Chemistry : Organic Chemistry – Some Basic Principles and Techniques

CH₃(CH₂)₄CH₃ $\underset{773 \mathrm{K}, 10-20 \mathrm{atm}}{\overset{{\mathrm{Cr}}_2{\mathrm{O}}_3/ {\mathrm{Al}}_2{\mathrm{O}}_3}{\to }} \mathrm{A} \stackrel{{\mathrm{Br}}_2/ \mathrm{Fe}}{\to } \mathrm{B} \underset{\mathrm{ether}}{\overset{\mathrm{Mg}}{\to }} \mathrm{C} \stackrel{{\mathrm{H}}_2\mathrm{O}}{\to } \mathrm{D}$

What is D?

Which is the strongest acid ?

• ClCH₂COOH

• CH₃COOH

• Cl₂CHCOOH

• CCl₃COOH

Which of the compound is optically active ?

• 1 - butanol

• Ethanol

• 2 - butanol

• Isopropyl alcohol

How many geometrical isomers are possible in the following two alkenes ?

(i) CH₃ - CH = CH - CH = CH - CH₃

(ii) CH₃ - CH = CH - CH = CH - Cl

• 4 and 4

• 4 and 3

• 3 and 3

• 3 and 4.

The two isomers given below are :

• enantiomers

• diastereomers

• mesomers

• position isomers

Assertion : Electromeric effect is brought into play only at the requirement of the reagent.

Reason : It is a temporary effect in which bond pair is shifted to one of the constituent atoms.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

Which of the following radioisotopes is used as anticancerous?

• Na-24

• C-14

• U-235

• Co-60

(I) and (II) are :

• enantiomers

• diastereomers

• meso compound

• identical

Assertion :Tertiarycarbonium ions are generally formed  more easily than primary carbonium ions.

Reason : Hyperconjugation as well as inductive effect due to additional alkyl groups stabilize tertiary carbonium ions.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Pyrrole is an aromatic heterocyclic compound.

Reason : It has cyclic delocalised 6$\mathrm{\pi }$ electrons.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.