Cis – – butene and trans – – butene are a) conformational isomers b) structural isomers c) configurational isomers d) optical isomers . Identify the compound (A) in the following reaction CHC H + (A) i) O ii) Zn/H O Unit Unit - - - - a) CHO b) CHO c) OH d) COOH . CH – CH ( ) A → CH ≡ CH,where A is, | | Br Br a) Zn b) Conc H SO c) alc. KOH d) dil H SO .
Consider the nitration of benzene using mixed con H SO and HNO if a large quantity of KHSO is added to the mixture, the rate of nitration will be a) unchanged b) doubled c) faster d) slower . In which of the following molecules, all atoms are co-planar a) b) c) d) both (a) and (b) . Propyne on passing through red hot iron tube gives a) H C b) C H c) d) none of these . CH –CH=CH HCl (A) is a) CH – CH = CH b) CH – CH = CH c) both (a) and (b) d) C l CH – CH = CH .
Which one of the following is non aromatic ? a) b) c) S d) . Which of the following compounds will not undergo Friedal – crafts reaction easily ? (NEET) a) Nitro benzene b) Toluene c) Cumene d) Xylene Unit Unit - - - - .
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ? a) – COOH b) – NO c) – C ≡ N d) – SO H . Which of the following can be used as the halide component for friedal - crafts reaction ?
a) Chloro benzene b) Bromo benzene c) chloro ethene d) isopropyl chloride . An alkane is obtained by decarboxylation of sodium propionate. Same