Chemistry

Organic Chemistry Fundamentals

287 Questions

Organic chemistry fundamentals cover the structure, properties, and reactions of carbon containing compounds. The questions explore functional groups, isomerism, homologous series, and basic reaction mechanisms. This forms the basis of general chemistry across multiple examination formats.

Functional groupsIsomerism typesHomologous seriesCycloalkanesOrganic monomers

Organic Chemistry Fundamentals Questions

Multiple choice

Azeotropes are of

  1. two types

  2. three types

  3. four types

  4. five types
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

ANS  1.

Multiple choice

Ethylene forms ___________.

  1. single bond

  2. one sigma bond and one pi bond

  3. double bond

  4. both 2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ethylene form double bond which is one sigma and one pi bond.

Multiple choice

Which is the chemical which gives the smell to flowers?

  1. Amber

  2. Ester

  3. Adverts

  4. None

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Esters are organic compounds responsible for the sweet and fruity fragrances found in many flowers and fruits. They are widely used in the perfume industry to replicate natural scents. Other options like Amber are specific scents or substances, not the general class of chemicals responsible for floral smells.

Multiple choice

Which of these statements is/are correct about operational classification of amino acids based on optical activity?

  1. Dextrorotatory rotate the plane of plane-polarised light clockwise.
  2. Levorotatory rotate the plane of plane-polarised light anticlockwise
  3. Dextrorotatory and levorotatory molecules are assigned negative and positive values, respectively.

  1. Only 1

  2. Only 2

  3. Only 3

  4. Only 1 and 2

  5. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, statement 1 and 2 are correct.

Multiple choice

Which of the following statements is/are true? A. 1-chloro-2, 3-pentadiene has no chiral carbon atoms, yet it is a chiral molecule. B. A newly discovered compound is thought to be chiral, but shows no rotation in a specific solvent. Hence, the compound is assuredly achiral. C. When a chiral molecule reacts to give a chiral molecule, the product is always racemic.

  1. Only A

  2. Only B

  3. Only C

  4. Both A and C

  5. Both B and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This statement is true.

Multiple choice

Linkage isomerism will be shown by which of the following?

i. SO32- ii. NO2- iii. SCN−

  1. Only 1

  2. Only 2

  3. Only 1 and 3

  4. Only 2 and 3

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All the three given ligands will show linkage isomerism. The sulphito group (SO32-), an ambidentate ligand, can be coordinated to metal ions through either the oxygen or the sulphur. So, it will show linkage isomerism. NO2- is an ambidentate ligand. It can attach at either the nitrogen atom or the oxygen atom. Hence, it will show linkage isomerism. SCN− is an ambidentate ligand. Since it can attach at either the sulphur atom or the nitrogen atom, it will show linkage isomerism.