Q35. Methods used for purification of organic compounds are based on : (1) nature of compound and presence of impurity. (2) neither on nature of compound nor on the impurity present. (3) nature of compound only. $( 4 )$ presence of impurity only.
Q36.
Correct order of basic strength of Pyrrole [Figure] Pyridine [Figure] , and Piperidine is: [Figure] (1) Pyrrole > Piperidine > Pyridine (2) Pyrrole > Pyridine > Piperidine (3) Pyridine $>$ Piperidine $>$ Pyrrole (4) Piperidine $>$ Pyridine $>$ Pyrrole Q37. (A) [Figure] (B) [Figure] (C) [Figure] (D) [Figure] For the given compounds, the correct order of increasing $\mathrm { pK } _ { \mathrm { a } }$ value : [Figure] Choose the correct answer from the options given below : (1) (B) $<$ (D) $<$ (C) $<$ (A) $<$ (E) (2) $( \mathrm { D } ) < ( \mathrm { E } ) < ( \mathrm { C } ) < ( \mathrm { B } ) < ( \mathrm { A } )$ (3) $( \mathrm { E } ) <$ $( \mathrm { D } ) < ( \mathrm { C } ) < ( \mathrm { B } ) < ( \mathrm { A } )$ (4) $( \mathrm { E } ) < ( \mathrm { D } ) < ( \mathrm { B } ) < ( \mathrm { A } ) < ( \mathrm { C } )$
Q35. Methods used for purification of organic compounds are based on :\\
(1) nature of compound and presence of impurity.\\
(2) neither on nature of compound nor on the impurity present.\\
(3) nature of compound only.\\
$( 4 )$ presence of impurity only.
\section*{Q36.}
Correct order of basic strength of Pyrrole\\
\includegraphics[alt={}]{smile-82c11d15b206769aaf2cc1f2135d8748013de173}
Pyridine\\
\includegraphics[alt={}]{smile-4cdd60219414ac273cb02b3a5aa900bd5bd307f3}\\
, and Piperidine\\
is:\\
\includegraphics[alt={}]{smile-d679f4a08114a47be159133be04f8f5730efa1c1}\\
(1) Pyrrole > Piperidine > Pyridine\\
(2) Pyrrole > Pyridine > Piperidine\\
(3) Pyridine $>$ Piperidine $>$ Pyrrole\\
(4) Piperidine $>$ Pyridine $>$ Pyrrole
Q37.\\
(A)\\
\includegraphics[alt={}]{smile-64df60814b0efbaf6414462c18f9aea8197bce2e}\\
(B)\\
\includegraphics[alt={}]{smile-7dadb342e71d05d1747bef73a06466caeccb6e71}\\
(C)\\
\includegraphics[alt={}]{smile-0992af28e575c2de933c08718d8182def5098401}\\
(D)\\
\includegraphics[alt={}]{smile-7bfded0c8c06d786d3632003d36a1cc4fa12e876}
For the given compounds, the correct order of increasing $\mathrm { pK } _ { \mathrm { a } }$ value :\\
\includegraphics[alt={}]{smile-e0723cbb2a9c4ace852b7f29df52ca3f6c1bbb39}\\
Choose the correct answer from the options given below :\\
(1) (B) $<$ (D) $<$ (C) $<$ (A) $<$ (E)\\
(2) $( \mathrm { D } ) < ( \mathrm { E } ) < ( \mathrm { C } ) < ( \mathrm { B } ) < ( \mathrm { A } )$\\
(3) $( \mathrm { E } ) <$\\
$( \mathrm { D } ) < ( \mathrm { C } ) < ( \mathrm { B } ) < ( \mathrm { A } )$\\
(4) $( \mathrm { E } ) < ( \mathrm { D } ) < ( \mathrm { B } ) < ( \mathrm { A } ) < ( \mathrm { C } )$