Organic Chemistry Online Test | Quiz

Here is the complete list of test quizzes on Organic Chemistry.

1. In a reaction, 2A₂ + B₂ → 2A₂B, when the reactant A will disappear?

double the rate that A2B will form

the same rate that B will decrease

twice the rate that B will decrease

half the rate that B will decrease

Question 1 of 50

2. What will be the product in the given reaction?

o-hydroxytoluene and p-hydroxytoluene

m-chlorophenol

m-hydroxytoluene

o-chlorophenol and p-chlorophenol

Question 2 of 50

3. What will be the compound A which can be used to carry out this synthesis of glycol?

RCHO

RCOOH

RCOR’

RCO₂OH

Question 3 of 50

4. Secondary alcohols on catalytic dehydrogenation by Cu-Ni couple gives ___________

Aldehyde

Carboxylic acid

Amine

Ketone

Question 4 of 50

5. What is the major organic product obtained from the following reaction?

1-butene

2-butene

2-methyl-1-propanol

2-methylpropene

Question 5 of 50

6. Which of the following is also known as model cement?

Isopropyl acetone

Cyclopropenone

butanone

Methyl ethyl ketone

Question 6 of 50

7. Which among the following is true about enantiomerism?

Assignments of R and S labels and (+) and (–) labels are not connected

The specific rotation of enantiomers is equal and opposite

The labels R and S refer to different conformers

The labels (+) and (–) are used to distinguish enantiomers

Question 7 of 50

8. What will be the product when ethylene glycol and terephthalic acid reacts?

The product when ethylene glycol & terephthalic acid reacts - option b

The product when ethylene glycol & terephthalic acid reacts - option d

The product when ethylene glycol & terephthalic acid reacts - option a

The product when ethylene glycol & terephthalic acid reacts - option c

Question 8 of 50

9. Electrophilic substitution of aniline with bromine in presence of gacial acetic acid gives which of the following?

1, 4, 6-tribromo aniline

2, 4, 6-tribromo aniline

3-bromo aniline

4-bromo aniline

Question 9 of 50

10. Which of the following reagent can’t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis?

Silver or platinum-based catalyst

Copper catalyst

Nickel based catalyst

Vanadium oxide

Question 10 of 50

11. Which of the following statement (s) is/are true about the following eliminations?

(1) Hoffmann product is major product in I (2) Saytzeff product is major product in I (3) Hoffmann product is major product in II (4) Saytzeffproduct is major product in II

1 and 4

2 and 3

3 and 4

1 and 2

Question 11 of 50

12. Cycloalkene exhibits aromatic character.

False

True

Question 12 of 50

13. When an organic compound was treated with sodium nitrite and hydrochloric acid in the ice cold, nitrogen gas was evolved copiously. What is the compound?

A primary amine

An aromatic primary amine

An aliphatic primary amine

A nitrocompound

Question 13 of 50

14. What is the name for polymers with Z groups only on one side of the carbon chain?

Syndiotactic

Isotactic

Atactic

Enatiometric

Question 14 of 50

15. Which of the following nitrogenous base is not present in RNA?

guanine

adenine

cytosine

thymine

Question 15 of 50

16. Primary alcohols undergo what reaction to form alkenes?

Hydrolysis

Elimination

Oxidation

Reduction

Question 16 of 50

17. What is the correct order of acidic strength?

II > III > I

I > II > III

I > III > II

III > II > I

Question 17 of 50

18. What will be the product for the given reaction?

The product for the given reaction adjacent carbonyl group - option d

The product for the given reaction adjacent carbonyl group - option c

The product for the given reaction adjacent carbonyl group - option b

The product for the given reaction adjacent carbonyl group - option a

Question 18 of 50

19. Identify the correct statement which is related to aromatic hydrocarbon?

It has only sigma bonds

It has only pi bonds

It has a sigma and delocalized pi bond

It has a sigma and two pi bonds

Question 19 of 50

20. Benzophenone does not react with which of the following compound?

SO₃

RNH₂

NaOH

Na₂CO₃

Question 20 of 50

21. When chloroform reacts with ethyl amine in presence of alcoholic KOH, the compound formed is which of the following?

An amide

Formic acid

Ethyl cyanide

Ethyl isocyanide

Question 21 of 50

22. The amine which can react with C₆H₅−SO₂−Cl to form a product insoluble in alkali shall be, is which of the following?

Secondary amine

Tertiary amine

Primary amine

Both primary and secondary amines

Question 22 of 50

23. Which of the following is the neutral complex which follows the 18- electron rule?

(η⁵-C₅H₅)Fe(CO)₂

(η⁵-C₅H₅)₂Co

(η⁵-C₅H₅)2Mo(CO)₃

(η⁵-C₅H₅)2Re(η⁶-C₆H₆)

Question 23 of 50

24. How many moles of KCI are required to produce 10 mol Cl₂ by the reaction with KCIO₃?

1.66 mole

16.66 mole

13.33 mole

0.66 mole

Question 24 of 50

25. Which of the following is the definition for enatiomerism?

A pair of stereoisomers each of which has two chirality centres

Any pair of stereoisomers

A pair of stereoisomers that are not mirror images of one another

A pair of stereoisomers that are non-superimposable mirror images of one another

Question 25 of 50

26. Select the incorrect statement.

Two sigma bonds make up a double bond

A resonance may sometimes cause sp3 atoms to become sp2 hybridized

One lone pair will be counted as two pi electrons according to Huckel's equation

Delocalizing one lone pair causes aromaticity

Question 26 of 50

27. Resonance forms are in equilibrium with each other.

True

False

Question 27 of 50

28. Which of the following reactants can be used to carry out following reaction?

conc. HNO₃ + conc. H₂SO₄

HCl + CO + AlCl₃

conc. H₂SO₄ + Oleum

anhydrous AlCl₃ + Ph-NO₂

Question 28 of 50

29. Identify the one which shows E-Z mechanism?

Methyl-3-pent-2-ene

3-methylpent-2-ene

2-methylpent-2-ene

2,3-methylpentene

Question 29 of 50

30. Select the correct statement about the reagent 6M HNO₃.

It forms NH₃ complexes

It forms hydroxo complexes

It destroys hydroxo and ammonia complexes

It decreases the H+ ion concentration

Question 30 of 50

31. Which of the following compound exhibit tautomerism?

I and II

Neither I nor II

Question 31 of 50

32. Which among the following is not a class of organic compound?

Electro compounds

Carbonyl compound

Amides

Nitro compound

Question 32 of 50

33. If a solution of a compound (30.0 g/100 mL of solution) has a measured rotation of +15° in a 2 dm tube, what is the specific rotation?

+15°

+50°

+25°

+7.5°

Question 33 of 50

34. Which of the following is the most convenient and inexpensive method of formation of glycol?

Hydroxylation of alkene by Bayer’s reagent

From 1,2-dibromoethane

Oxidation of ethylene and using Ag as catalyst

Ethylene treatment with HOCl

Question 34 of 50

35. What is the product when thiophene reacts with Br2 in benzene?

2,5-dibromothiophene

3,4-dibromothiophene

3-bromothiophene

2-bromothiophene

Question 35 of 50

36. Which of the following compound(s) is/are chiral?

Only B and C

Only B

Only A

Only A and B

Question 36 of 50

37. Which of the following is the definition of chirality?

A molecule with a mirror image

The non-superimposability an object on its mirror image

The superimposability of an object on its mirror image

A molecule that has a carbon atom with four different substituents

Question 37 of 50

38. What will be the attacking electrophile in this reaction?

Carbanion

Transition state

Halonium

Radical

Question 38 of 50

39. The below reaction is called as which of the following name reaction?

Clemenson's reduction

Kolbe's reaction

Koch reaction

Wurtz reactions

Question 39 of 50

40. What is the correct order of acidic strength?

I > III > II

III > II > I

I > II > III

II > I > III

Question 40 of 50

41. What is the smell of the diethyl ether?

Rotten egg

Sweet smell

Fish like smell

Vinegar

Question 41 of 50

42. What is the concentration of H₂O₂ solution of 20 ml of H₂O₂ solution which will react completely with 10 ml of 2 M KMnO₄ in acidic medium?

2.5 M

25 M

5 M

1.25 M

Question 42 of 50

43. Arrange the following intermediate into decreasing order of stability.

II > III > IV > I

III > IV > II > I

I > III > IV > II

I > III > II > IV

Question 43 of 50

44. Fries rearrangement reaction of phenol ester leads to the formation which type of product?

Alkene

Alcohol

Aldehyde

Ketone

Question 44 of 50

45. The relative rates of nucleophilic substitution for the given substrates are as follows:

Compound	Approx. Relative rate
CH₃CH₂Br	1.0
CH₃CH₂CH₂Br	0.28
(CH₃)₂CHCH₂Br	0.030
(CH₃)₃ CCH₂Br	0.00000042

Which of the following statement is correct?

There is no role of “steric factor”

Each of the above reactions is likely to be S_N1

First two reactions follow S_N2 and next two reactions follow SN1 pathway

Each of the above reactions is likely to be S_N2

Question 45 of 50

46. Nitroso amines (R₂N−N=O) are soluble in water. On heating them with concentrated H₂SO₄ they give secondary amines. What is this reaction called as?

Fittig's reaction

Sandmeyer's reaction

Perkin's reaction

Liebermann's nitroso reaction

Question 46 of 50

47. Which among the following catalyst increases the rate of the reaction?

Calcium hydroxide

Calcium chloride

Calcium carbonate

Calcium sulphate

Question 47 of 50

48. A nucleotide is formed of which of the following units?

nitrogen base and phosphate

nitrogen base and sugar

nitrogen base, sugar and phosphate

sugar and phosphate

Question 48 of 50

49. Separation of ions in mass spectrometer take place on the basis of which of the following?

Charge

Mass

Molecular weight

Mass to charge ratio

Question 49 of 50

50. In keto-enol from presence of which type of hydrogen is must?

Gamma

Any position of hydrogen

Beta

Alpha

Question 50 of 50

Topic wise Test Quizzes on Organic Chemistry

Organic Chemistry tests, quizzes, and exams are great ways to learn and test your Organic Chemistry skills. Whether you’re a beginner or experienced, challenge and boost your confidence with our engaging online quizzes on Hydrocarbon, Organic Compound, Organic Reaction Mechanism, Spectroscopy, Alcohols and Phenols, Carboxylic Acid, Amines, Stereochemistry, Macromolecule and Polymerisation. Start the Organic Chemistry online test now!

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Organic Chemistry Certification Test

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Level 1 to 10 Tests:
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Total Questions: 50, Total Time: 1 hour, Correct Answer: 2 points, Wrong Answer: -1 point

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Total Questions: 50, Total Time: 1 hour, Correct Answer: 2 points, Wrong Answer: -1 point

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