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Organic Chemistry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryOrganic Chemistry5 Marks
Question
The table given below shows the hints about various compounds.
S.No.Hints
(i)Substance 'C' is used as a preservative
(ii)C' has two carbon atoms 'C' is obtained by the reaction of 'A' in presence of alkaline potassium permanganate followed by acidification.
(iii)Misuse of 'A' in industries is prevented by adding methanol, benzene, and pyridine to 'A'.
(iv)'F' is formed on heating 'A' in presence of conc. sulphuric acid.
(v)'F' reacts with hydrogen gas in presence of nickel and palladium catalyst.
Based on the above hints answer the following questions:
(a) Give the IUPAC names of A and F.
(b) Illustrate with the help of chemical equations the changes taking place. (A → C and A → F)
✓

Answer

(a) 'A' CH3CH2OH (Ethanol), 'F' = Ethene (C2H4)
(b) (i) $\underset{(A)}{ CH _3- CH _2- OH } \underset{\text { Alkaline } KMnO _4}{[ O ]} CH _3 COO ^{-} K ^{+} \xrightarrow{ H ^{+}} \underset{\text { (C) }}{ CH _3 COOH }$
(ii) $CH _3-\underset{\text { (A) }}{ CH _2- OH } \xrightarrow[443 K]{\text { Conc. } H _2 SO _4} \underset{\text { (F) }}{ CH _2}= CH _2$

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