Fill in the blanks with the options given:
  
Answer variants:
Red and blue
\(CH_3(CH_2)_3CH_3\)
Hexene
Ethene
Ethyne
 
1. Dehydration of ethanol by conc. sulphuric acid forms __________.
 
2. \(C_6H_{12}\) is the condensed formula for the compound __________.