Division of chairs into leg, back and seat' is an instance of

The correct answer is B) Physical division. Splitting a concrete whole into its material components, such as a chair into its legs, back and seat, is physical division (partition). The whole is a real object and the parts are real parts that together make it up.

• Logical division (A) divides a genus into its species or classes, for example man into male and female, or a triangle into equilateral, isosceles and scalene. It works on concepts, not on physical parts.
• Cross division (C) is not the right label here. It refers to dividing by more than one basis at once, which is a fault in classification, not the splitting of an object into its components.
• Metaphysical division (D) is a distractor. It does not describe the breaking of a physical object into its parts in the classical treatment of division.

The core concept is the difference between whole-part (physical) relations and genus-species (logical) relations. This matters for the logic and reasoning portion of the syllabus and helps in writing clear, structured answers in Mains.

Trap: Aspirants pick logical division because both types sound like classification. Ask whether you are splitting a concrete thing into its parts or a class into its members.