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12th Standard English Medium Chemistry Subject Carbonyl Compounds Book Back 1 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 5

    Part I

    5 x 1 = 5
  1. Phenyl methanal is reacted with concentrated NaOH to give two products X and Y. X reacts with metallic sodium to liberate hydrogen X and Y are ________.

    (a)

    sodium benzoate and phenol

    (b)

    Sodium benzoate and phenyl methanol

    (c)

    phenyl methanol and sodium benzoate

    (d)

    none of these

  2. In which of the following reactions new carbon – carbon bond is not formed?

    (a)

    Aldol condensation

    (b)

    Friedel craft reaction

    (c)

    Kolbe’s reaction

    (d)

    Wolf kishner reduction

  3. An alkene “A” on reaction with O3 and Zn - H2O gives propanone and ethanol in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is ______.

    (a)

    \(Cl-{ CH }_{ 2 }-CH_{ 2 }-\overset { \overset { CH_{ 3 } }{ | } }{ \underset { \underset { CH_{ 3 } }{ | } }{ CH } } \)

    (b)

    \({ H }_{ 3 }C-{ CH }_{ 2 }-\overset { \overset { CH_{ 2 }Cl }{ | } }{ CH } -{ CH }_{ 3 }\)

    (c)

    \(\\ { H }_{ 3 }C-{ CH }_{ 2 }-\overset { \overset { CH_{ 3 } }{ | } }{ \underset { \underset { CL{ } }{ | } }{ C } } -{ CH }_{ 3 }\)

    (d)

    \({ H }_{ 3 }C-{ CH }-\overset { \overset { CH_{ 3 } }{ | } }{ \underset { \underset { Cl }{ | } }{ C } } \)

  4. Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ________.

    (a)

    more extensive association of carboxylic acid via van der Waals force of attraction

    (b)

    formation of carboxylate ion

    (c)

    formation of intramolecular H-bonding

    (d)

    formation of intermolecular H – bonding

  5. Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?

    (a)

    (b)

    (c)

    (d)

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