Match the reactions in Column I with appropriate options in Column II.
| Column-I | Column-II |
 |
(p) Racemic mixture |
 |
(q) Addition reaction |
 |
(r) Substitution reaction |
 |
(s) Coupling reaction |
|
(t) Carbocation intermediate |
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This question involves matching organic reactions (Column I) with their characteristics (Column II). Key concepts:
Racemic mixture: Forms when a chiral center is created from an achiral reactant via symmetric addition (e.g., addition to symmetrical alkene).
Addition reaction: Two molecules combine to form one (e.g., alkene + reagent).
Substitution reaction: Atom/group replaced by another (e.g., SN1/SN2).
Coupling reaction: Two molecules join, often with metal catalysts.
Carbocation intermediate: Forms in SN1 or E1 reactions; positive carbon center.
Final Answer: Analyze each reaction image: check if it creates a chiral center (racemic), is addition/substitution/coupling type, or involves carbocation.