Chemistry
Select the correct answer from the choices given :
(i) The catalyst used for conversion of ethene to ethane is commonly ………….. [nickel/iron/cobalt]
(ii) Acetaldehyde when oxidized with acidified potassium dichromate, forms ………….. [ester/ethanol/acetic acid]
(iii) Ethanoic acid reacts with ethanol in presence of conc. H2SO4, so as to form a compound and water. The chemical reaction which takes place is called ………….. [dehydration/hydrogenation/esterification]
Answer
(i) The catalyst used for conversion of ethene to ethane is commonly nickel.
(ii) Acetaldehyde when oxidized with acidified potassium dichromate, forms acetic acid.
(iii) Ethanoic acid reacts with ethanol in presence of conc. H2SO4, so as to form a compound and water. The chemical reaction which takes place is called esterification
Related Questions
State the observation : Bromine vapours are passed into a soln. of ethyne in carbon tetrachloride.
Choose the correct answer:
Unsaturated hydrocarbons undergo
A: substitution reaction
B: oxidation reaction
C: addition reaction
D: none of the aboveChoose the correct answer:
The number of C – H bonds in ethane molecule are:
A: Four
B: Six
C: Eight
D: TenWrite balanced chemical equations for the following :
(i) Reaction between 1, 2 – dibromoethane and alcoholic potassium hydroxide.
(ii) Monochloro ethane is hydrolysed with aqueous KOH.
(iii) A mixture of sodalime and sodium acetate is heated.
(iv) Ethanol under high pressure and low temperature is treated with acidified potassium dichromate.
(v) Water is added to calcium carbide.
(vi) Ethanol reacts with sodium at room temperature.