A. Ethene
B. Diethyl ether
C. Acetylene 
D. Ethyl hydrogen sulphate

the reaction of Ethanol ( C 2 H 5 OH ) with concentrated Sulphuric acid ( H 2 SO 4 ) does not form acetylene.

The correct answer to the question: "The reaction of C2H5OH with conc. H2SO4 does not give_________?" is "Acetylene ".