

The number of moles is greater in the product

If the rate of reaction is constant

74 / 100

Category: Chemistry

Q.126 What is the coordination number of Pt in [PtCINO2)NH3)4]

A. 2

B. 4

C. 6

D. 7

75 / 100

Category: Chemistry Ch 3 Class 12

Aluminium is a

Insulator

Conductor

Semi-Conductor

Photo Conductor

76 / 100

Category: Chemistry Ch 10 Class 12

Pick correct pair about the difference between E1 and E2 mechanism of methyl bromide forming an alkene.

NUMS 2019 Cancelled
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) E1 mechanism- strong base and alkyl halide, E2 Mechanism- weak base and alkyl halide

B) E1 mechanism- weak base and alkyl halide, E2 mechanism- strong base and alkyl halide

C) E1 mechanism- strong base and alkyl halide, E2 mechanism- strong base and alkyl halide

D) E1 mechanism- weak base and alkyl halide, E2 mechanism- weak base and alkyl halide

77 / 100

Category: Chemistry

Bond energy of C-CI in kJ/moles Is:

More than that of C-F

Less than C-Br

More than that of C-Br but less than C-I

More than that of C-Br and C-I

78 / 100

Category: Chemistry Ch 6 Class 11

Electronegativity is defined as the power of an atom in a molecule to

Repel electrons towards itself

Attract electrons towards itself

Expand itself

All of the above

79 / 100

Category: Chemistry Ch 2 Class 11

is the process of transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Vaporization

Evaporation

Sublimation

None of these

80 / 100

Category: Chemistry Ch 16 Class 12

Which of the following is a secondary pollutant?

CO2

Sulphur Oxide

Nitrogen Oxide

O3

81 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is not a derivative of benzene?

PMC Practice 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Pyrrole

B) Furan

C) Thiophene

D) All

82 / 100

Category: Chemistry Ch 6 Class 11

Which noble gas has highest ionization energy?

He

Ne

Ar

Kr

83 / 100

Category: Chemistry Ch 1 Class 11

The break down of molecular ions from natural productsgive important information about?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Size

B) Position

D) Structure

C) Shape

84 / 100

Category: Chemistry Ch 10 Class 11

Oxidation state of P in Mg2P3O5 Is

+2

-2

-1

1

85 / 100

Category: Chemistry Ch 4 Class 11

The rate of diffusion of hydrogen gas as compared to that of oxygen gas is:

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 6 times

B) 4 times

C) one fourth

D) one eighth

86 / 100

Category: Chemistry Ch 1 Class 12

Who started the development of the First Periodic Table?

) Antoine Bequerel

Dimitri Mendeleev

Robert Boyle

John Newlands

87 / 100

Category: Chemistry

In a reaction:
A+B 2C when equilibrium was attained, the concentration was
[A]=[B]=4 moles/dm3
[C]=6 moles/dm3
the equilibrium constant Kc of this reaction is:

NUMS Mock 4
Chemistry
Chemical Equilibrium

A) 1.25

B) 2.25

C) 3.25

D) 2.75

88 / 100

Category: Chemistry

The potential difference of an electrochemical cell is measured by:

NUMS Mock 2
Chemistry
Electrochemistry

A) Ammeter

B) Voltmeter

C) Galvanometer

D) Calorimeter

89 / 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

90 / 100

Category: Chemistry Ch 9 Class 12

Which one of the following is the correct structure of 2,2-Dimethylbutane?

PMC Sample 1
Chemistry
Hydrocarbons
Elimination Tool:

A) CH₃(CH₃)₂CCH₂CH₃

B) CH₃(CH₃)CCHCH₃

C) CH₃(CH₃)CCH₂CH₃

D) CH₃CH₂CH₂CH₃

91 / 100

Category: Chemistry Ch 10 Class 12

RMgX is an organometallic compound, generally known as:

NTS 2012
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Grignard's Reagent

B) Baeyer's Reagent

C) Ether

D) Ester

92 / 100

Category: Chemistry

Q.103 Left-handed helix in proteins secondary structure is called as

A. Alpha helix

B. Beta helix

C. Spiral

D. Coucentrate

93 / 100

Category: Chemistry Ch 2 Class 12

Which of the following do not occur in Free State?

Li

Mg

Both

None of these

94 / 100

Category: Chemistry Ch 5 Class 11

Which of the following is the electronic configuration of 19K?

NUMS 2016
Chemistry
Atomic Structure
Elimination Tool:

A) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2

B) 1s2, 2s2, 2p6, 3s2, 3p6, 3s2, 3d1

C) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5

D) 1s2, 2s2, 2p6, 3s2, 3p6, 4s1

95 / 100

Category: Chemistry Ch 8 Class 11

If Kc < 1, then the reaction proceeds:

Forwards

Backwards

Is at Equilibrium

None of these

96 / 100

Category: Chemistry

Q.21 SN reaction is a_______________?

A. Multistep reaction

B. Two step reactions

C. Concerted reaction

D. 3 step reaction

97 / 100

Category: Chemistry Ch 1 Class 12

The products of decomposition of Mg(NO3)2are:

NUMS 2017
Chemistry
Periodicity in Elements
Elimination Tool:

A) MgO and NO2

B) Mg and NO2

C) MgO, NO2and O2

D) Mg(NO3)2

98 / 100

Category: Chemistry

Q.72 Isopentane is an example of_

A. Aromatic compounds

B. Branched chain compound

C. Alicyclic compounds

D. None of these

99 / 100

Category: Chemistry

Q.92 Change in Pressure will only affect fhe.substances which are in

A. Liquid stale

B. Solid State

C.Plasma state

D. Gaseous State

100 / 100

Category: Chemistry Ch 8 Class 11

Consider the following reaction

N2(g) + O2(g) 2NO (g) Kc- 0.1 at 2000 C

If the original concentration of N2 and O2 were 0.1 M each. Calculate the concentrations of NO at equilibrium.

NTS 2016 DUHS & JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 0.028 M

B) 0.0012 M

C) 0.18 M

D) 0.0018 M

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