4-Nitrotoluene is treated with bromine to get a cornpound 'P'. 'P' is reduced with Sn and HCl to get compound 'Q ' .'Q' is diazotised and the product ,is treated with Phosphini, acid to get a compound 'R' . R is oxidised with alkalin KMnO_(4) to get compound 'S'. Compound 'S' is :
Ethyl bromide is subjected to ammonolysis reaction to give compound 'P'. Compound 'P' reacts with nitrous acid in cold condition to give compound 'Q' with the liberation of nitrogen gas. What is the molecular weight of the compound 'Q' ?
There are three isomeric compounds P,Q,R with molecular formula C_(4)H_(6)O_(3) .Compound P is a saturated hydroxy carboxylic acid.Compound Q is a symmetrical anhydride while R is an aldehydic ester. Which of the following is the metamer of Q ?
A compound 'P' having molecular formula, C_3 H_6 O_2 reacts with Na metal to form a compound 'Q' and evolves a gas which burns with a pop sound. Compound 'P' on treatment with an alcohol 'R' in presence of an acid forms a sweet smelling compound 'S' having molecular formula, C_5 H_(10) O_2 . On addition of NaOH to 'P', it gives 'Q' and water. 'S' on treatment with NaOH solution gives back 'Q' and 'R'. Identify P, Q, R and S.
Compound 'Q' is: 
