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 2 Class 12

The flame colour of Ca in flame test is:

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Orange red

B) Golden yellow

C) Red

D) Pink

2 / 100

Category: Chemistry Ch 1 Class 11

X-ray work in 20th century shows that diameter of the atoms are of the order?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1nm.

B) 2nm.

C) 3nm.

D) 4nm.

3 / 100

Category: Chemistry Ch 3 Class 11

What is the temperature at which the volume of gas is said to be zero?

NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 0 C

B) 4 C

C) -273.16 C

D) -173.16 C

4 / 100

Category: Chemistry Ch 9 Class 12

Acetylene on reacting with ammonium silver nitrate gives.

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

A) Silver metal

B) Silver mirror

C) Silver acetylide

D) Silver acetate

5 / 100

Category: Chemistry Ch 4 Class 12

The correct electronic configuration of Cr is:

PMC Practice 4
Chemistry
d and f Block Elements
Elimination Tool:

A) [Ar] 4s23d4

B) [Ar] 4s23d5

C) [Ar] 4s13d4

D) [Ar] 4s13d5

6 / 100

Category: Chemistry Ch 7 Class 12

Isomerism due to shifting of proton from one atom to another in a same molecule is known as:

NUMS 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Metamerism

B) Tautomerism

C) Position

D) Functional

7 / 100

Category: Chemistry Ch 4 Class 11

What does the constant ‘n’ represent in the equation of state for an ideal gas PV = nRT?

PMC Practice 5
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Number of atoms in the gas

B) Number of moles of the gas

C) Number of nucleons

D) Number of molecules of gas

8 / 100

Category: Chemistry Ch 5 Class 12

The order of decreasing power as an oxidizing agent is

F2> Br2> Cl2>I2

F2 > O2> Br2 > I2

F2 < O2 < Br2 < I2

F2 < Br2< C12 <I2

9 / 100

Category: Chemistry Ch 10 Class 11

If we balanced the following reaction , what is the net ionic charge on the right side of the equation?
__H+ +___ MnO4- + ____ Fe2+ →___ Mn2+ + ___ Fe3+ + ___ H2O

NTS 2014
Chemistry
Electrochemistry
Elimination Tool:

A) +5

B) +7

C) +10

D) +17

10 / 100

Category: Chemistry Ch 2 Class 12

Identify the correct statement:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl

B) Elemental Na is a strong oxidizing agent

C) Elemental Na is insoluble in NH3

D) Elemental Na is easily oxidizing

11 / 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

12 / 100

Category: Chemistry Ch 1 Class 11

The number of neutrons in H2SO4 are ____.

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

A) 5

B) 49

C) 48

D) 44

13 / 100

Category: Chemistry

Q.88 Most electronegative element among alkali metals

A. Li

B. Na

C. K

D. Rb

14 / 100

Category: Chemistry Ch 7 Class 12

Aromatic compounds burn with a sooty flame because:

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) They are resistant to react with oxygen

B) They have a cyclic structure

C) They have a high percentage of Carbon

D) They have a high percentage of hydrogen

15 / 100

Category: Chemistry Ch 15 Class 12

How many grams of micronutrients are needed by 1 acre of land?

100-1000

200-500

6 to 200

20 to 300

16 / 100

Category: Chemistry

Q.26 A polymer called Bakelite is formed by reaction of phenol with

A. hydrogen

B. ethers

C. carboxylic acid

D. formaldehyde

17 / 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

18 / 100

Category: Chemistry Ch 9 Class 11

Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

M2= 1000 Kb W2M1/ Tb W1

) M2= 1000 Kb W2/ Tb

M2 = Kb W1 Tb/1000

M2 =1000 Tb W21 Kb

19 / 100

Category: Chemistry Ch 12 Class 12

Tollen’s test is used for the detection of:

Aldehydes

Ketones

Carbonyl group

None of these

20 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has maximum Ionization energy?

21 / 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

22 / 100

Category: Chemistry Ch 3 Class 11

Matter changes from one state to another state on change in ___________.

NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) density

B) pressure

C) viscosity

D) all

23 / 100

Category: Chemistry Ch 16 Class 12

Which of the following is a water cleaning halogen?

24 / 100

Category: Chemistry Ch 8 Class 11

Buffer capacity depends upon

pOH

Remains same

Both a and b

25 / 100

Category: Chemistry Ch 4 Class 12

Which of the following sets is of coinage metals?

PMC Sample 2
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu, Ag, Au

B) Zn, Cd, Hg

C) Au, Ag, Zn

D) Li, Na, K

26 / 100

Category: Chemistry Ch 3 Class 11

Gases behave ideal at

Low pressure and High temperature

low pressure and Low temperature

High temperature and Low pressure

High temperature and High pressure

27 / 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

28 / 100

Category: Chemistry Ch 10 Class 11

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

PbSO4

SO2

SO4

29 / 100

Category: Chemistry

Q.116 Distillation of calcium acetate and calcium formate produces?

A. Formaldehyde

B. Acetaldehyde

C. Acetone

D. None of these

30 / 100

Category: Chemistry Ch 15 Class 12

The substance for the separation of isotopes is firstly converted into the

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

A) Neutral state

B) Free state

C) Vapour state

D) Charged state

31 / 100

Category: Chemistry Ch 8 Class 11

Buffer solution is a solution which resists change in?

Concentration

Number of moles

Rate of reaction

32 / 100

Category: Chemistry Ch 7 Class 11

During a chemical reaction, heat of Formation Is:

Evolved

Absorbed

Either Evolved or Absorbed

None of the above

33 / 100

Category: Chemistry

Q.107 When 1- Butene reacts with cold dilute KMnO4 in basic media, the product formed will be

A. 1,1-Butan-diol

B. 1,3-Butan-diol

C. But-1,2-diol

D. But-1,4-diol

34 / 100

Category: Chemistry Ch 11 Class 11

A certain chemical reaction follows the
following rate law:

Rate =K [A] [B]2 The order of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

35 / 100

Category: Chemistry Ch 9 Class 12

Alkaline KMnO4 converts ethylene into:

NUMS 2014
Chemistry
Hydrocarbons
Elimination Tool:

A) Methanol

B) Ethane

C) Ethanol

D) Ethylene glycol

36 / 100

Category: Chemistry Ch 6 Class 11

The common features, among the species CN, CO and NO are:

NUMS 2016
Chemistry
Chemical Bonding
Elimination Tool:

A) Bond order three and Isoelectronic

B) Bond order three and weak field ligands

C) Bond order two andπacceptors

D) Isoelectronic and weak field ligands

37 / 100

Category: Chemistry

Q.73 Unit for rate constant is s–1 for a reaction. Its order is

38 / 100

Category: Chemistry Ch 11 Class 12

Which of the following catalyst is used in the industrial preparation of methanol?

PreMedPK MDCAT Mock 5
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Zinc oxide and alumina

B) Alumina and silica

C) Silica and chromium oxide

D) Zinc oxide and chromium oxide

39 / 100

Category: Chemistry Ch 10 Class 12

Alcbhols react with aqueous acid to produce alkyl halides in presence of

ZnCl2

SO2

Pyridine

KOH

40 / 100

Category: Chemistry Ch 6 Class 11

The shape of SnCl2 is:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Linear

B) Tetrahedral

C) Angular

D) Trigonal Planar

41 / 100

Category: Chemistry Ch 1 Class 11

What is the percentage by mass of Nitrogen in NH4(NO3)?

40%

50%

35%

30%

42 / 100

Category: Chemistry Ch 1 Class 11

The efficiency of a chemical reactions can be checked by calculating ________ yield.

PMC Practice 30
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Percentage

B) Actual

C) Theoretical

D) All of these options are correct

43 / 100

Category: Chemistry Ch 5 Class 11

Which orbitals always possess same energy:

Hybrid orbitals

Degenerate orbitals

None of these

Both a and b

44 / 100

Category: Chemistry Ch 6 Class 12

Transition elements are colored in which type of compounds?

Ionic

Covalent

Both a and b

None of these

45 / 100

Category: Chemistry Ch 11 Class 12

The method which is used on an industrial scale for production of alcohol from alkene is:

PreMedPK MDCAT Mock 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Hydrohalogenation of alkenes

B) Dehydration of alkenes

C) Hydration of alkenes

D) Hydroxylation of alkenes

46 / 100

Category: Chemistry Ch 8 Class 11

A solution having pH = 0 is

Strongly basic

Weakly basic

Neutral

Strongly acidic

47 / 100

Category: Chemistry

Q.4 Melting and boiling point of transition elements are higher due to

A. Higher binding energies

B Strong metallic bonding

C. Hardness

D. All of these

48 / 100

Category: Chemistry Ch 2 Class 12

By heating 25g of limestone (CaCO3) , the weight of carbon dioxide produced is

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) 14 g

B) 71 g

C) 11 g

D) 2 g

49 / 100

Category: Chemistry

Which one of the following molecules has sp3 hybridization?

NUMS Mock 2
Chemistry
Chemical Bonding

A) CH4

B) C2H4

C) CO2

D) C2H2

50 / 100

Category: Chemistry Ch 1 Class 12

P2O5 is Hygroscopic powder which sublimes at:

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

A) 260 Degree Celsius

B) 360 Degree Celsius

C) 630 Degree Celsius

D) 690 Degree Celsius

51 / 100

Category: Chemistry

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called:

NUMS Mock 2
Chemistry
Fundamental Principles of Organic Chemistry

A) Functional isomers

B) Position isomers

C) Chain isomers

D) Metamers

52 / 100

Category: Chemistry Ch 5 Class 11

If uncertainty in the position of an electron is zero the uncertainty in its Momentum is?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

B) Zero

C) 2 x pi x r

D) >h/4pi

E) Infinite

53 / 100

Category: Chemistry Ch 14 Class 12

Proteins also contain _____ bonding.

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

A) Covalent

B) Ionic

C) Hydrogen

D) Metallic

54 / 100

Category: Chemistry Ch 13 Class 12

Carboxylic acids can be prepared by action of and carbon dioxide

Sodium hydroxide

Grignard's reagent

Alcoholic KOH

Alkaline KMn0.

55 / 100

Category: Chemistry

What type of chemical reaction is this?
CH3CHO + NH3 -> CH3CH(OH)NH2

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) Addition – elimination

B) Electrophilic addition

C) Free radical addition

D) Nucleophilic addition

56 / 100

Category: Chemistry

Stronger the oxidizing agent, higher is the:

NUMS Mock 2
Chemistry
Electrochemistry

A) Emf of cell

B) Oxidation potential

C) Reduction potential

D) Redox potential

57 / 100

Category: Chemistry

Q.130 First member of alkynes is called as______________-

A. Ethylene

B. Acetylene

C. Acetone

D. Ethene

58 / 100

Category: Chemistry

Which of the following will not undergo aldol condensation?

NUMS Mock 2
Chemistry
Aldehydes and Ketones

A) Acetaldehyde

B) Propanaldehyde

C) Benzaldehyde

D) Trideuteroacetaldehyde

59 / 100

Category: Chemistry Ch 7 Class 11

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps. This is known as:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) Henry's law

B) Hess's law.

C) Joule's principle

D) Dalton's law

60 / 100

Category: Chemistry Ch 10 Class 12

The only o, p−directing group which is deactivating in nature is:

NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) -NH2

B) -OH

C) -X (halogens)

D) -R (alkyl groups)

61 / 100

Category: Chemistry Ch 4 Class 11

Carbon dioxide is an Example of?

PMC Practice 4
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Ionic Solid

B) Metallic Solid

C) Molecular Solid

D) Covalent Solid

62 / 100

Category: Chemistry Ch 13 Class 12

An ester is prepared by:

NUMS 2014
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Two alcohols

B) Carboxylic acid and alcohol

C) Ketone and alcoho

D) Aldehyde and alcohol

63 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is least polarizable?

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Ne

B) He

C) X

D) Kr

64 / 100

Category: Chemistry Ch 3 Class 12

Burning of amorphous Boron in air forms

B(OH)3

B203

Mixture of B203& BN

65 / 100

Category: Chemistry Ch 11 Class 11

Which of the following statements best describes how a catalyst works

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) A catalyst changes the potential energies of the reactants and products

B) A catalyst decreases the temperature of the reaction which leads to a faster rate

C) A catalyst lowers the activation energy barrier for the reaction by providing a different reaction mechanism.

D) A catalyst raises the activation energy for the reaction which produces a faster rate

66 / 100

Category: Chemistry

H2 and O2 are diffusing under the same condition how much H2 gas will diffuse?

NUMS Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids

A) 4

B) 16

C) 32

D) 0.5

67 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is an insecticide?

PreMedPK MDCAT Mock 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) DDT

B) Teflon

C) Iodoform

D) Dynamite

68 / 100

Category: Chemistry Ch 3 Class 12

Which one of the following ions exhibits d-d transition and paramagnetism as well?

NTS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) MnO4-

B) CrO42-

C) MnO42-

D) Cr2O72-

69 / 100

Category: Chemistry Ch 6 Class 11

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) N2H5+

B) BaCl2

C) HCl

D) H2O

70 / 100

Category: Chemistry Ch 8 Class 11

In a exothermic process, forward direction reaction is favored by:

Increase in temperature

Decrease In temperature

) Increase and decrease repeatedly

None of these

71 / 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

72 / 100

Category: Chemistry Ch 14 Class 12

Left-handed helix in proteins secondary structure is called as ______ :

PMC Practice 4
Chemistry
Macromolecules
Elimination Tool:

A) Alpha helix

B) Beta helix

C) Spiral

D) Concentrate

73 / 100

Category: Chemistry Ch 11 Class 11

The study of rates of chemical reactions and the factors that affect the rates of chemical reactions is known as:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Thermodynamics

B) Stoichiometry

C) Electrochemistry

D) Chemical Kinetics

74 / 100

Category: Chemistry Ch 9 Class 11

The number of moles of solute dissolved per liter of solution is called:

NTS 2012
Chemistry
Solution and Colloids
Elimination Tool:

A) Normality

B) Molality

C) Mole fraction

D) Molarity

75 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is the highest oxidizing agent?

Cl2

Br2

76 / 100

Category: Chemistry Ch 11 Class 12

Phenol Acts as

Mild agent

Reducing agent

Oxidizing agent

All of the above

77 / 100

Category: Chemistry Ch 9 Class 12

Which of the following gases is used for welding purpose:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) ethene

B) ethane

C) propane

D) ethyne

78 / 100

Category: Chemistry

Q.119 Caustic Soda is made by electrolysis of concentrated solution of NaCI in

A. Nelson's Cell

B. Hg-Cell

C. Castner Kellner Cell

D. All of these

79 / 100

Category: Chemistry

Q.5 Allotropes are of same

A. Compounds

B. Molecules

C. Ions

D. Element

80 / 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

81 / 100

Category: Chemistry Ch 3 Class 12

The transition element which does not show variable valency is:

PMC 2020
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu

B) Sc

C) Zn

D) Cr

82 / 100

Category: Chemistry

Q.120 Which of the following has six isotopes

A. Palladium

B Tin

C. Cadmium

D. Carbon

83 / 100

Category: Chemistry Ch 14 Class 12

Which is the structure of polyvinyl chloride (polychloroethane)?

UHS 2018
Chemistry
Macromolecules
Elimination Tool:

A) -[CCl2-CCl2]-

B) -[HCCl-CH-Cl]-

C) [H2C=CH-Cl]

D) -[H2C-CH-Cl]-

84 / 100

Category: Chemistry

Aromatic compounds burn with a sooty flame because:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) They are resistant to react with oxygen

B) They have a cyclic structure

C) They have a high percentage of Carbon

D) They have a high percentage of hydrogen

85 / 100

Category: Chemistry Ch 2 Class 12

Strontium lies between calcium and barium in Group II A in the Periodic Table. Which of the properties could be predicted for strontium?

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

A) It forms a water-soluble carbonate that does not decompose on heating.

B) It forms a sparingly soluble sulfate

C) It forms a nitrate which decomposes on heating to form strontium nitrite and oxygen.

D) It is reduced by cold water, liberating hydrogen.

86 / 100

Category: Chemistry

Q.1 The carbonyl compound which is attached with at least one H atom at one side is called as ?

A. Ketones

B. Aldehydes

C. Ethers

D. Alkyl halides

87 / 100

Category: Chemistry Ch 9 Class 11

Human blood maintains its pH between

UHS 2016
Chemistry
Solution and Colloids
Elimination Tool:

A) 6.50 – 7.00

B) 7.20 – 7.25

C) 7.50 – 7.55

D) 7.35 – 7.40

88 / 100

Category: Chemistry

Which of the following atoms would be diamagnetic?

89 / 100

Category: Chemistry

Q.82 The oxidation number of ‘P’ in HPO3 is

A. +3

B. +5

C. +1

D. –3

90 / 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]

91 / 100

Category: Chemistry Ch 5 Class 12

Percentage of Chlorine present In bleaching powder Is:

5-10

20-25

35- 40

92 / 100

Category: Chemistry Ch 5 Class 12

Which of the following halogen does not form stable oxyacids?

93 / 100

Category: Chemistry Ch 9 Class 12

Boiling point of benzene is:

70.3

80.1

133

79.41

94 / 100

Category: Chemistry Ch 14 Class 12

Ethylene is a monomer of polyethylene that is widely used as raw material for manufacturing plastics. It can be polymerized into two different classes: HDPE and LDPE. The following choices are the differences of HDPE and LDPE except:

NUMS 2019 Cancelled
Chemistry
Macromolecules
Elimination Tool:

A) The density

B) The branching of ethylene

C) Reaction conditions

D) Type of polymerization

95 / 100

Category: Chemistry Ch 4 Class 11

Which of the following is not a property of liquid?

Random movement of molecule

Molecules have the same position with respect to one another

Takes shape of the container

Are less common than solids and gases

96 / 100

Category: Chemistry

Q.106 +G108 The Markownikof’s rule is applicable only on

A. 2-Butene

B. 2-Bromo-3-chloro-2-butene

C. 2,3-Dimethyl-2-butene

D. 2-Methyl-2-butene

97 / 100

Category: Chemistry Ch 10 Class 12

atalyst used in the preparation of alkyl halide from alcohol

Platinum/charcoal

LiH4

Rock salt

ZnCl2

98 / 100

Category: Chemistry Ch 14 Class 12

Activator of phosphatase enzyme is _________.

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

A) Mn2+

B) Mg2+

C) Zn2+

D) None of these options is correct

99 / 100

Category: Chemistry

Q.19 Graphite has a structural similarity with

A. B2H6

B. B4C

C.B

D. BN

100 / 100

Category: Chemistry Ch 10 Class 12

NH3 (amine) is an example of:

NTS 2015 DUHS and JSMU
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Negative ligand

B) Anionic ligand

C) Neutral ligand

D) Organic ligand

Your score is

The average score is 55%

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