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Karnataka Board PUCPUC Science 2nd PUC Class 12

Predict the product of the following reaction: O || C /\ CH3 + CH3CH2NH2 ->[H+] - Chemistry

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Predict the product of the following reaction:

Chemical Equations/Structures
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Solution

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Chapter 8: Aldehydes, Ketones and Carboxylic Acids - Intext Questions [Page 243]

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NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 8 Aldehydes, Ketones and Carboxylic Acids
Intext Questions | Q 8.5 (iv) | Page 243

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Write the chemical equations to illustrate the following name reactions : Rosenmund reduction


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Benzoyl chloride to benzaldehyde.


Write the reaction involved in the Stephen reduction


The oxidation of toluene to benzoic acid can be done using which of the following reagents.


Match the common names given in Column I with the IUPAC names given in Column II.

  Column I
(Common names)
  Column II
(IUPAC names)
(i) Cinnamaldehyde (a) Pentanal
(ii) Acetophenone (b) Prop-2-enal
(iii) Valeraldehyde (c) 4-Methylpent-3-en-2-one
(iv) Acrolein (d) 3-Phenylprop-2-enal
(v) Mesityl oxide (e) 1-Phenylethanone

Match the acids given in Column I with their correct IUPAC names given in Column II.

  Column I
(Acids)
  Column II
(IUPAC names)
(i) Phthalic acid (a) Hexane-1,6-dioic acid
(ii) Oxalic acid (b) Benzene-1,2-dicarboxylic acid
(iii) Succinic acid (c) Pentane-1,5-dioic acid
(iv) Adipic acid (d) Butane-1,4-dioic acid
(v) Glutaric acid (e) Ethane-1,2-dioic acid

Match the example given in Column I with the name of the reaction in Column II.

  Column I
(Example)
  Column II
(Reaction)
(i) \[\begin{array}{cc}
\phantom{...}\ce{O}\phantom{..............................}\ce{O}\phantom{}\\
\phantom{...}||\phantom{..............................}||\phantom{}\\
\ce{CH3 - C - Cl + H2 ->[Pd - C/BasO4] CH3 - C - H}
\end{array}\]
(a) Friedel Crafts acylation
(ii) (b) HVZ reaction
(iii) (c) Aldol condensation
(iv) \[\begin{array}{cc}
\ce{R - CH2 - COOH ->[Br/Red P] R - CH - COOH}\\
\phantom{.....................}|\\
\phantom{.......................}\ce{Br}
\end{array}\]
(d) Cannizaro’s reaction
(v) \[\ce{CH3 - CN ->[(i) SnCl2/HCl][(ii) H2O/H+] CH3CHO}\] (e) Rosenmund’s reductio
(vi) \[\ce{2CH3CHO ->[NaOH] CH3 - CH = CHCHO}\] (f) Stephen’s reaction

An alkene ‘A’ (Mol. formula \[\ce{C5H10}\]) on ozonolysis gives a mixture of two compounds ‘B’ and ‘C’. Compound ‘B’ gives positive Fehling’s test and also forms iodoform on treatment with \[\ce{I2}\] and \[\ce{NaOH}\]. Compound ‘C’ does not give Fehling’s test but forms iodoform. Identify the compounds A, B and C. Write the reaction for ozonolysis and formation of iodoform from B and C.


What is the name of the given reaction of preparation of aldehyde?

\[\ce{C3COCl ->[H2][Pd/BaSO4] CH3CHO + HCl}\]


\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CH3}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\]  obtained by chlorination of n-butane, will be


The reaction 


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Convert the following:

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Reagent used to convert allyl alcohol to acrolein is ______.


Assertion (A): Strong oxidising agents oxidise toluene and its derivatives to benzoic acids.

Reason (R): It is possible to stop the oxidation of toluene at the aldehyde stage with suitable reagents.

Select the most appropriate answer from the options given below:


Account for the following:

Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl.


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