Organic Chemistry Some Basic Principles and Techniques - Online Test

Q1. Change in hybridisation affects the carbon’s and the organic compound’s
Answer : Option D
Explaination / Solution:

in hybridization as % of 's'character increases electronegativity also increases.

more the s charater, more will be the electronegativity of that atom.

increasing order ofelectronegativity  with %s character is sp (50%) >  sp2(33.33%) >  sp3(25%)


Q2. Condense the following complete structural formula given below. Choose the appropriate answer given below

Answer : Option B
Explaination / Solution:

All the single bonds are broken and atoms are written together.

Q3. Which of the following is the correct IUPAC name?
Answer : Option A
Explaination / Solution:

While writing IUPAC name, alkyl groups are written in alphabetical order. thus lower locant 3 is assigned to ethyl. prefix di, tri or tetra are not included in alphabetical order

Q4. Write the state of hybridisation of carbon in .
Answer : Option A
Explaination / Solution:

C in  is  hybridised and geometry is planar.

Q5. The IUPAC name for

Answer : Option A
Explaination / Solution:

1-Chloro-4-methyl-2-nitrobenzene is the iupac name of the given compound.

Q6. In a π (pi) bond formation, is necessary for one of the below criteria. Choose the appropriate one.
Answer : Option B
Explaination / Solution:

parallel orientataion of p orbitals are necessary for proper overlapping and formation of pie bond.

Q7. In general, in the molecules containing multiple bonds,_____ provide the most reactive centres. Choose the most appropriate one.
Answer : Option A
Explaination / Solution:

pie bonds are the most reactive centers.

Q8. Which of the following compounds contain all the carbon atoms in the same hybridisation state?
Answer : Option B
Explaination / Solution:

In option:A,all the 4 carbon atoms are sp-hybridized.

Q9. Delocalisation of σ-electrons of C -H bond of an alkyl group directly attached to an atom of unsaturated system or to an atom with an unshared p-orbital is called :
Answer : Option D
Explaination / Solution:

The interaction of the electrons in a sigma bond (usually C–H or C–C) with an adjacent empty (or partially filled) non-bonding p-orbital, antibonding σ or π orbital,or filled π orbital, to give an extended molecular orbital that increases the stability of the system is Hyperconjugation.

Q10. Hyperconjugation in an organic compound is a
Answer : Option A
Explaination / Solution:

Hyperconjugation in an organic compound is a stabilizing interaction