Compound X with molecular formula `C_(6)H_(10)O` form a semicarbazone and give negative Tollen's and lodoform tests. Upon reduction

Molecular formula C_(4)H_(10)O represent

A compound having molecular formula C_(4)H_(10)O can show

An organic compound 'X' having molecular formula C_(5)H_(10)O yield phenylhydrazone and gives negative response to the iodoform test and Tollens test . It produces n-pentane on reduction. 'X' could be

An organic compound 'X' having molecular formula C_(5)H_(10)O yield phenylhydrazone and gives negative response to the iodoform test and Tollens test . It produces n-pentane on reduction. 'X' could be

A compound (X) with a molecualr formula C_(5)H_(10)O gives a positive 2, 4-DNP test but a negative Tollens' test. On oxidation it gives a carboxylic acid (Y) with a molecular formula C_(3)H_(6)O_(2) . Potassium salt of (Y) undergoes Kolbe's reaction and gives a hydrocarbon (Z). (X), (Y) and (Z) respectively are

(a) Give a possible explaination for each one of the following : - (i) There are two - NH_(2) groups in semicarbazide. However, only one such group is involvedin the formation of semicarbazones. (ii) Cyclohexanone forms cyanohydrin in good yield but 2,4,6 -trimethylcyclohexanone does not. (b) An organic compound with molecular formula C_(9)H_(10)O forms, 2,4 - DNP derivative, reduces Tollens' reagent and undergoes Cannizzaro reaction. On vigorous oxidation it gives 1,2-benzene-di-carboxylic acid. Identify the compound.

How many structures possibles for a compound with the molecular formula C_(6)H_(12)O which can give positive iodoform and 2,4-DNP test.