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MODEL PAPER 10 — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER 105 Marks
Question
a. Define the term isomer
b. Two compounds have same molecular formula $C _3 H _6 O$. Write the name of these compounds and their structural formula.
c. How would you bring the following conversions:
i. Ethanol to ethene
ii. Propanol to propanoic acid
✓

Answer

a. Isomers are those compounds which have the same molecular formula but different structural formula
b. Propanal- $CH _3 CH _2 CHO$
Propanone- $CH _3 COCH _3$
Above are the name of these compounds and their structural formula.
c. i. $CH _3 CH _2 OH \xrightarrow[\text { Henc }]{\substack{\text { Conc. } H _2 SO _4 \\ \text { Alkaline } KMnO _4}} H _2 C = CH _2+ H _2 O$
ii. $CH _3 CH _2 OH \xrightarrow[\text { Heat }]{43 CH } CH _2 COOH + H _2 O$

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