The product ?A? in the following reaction is \[\begin{array}{*{35}{l}} {{H}_{2}}C\,\,C{{H}_{2}} \\ \begin{align} & \,\,\,\,\,\,\,\,\,\,\,\, \\ & \,\,\,\,\,\,\,\,\,\,\,\,\overset{\backslash /}{\mathop{O}}\, \\ \end{align} \\ \end{array}\xrightarrow{RMgI}A\] [MP PMT 2003]

Which of the following will be obtained by keeping ether in contact with air for a long time [RPMT 2003]

The most appropriate reagents that can bring about the following transformation is

Benzene diazonium chloride on boiling with dilute sulphuric acid gives [MP PMT 1983]

Phenolphthalein is obtained by heating phthalic anhydride with conc. \[{{H}_{2}}S{{O}_{4}}\] and [BHU 1996]

Which gas is eliminated in fermentation [RPMT 1997]

Phenol is obtained by heating aqueous solution of [MP PMT 1995]

When an alkyl halide is allowed to react with a sodium alkoxide the product most likely is [MP PMT 1996; EAMCET 1998]

The compound formed when ethyl bromide is heated with dry silver oxide is [MP PET/PMT 1988]

Coconut oil upon alkaline hydrolysis gives [MP PET 1991; AFMC 2000; KCET 2001; BCECE 2005]

Acetic acid and \[C{{H}_{3}}OH\] are obtained on large scale by destructive distillation of

An organic compound X on treatment with acidified \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] gives a compound Y which reacts with \[{{I}_{2}}\] and sodium carbonate to form tri-odomethane. The compound X is [KCET 1996]

Which compound has hydrogen bonding [MP PMT 1992; MP PET 1991]

Alcohols (i) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH,\] (ii) \[C{{H}_{3}}-CHOH-C{{H}_{3}}\] and (iii) \[C{{H}_{3}}-C(C{{H}_{3}})(OH)-C{{H}_{3}}\] were treated with Lucas reagent (Conc. \[HCl+ZnC{{l}_{2}}).\] What results do you expect at room temperature

By means of calcium chloride which of following can be dried