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An organic compound containing one oxyge...

An organic compound containing one oxygen gives red colour with cerric ammonium nitrate solution, decolorises alkaline `KMnO_(4)` solution, responds iodoform test and shows geometrical isomerism. It should be:

A

`C_(6)H_(5)-CH=CH-CH_(2)OH`

B

`C_(6)H_(5)-CH=CH-CHOHCH_(3)`

C

`C_(6)H_(5)-CH=CHCOCH_(3)`

D

Text Solution

Verified by Experts

The correct Answer is:
B
`C_(6)H_(5)-CH=CH-overset(OH)overset(|)CH-CH_(3)`
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An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.

An organic compound, C_(2)H_(4)O gives a red precipitate when warmed with Fehling’s solution. It also undergoes aldol condensation in presence of alkali. (i) Write IUPAC name of the compound. (ii) What is the hybridization of carbon atoms in the compound ? (iii) Write equation for the reaction.

Knowledge Check

  • An organic compound (A) of molecular weight 135 on boiling with NaOH evolves a gas which gives white dense fumes on bringing a rod dipped in HCl near it. The alkaline solution thus obtained on acidification gives the precipitate of a compound (B) having molecular weight 136. Treatment of (A) with HNO_2 also yeilds (B), whereas its treatment with Br_2//KOH gives (C). compound (C) reacts with cold HNO_2 to give(D), which gives red colour with ceric ammonium nitrate. On the other hand(E) an isomer of (A) on boiling with dil HCl gives an acid (F), having molecular weight 136. On oxidation followed by heating, (F) gives an anhydride (G) which condenses with benzene in presence of AlCl_3 to give anthraquinone. IUPAC name of compound (B) is

    A
    p-methylbenzoic acid
    B
    2-phenylethanoic acid
    C
    methyl benzoate
    D
    none of these

  • An organic compound (A) of molecular weight 135 on boiling with NaOH evolves a gas which gives white dense fumes on bringing a rod dipped in HCl near it. The alkaline solution thus obtained on acidification gives the precipitate of a compound (B) having molecular weight 136. Treatment of (A) with HNO_2 also yeilds (B), whereas its treatment with Br_2//KOH gives (C). compound (C) reacts with cold HNO_2 to give(D), which gives red colour with ceric ammonium nitrate. On the other hand(E) an isomer of (A) on boiling with dil HCl gives an acid (F), having molecular weight 136. On oxidation followed by heating, (F) gives an anhydride (G) which condenses with benzene in presence of AlCl_3 to give anthraquinone. Structural formula of compound (C) is

    A
    B
    C
    D
    `C_6 H_5 CH_2 NH_2`

  • An organic compound (A) of molecular weight 135 on boiling with NaOH evolves a gas which gives white dense fumes on bringing a rod dipped in HCl near it. The alkaline solution thus obtained on acidification gives the precipitate of a compound (B) having molecular weight 136. Treatment of (A) with HNO_2 also yeilds (B), whereas its treatment with Br_2//KOH gives (C). compound (C) reacts with cold HNO_2 to give(D), which gives red colour with ceric ammonium nitrate. On the other hand(E) an isomer of (A) on boiling with dil HCl gives an acid (F), having molecular weight 136. On oxidation followed by heating, (F) gives an anhydride (G) which condenses with benzene in presence of AlCl_3 to give anthraquinone. Structrual formula of compound (A) is

    A
    B
    C
    D

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    An organic compound X gives a red precipitate on heating with Fehling's solution. Which one of following reactions yields X as major product ?

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