Chemistry Practice Tests 3

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Chemistry Practice Test 3

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1 / 100

Category: Chemistry Ch 14 Class 12

Purification of bauxite whose major impurity Is silica (SiO2) is carried out through:

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

A) Baeyer’s Method

B) Hall’s Method

C) Serpek’s Method

D) Contact Method

2 / 100

Category: Chemistry

The rate of a reaction in general can be increased by all the following factors except:

NUMS Mock 2
Chemistry
Reaction Kinetics

A) By increasing temperature

B) Using a suitable catalyst

C) By an increase in activation energy

D) By increasing conc. Of reactants

3 / 100

Category: Chemistry Ch 1 Class 11

It is the fact that 22.414 cm3 of any gas has a different masses but the same number of

PMC Practice 27
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Atoms

B) Particles

C) Molecules

D) None of these

4 / 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

5 / 100

Category: Chemistry Ch 12 Class 12

Methyl ketones can be characterized by performing:

NUMS 2018
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Iodoform test

B) Schiff’s test

C) Benedict’s reagent test

D) Tollen’s test

6 / 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

7 / 100

Category: Chemistry Ch 2 Class 12

What is the chemical formula of Epsom Salt?

MgSO4.7H20

MgCO3

MgCO3.CaCO3

Mg(SiO3)4

8 / 100

Category: Chemistry Ch 4 Class 12

Hardness of transition metals is due to ______?

PMC Practice 6
Chemistry
d and f Block Elements
Elimination Tool:

A) More melting point

B) More electrons

C) Variable oxidation state

D) Higher binding energies

9 / 100

Category: Chemistry Ch 2 Class 12

Which one of these reacts rapidly with water at room temperature?

Na

Fe

Al

Ca

10 / 100

Category: Chemistry Ch 4 Class 12

Which transition metal is used the most in industries?

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

A) Fe

B) Mg

C) Ca

D) C

11 / 100

Category: Chemistry Ch 13 Class 12

Vinegar is basically acid:

Acetic

Citrus

Formic

Butyric

12 / 100

Category: Chemistry Ch 1 Class 12

Covalent hydrides are:

Gaseous

Solid

Liquids

Both a & c

13 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has maximum Hydration power?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Na+

B) K+

C) Be2+

D) Ca+2

14 / 100

Category: Chemistry

Name the orbital n = 5; l = 2; m = 0.

NUMS Mock 1
Chemistry
Atomic Structure

A) 5p

B) 5d

C) 5s

D) 5f

15 / 100

Category: Chemistry

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

NUMS Mock 3
Chemistry
Chemical Bonding

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

16 / 100

Category: Chemistry Ch 13 Class 12

Which of the following reagents will reduce butanoic acid to butanol?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) LiAlH4

B) LiAlH4.H2O

C) Mg(BH4)2

D) All of the above

17 / 100

Category: Chemistry Ch 15 Class 12

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

A) Destructive distillation

B) Fractional distillation

C) Vacuum distillation

D) Distillation

18 / 100

Category: Chemistry Ch 11 Class 11

The unit of rate of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

A) Mole (dm3) sec

B) Mole (dm3) sec-1

C) Mole(dm-3) sec -1

D) Mole(dm3)sec-2

19 / 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

20 / 100

Category: Chemistry Ch 11 Class 12

The test used to distinguish among primary, secondary, and tertiary alcohols is:

NUMS 2017
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) 2,4 – DNPH test

B) Tollens test

C) Lucas Test

D) Fehling solution test

21 / 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.

22 / 100

Category: Chemistry Ch 2 Class 12

________ are prepared by passing hydrogen gas over hot alkali metals or alkaline earth metals?

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

A) Covalent hydrides

B) Ionic hydrides

C) Borderline hydrides

D) Metallic hydrides

23 / 100

Category: Chemistry Ch 7 Class 11

The heat of a reaction can be calculated by using:

NTS 2010
Chemistry
Thermochemistry
Elimination Tool:

A) Joule's Law

B) Ohm's Law

C) Hess's Law

D) Faraday's Law

24 / 100

Category: Chemistry Ch 6 Class 12

Which element of 5th group doesn’t have unpaired valence electrons in d-sub shell?

V

Nb

Ta

La

25 / 100

Category: Chemistry Ch 10 Class 11

Oxidation is defined as:

) loss of electron

Gain of electron

Gain of oxygen

Both a and c

26 / 100

Category: Chemistry Ch 5 Class 11

The amount of energy associated with quantum of radiation is directly proportional to:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) Photon

B) Wavelength

C) Frequency

D) Velocity

27 / 100

Category: Chemistry Ch 4 Class 12

Au3+ has __________ configuration.

PMC Practice 5
Chemistry
d and f Block Elements
Elimination Tool:

A) 5d7

B) 4d9

C) 5d8

D) 5d10

28 / 100

Category: Chemistry Ch 8 Class 11

Buffer solution is a solution which resists change in?

pH

Concentration

Number of moles

Rate of reaction

29 / 100

Category: Chemistry

Which one of the following is not an isotope of hydrogen:

NUMS Mock 2
Chemistry
Atomic Structure

A) Deuterium

B) Tritium

C) Ortho hydrogen

D) None of these

30 / 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

31 / 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

32 / 100

Category: Chemistry Ch 2 Class 11

What volume in dm3 of KCl is obtained in the following equation if the volume of KCIO3 at the beginning of the reaction is 20 dm3?

2KClO3 -> 2KCl + 3O2

NTS 2016 DUHS & JSMU
Chemistry
Stoichiometry
Elimination Tool:

B) 74.5 dm3

C) 50 dm3

D) 40 dm3

E) 20 dm3

33 / 100

Category: Chemistry

Both ionic and covalent bonds are present in:

NUMS Mock 3
Chemistry
Chemical Bonding

A) CH4

B) SO2

C) KCl

D) NaOH

34 / 100

Category: Chemistry

Q.121 Ka (Cu(CN)4) which one is correct

A. Potassium tetra cyano recuperate

B. Coordination numbers 2

C The ligand is positively charged

D.Central atom is present in the avionic sphere

35 / 100

Category: Chemistry Ch 14 Class 12

Which of the following can he used as a source of energy

Lipids

Carbohydrates

Both a and b

None of these

36 / 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

37 / 100

Category: Chemistry

Which of the following reagents will reduce butanoic acid to butanol?

NUMS Mock 1
Chemistry
Carboxylic Acids and its Derivatives

A) LiAlH4

B) LiAlH4.H2O

C) Mg(BH4)2

D) All of the above

38 / 100

Category: Chemistry Ch 8 Class 11

Which of the following has the highest value of pKa?

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) CH3- CH2OH

B) CI – CH2- CH2OH

C) F3C – CH2- OH

D) CH3- CH(CH3) – CH2OH

39 / 100

Category: Chemistry Ch 1 Class 12

11) Hydrogen has properties similar to:

Alkali metals

Halogens

Both a and b

None of these

40 / 100

Category: Chemistry Ch 2 Class 11

Which of the following is the chemical formula of a compound indicating the relative number of atoms in the simplest ratio?

NTS 2016 SMBBMC
Chemistry
Stoichiometry
Elimination Tool:

A) Empirical formula

B) Empirical formula mass

C) Molecular formula

D) Molecular mass

41 / 100

Category: Chemistry Ch 14 Class 12

_____ is a macromolecule found in blood.

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

A) Hemoglobin

B) Plasma

C) Creatinine

D) Plasmids

42 / 100

Category: Chemistry Ch 6 Class 11

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Elimination Tool:

A) Ammonia

B) Ammonium hydroxide

C) Hydrochloric acid

D) Water

43 / 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

44 / 100

Category: Chemistry

Q.86 Al powder heated in steam produces Al2O3 and

A. N2

B. H2

C. O2

D. Cl2

45 / 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

46 / 100

Category: Chemistry

Q.129 The biochemical process used in the synthesis of alcohol in the presence of yeast is called as____________________?.

A. Respiration

B. Photosynthesis

C. Fermentation

D. Aerobic respiration

47 / 100

Category: Chemistry Ch 10 Class 11

Standard Electrode Potential is measured at temperature:

348K

298K

20K

235K

48 / 100

Category: Chemistry Ch 11 Class 12

Boiling point of Ethyl Alcohol is?

20.2 C

100 C

80.1 C

78.3 C

49 / 100

Category: Chemistry Ch 12 Class 12

Which one of the following is used in making lozenges?

Methanol

Acetaldehyde

Acetone

Formaldehyde

50 / 100

Category: Chemistry

Q.115 Alcohols can be oxidized to aldehyde and ketone by warming with acidified potassium dichromate. Which among of the following alcohols resists to this change

A. (CH3)2 CH CH2OH

B. CH3 CH2 CH(CH3) OH

C. (CH3)3 COH

D. C6H3 CH2 OH

51 / 100

Category: Chemistry Ch 14 Class 12

For which mechanism the first step involved is the same?

NTS 2016 DUHS & JSMU
Chemistry
Macromolecules
Elimination Tool:

A) E1 and E2

B) SN1 and E2

C) E1 and SN2

D) E1 and SN1

52 / 100

Category: Chemistry

Down the group acid-base behaviour of metallic oxides of group 2 elements changes to:

NUMS Mock 2
Chemistry
s and p Block Elements

A) More basic

B) No change

C) Less basic

D) More acidic

53 / 100

Category: Chemistry

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

0

1

2

3

54 / 100

Category: Chemistry Ch 6 Class 11

sp3 hybridization in CH4 gives it ______ geometry.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) linear

B) coplanar

C) tetrahedral

D) octahedral

55 / 100

Category: Chemistry Ch 7 Class 11

Thermochemistry is very important to learn about

PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:

A) Chemical Equilibrium

B) Chemical Bonding

C) Heat contents of a compound

D) All of these

56 / 100

Category: Chemistry Ch 2 Class 11

Which of the following can ba employed instead of filter papers?

Gooch Crucible

Sintered Glass Crucible

Both a and b

None of these

57 / 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

58 / 100

Category: Chemistry

Q.99 The ionic compound with the highest lattice energy is

A. NaF

B. NaCl

C. NaBr

D. NaI

59 / 100

Category: Chemistry

Q.102 The hetero atom present in furan is

A. O

B. N

C. S

D. Cl

60 / 100

Category: Chemistry

Q.91 The half-ire of Uranium i

A. 700 Millon years

B.706 Million years

C 89 days

D. 710 million year

61 / 100

Category: Chemistry Ch 9 Class 11

The value of surface tension of isopropyl alcohol is?

NUMS 2017
Chemistry
Solution and Colloids
Elimination Tool:

A) Less than water

B) Less than ethylene glycol

C) less than methyl alcohol

D) same as ethyl alcohol

62 / 100

Category: Chemistry Ch 2 Class 12

Which of the following elements has the highest boiling point?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Li

B) Mg

C) Sr

D) Be

63 / 100

Category: Chemistry Ch 6 Class 11

H2O has a higher boiling point than HF because:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) H2O is more polar than HF

B) H2O can form more hydrogen bonds

C) H2O has higher molecular weight

D) H2O has more atoms

64 / 100

Category: Chemistry

A system at equilibrium can be disturbed by:

NUMS Mock 4
Chemistry
Chemical Equilibrium

A) Concentration change

B) Pressure change

C) Temperature

D) All of the above

65 / 100

Category: Chemistry

The value of surface tension of isopropyl alcohol is?

NUMS Mock 2
Chemistry
Chemical Bonding

A) Less than water

B) Less than ethylene glycol

C) less than methyl alcohol

D) same as ethyl alcohol

66 / 100

Category: Chemistry Ch 11 Class 12

Either Is dangerous In which of the following states?

Humid

Wet

dry

Hot

67 / 100

Category: Chemistry Ch 8 Class 11

When the number of moles of reactants and products are equal in reversible reactions which parameter would not affect at equilibrium?

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Temperature

B) Pressure

C) Volume

D) Catalyst

68 / 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

69 / 100

Category: Chemistry Ch 13 Class 12

In the case of HOCH2CH2CH2COOH, from where is numbering started?

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

A) OH group is given number 1 position

B) Carboxylic acid is given number 1 position

C) COOH is given number 3 position

D) COOH is given number 4 position

70 / 100

Category: Chemistry Ch 14 Class 12

How many types of polymers are there based on their natures?

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

A) 5

B) 4

C) 2

D) 3

71 / 100

Category: Chemistry Ch 8 Class 12

Which one of the organic compounds Is the most reactive?

Alkane

Alkyne

Alkene

Nome

72 / 100

Category: Chemistry Ch 3 Class 11

Which of the following pairs of gases have same rate of diffusion:

NTS 2017
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) CO2 and N2O

B) CO2 and CO

C) NO2 and CO2

D) CO2 and N2O4

73 / 100

Category: Chemistry

Maleic Acid and Fumaric Acid are:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) Cis-Trans isomers

B) chain isomers

C) position isomers

D) metamers

74 / 100

Category: Chemistry Ch 9 Class 12

Fuels with higher octane number can be produced by ___________.

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Cracking

B) Reforming

C) Decomposition

D) Isomerisation

75 / 100

Category: Chemistry Ch 1 Class 12

The formula of washing soda is:

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

A) N2CO3

B) Na2CO3 . H2O

C) Na2CO3 . 7H2O

D) Na2CO3 . 10 H2O

76 / 100

Category: Chemistry Ch 8 Class 11

Purification of table salt (NaCl) by passing HCl gas through its saturated aqueous solution is an example of:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Law of mass action

B) Hess’s law

C) Common ion effect

D) Henry’s law

77 / 100

Category: Chemistry

AgCI is in water.

Partially soluble b)

Completely soluble

Not soluble

None of these

78 / 100

Category: Chemistry Ch 7 Class 11

Which of following is NOT state variable of thermodynamics?

Entropy

Internal energy

Volume

Density

79 / 100

Category: Chemistry Ch 1 Class 11

Solution contains 85.5 g of sucrose (C12H22O11) in 250 cm3. What is its molarity?

UHS 2019
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1 M

B) 0.5 M

C) 0.25 M

D) 2 M

80 / 100

Category: Chemistry Ch 2 Class 11

106 gram of Na2CO3 per dm3 of the solution of Na2CO3 in water, the concentration of the solution will be:

NTS 2018
Chemistry
Stoichiometry
Elimination Tool:

A) 1N

B) 0.1 M

C) 1M

D) 0.02M

81 / 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

82 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has a lone pair of electrons on the central atom?

PCI3

NH4

PCI

CH4

83 / 100

Category: Chemistry

Which type of reaction takes place when a carbonyl compound is treated with a mixture of NaCN and an acid?

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) Electrophilic addition reaction

B) Substitution reaction

C) Nucleophilic addition reaction

D) Displacement reaction

84 / 100

Category: Chemistry Ch 5 Class 12

Percentage of Chlorine present In bleaching powder Is:

5-10

20-25

35- 40

90

85 / 100

Category: Chemistry

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

A) Its path is circular in a plane perpendicular to the plane of magnetic field

B) The speed and kinetic energy of the particle remains constant

C) The velocity and momentum of the particle changes only in direction

D) The time period of revolution and angular frequency of revolution is independent of the velocity of the particle and radius of the circular path

86 / 100

Category: Chemistry Ch 8 Class 11

a

b

c

d

87 / 100

Category: Chemistry

Strongest acid among the following is:

NUMS Mock 3
Chemistry
Carboxylic Acids and its Derivatives

A) HCOOH

B) CH3COOH

C) (CH3)2 CHCOOH

D) (CH3)3CCOOH

88 / 100

Category: Chemistry Ch 16 Class 12

The best yield of 502 can be obtained by which of the following:

Burning of coal

Excess of oxygen

Fertilization

Oxides of pyrites

89 / 100

Category: Chemistry Ch 8 Class 12

Benzene can be prepared from:

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

A) From Petroleum

B) From Coal

C) From Acetylene

D) From Phenol

E) Al of these

90 / 100

Category: Chemistry Ch 3 Class 12

The octahedral geometry of the complex [Co(NH3)6]2+ has hybridization:

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
Elimination Tool:

A) Sp3d

B) Spd6

C) Sp3d2

D) Sp2d3

91 / 100

Category: Chemistry Ch 13 Class 12

The formula of esters is

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

A) R – COOH

B) R – COR

C) R – COOR

D) R – COH

92 / 100

Category: Chemistry

Free Nitrogen and Oxygen are present in atmosphere but they do not react with each other under normal conditions because:

NUMS Mock 3
Chemistry

A) Nitrogen requires a catalyst

B) Oxygen is very inactive

C) Oxygen is found in less concentration

D) Nitrogen is highly inactive gas

93 / 100

Category: Chemistry Ch 9 Class 11

If NaCl produced in the equation:

FeCl3+ NaOH → Fe(OH)3 + NaCl

175.5 g of NaCl was dissolved in water to make a liter of solution, the molarity would be:

NTS 2010
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.1 M

B) 3 M

C) 8 M

D) 12 M

94 / 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

95 / 100

Category: Chemistry Ch 4 Class 12

Which of the following has allotropic forms:

Oxygen

Sulphur

Both

None of these

96 / 100

Category: Chemistry Ch 1 Class 11

One mole of substance at STP has:

PMC 2021 Tested
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 2.24 dm³

B) 24.4 dm³

C) 2.44 dm³

D) 22.4 dm³

97 / 100

Category: Chemistry Ch 15 Class 12

The essential property of a fertilizer is that is should be:

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) Immiscible

B) Highly soluble

C) Insoluble

D) Partially soluble

98 / 100

Category: Chemistry Ch 9 Class 11

Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10-6. What’ll be its solubility:

UHS 2017 Reconduct
Chemistry
Solution and Colloids
Elimination Tool:

A) 2.75 x 10-2

B) 2.75 x 102

C) 1.17 x 10-2

D) 3.63 x 103

99 / 100

Category: Chemistry Ch 10 Class 12

Grignard reagent when added to dry ice gives:

Primary Alcohol

Alkyl Halide

Tertiary Alcohol

Carboxylic Acid

100 / 100

Category: Chemistry Ch 12 Class 12

The general formula for an aldehyde is:

NTS 2010
Chemistry
Aldehydes and Ketones
Elimination Tool:

B) R-COOH

C) R-CO-R

D) R-X

E) R-CHO

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