Question

Column I		Column II
Molecule		Word root of main chain and word root of longest substituent
A		p	Prop
B		q	but
C		r	pent
D		s	hex

• A. $A\to q,s;B\to p,q;C\to p,s;D\to p,r$
• B. $A\to r,q;B\to p,s;C\to p,r;D\to q$
• C. $A\to q;B\to r,s;C\to p,q;D\to q$
• D. None of these

Answer 1

Answer: (A)

$(A\to q,s;B\to p,q;C\to p,s;D\to p,r)$

a. Main chain $\to$ cyclohexane; Longest substituent $\to$ cyclobutyl

b. Main chain $\to$ propane ; Longest substituent $\to$ cyclobutyl

c. Main chain $\to$ propane; Longest substituent $\to$ cyclohexyl

d. Main chain $\to$ pentane; Longest substituent $\to$ cyclopropyl