How many of the following sets are member of same \( \mathrm{P} \) ...
How many of the following sets are member of same
\( \mathrm{P} \) homologous series?
W
(i) \( \mathrm{C}_{2} \mathrm{H}_{6}, \mathrm{C}_{4} \mathrm{H}_{10}, \mathrm{C}_{6} \mathrm{H}_{12} \)
(ii) \( \mathrm{CH}_{3}-\mathrm{COOH}, \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{COOH} \), \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{COOH} \)
(iii) \( \mathrm{C}_{3} \mathrm{H}_{7} \mathrm{Br}, \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}, \mathrm{C}_{6} \mathrm{H}_{13} \mathrm{Br} \)
(iv) \( \mathrm{CH}_{3} \mathrm{CHO}, \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHO}, \mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{CH}_{3} \)
(v)
(vi) \( \mathrm{CH}_{3}-\mathrm{NH}_{2}, \mathrm{CH}_{3}-\mathrm{NH}-\mathrm{CH}_{3}, \mathrm{~N}\left(\mathrm{CH}_{3}\right)_{3} \)
(vii) \( \mathrm{CH}_{2}=\mathrm{CH}_{2}, \mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}_{2}, \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}=\mathrm{CH}_{2} \)
(viii) \( \mathrm{CH}_{3}-\mathrm{OH}, \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \),
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