Dehydrobromination of compounds (A) and (B) yield the same alkene C. Alkene (C) can regenerate (A) and (B) by the addition of HBr in the presence and absence of peroxide respectively. Hydrolysis of (A) and (B) give isomeric products (D) and (E) respectively. 1,1-diphenyl ethane is obtained from reaction of (C) with benzene in presence of `H^(+)`. Give structures of (A) to (E) with proper reasoning.

The reaction intermediates involved in the addition of HBr to propene in the presence of an organic peroxide are (a) free radicals (b)carbocations (c)carbanions (d)carbenes

Two different G.R. (A) and (B) give the product (X) on reaction with ( C) and (D) respectively. Give the structures of (A), (B), ( C) and (D) .

Two isomeric compounds, (A) and (B), have the same formula, C_(11)H_(13)OCI . Both are unsaturated, yield the same compound (C) on catalytic hydrogenation, and produce 4-chloro-3-ethoxybenzoic acid on vigorous oxidation. (A) exists in geometrical isomers, (D) and (E), but not (B). Give structures of (A) to (E) with proper reasoning.

0.90 gm of an organic compound C_(4)H_(10)O_(2) (A) when treated with sodium gives 224 ml of hydrogen at NTP . Compound (A) can be separated into fraction (B) and (C ), by crystallisation of which the fraction (B) is resolved into isomers (D) and (E ). Write down the structural formula of (A) to (E ) with proper reasoning.

An organic compound (A) (C_5 H_8 O_3) on heating with soda lime gives (B) which reacts with HCN to give ( C) . The compound ( C) reacts with thionyl chloride to produce (D) which on reaction with KCN gives a compound ( E) . Alkaline hydrolysis of ( E) gives a salt (F) which on heating with soda lime produces n-butane . Careful oxidation of (A) with dichromate give acetic acid and malonic acid. Give the structures to (A) to (F) with proper reasoning.