Q 1 :

Identify the product (P) in the following reaction:                       [2024]

Q 2 :

Which of the following compounds is least likely to give effervescence of ${\mathrm{CO}}_2$ in presence of aq. ${\mathrm{NaHCO}}_3$?           [2025]

• 

   

• 

   

• $\mathrm{Ph}-\stackrel{(+)}{\mathrm{N}}{\mathrm{H}}_3\stackrel{(-)}{\mathrm{Cl}}$

   

• 

   

Q 3 :

$\mathrm{A}\underset{{\text{(ii) H}}_3{\mathrm{O}}^{+}}{\overset{\text{(i) NaOH}}{\to }}\mathrm{B}\underset{{\text{(ii) H}}_2{\mathrm{SO}}_4,\mathrm{\Delta }}{\overset{\text{(i) EtOH}}{\to }}\mathrm{C}$

‘A’ shows positive Lassaigne’s test for N and its molar mass is 121.

‘B’ gives effervescence with aq. ${\mathrm{NaHCO}}_3$.

‘C’ gives fruity smell.

Identify A, B, and C from the following.           [2025]

Q 4 :

Which will undergo deprotonation most readily in basic medium?          [2023]

• Both a and c

   

• a only

   

• b only

   

• c only

   

Q 5 :

In a reaction,

reagents 'X' and 'Y' respectively are:              [2023]

• ${\mathrm{CH}}_3\mathrm{OH}/{\mathrm{H}}^{+},\mathrm{\Delta }$ and ${\mathrm{CH}}_3\mathrm{OH}/{\mathrm{H}}^{+},\mathrm{\Delta }$

   

• ${\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}/{\mathrm{H}}^{+}$ and ${\mathrm{CH}}_3\mathrm{OH}/{\mathrm{H}}^{+},\mathrm{\Delta }$

   

• ${\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}/{\mathrm{H}}^{+}$ and ${\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}/{\mathrm{H}}^{+}$

   

• ${\mathrm{CH}}_3\mathrm{OH}/{\mathrm{H}}^{+},\mathrm{\Delta }$ and ${\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}/{\mathrm{H}}^{+}$

   

Q 6 :

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: $\mathrm{\alpha }$-halo carboxylic acid on reaction with dil. ${\mathrm{NH}}_3$ gives good yield of $\mathrm{\alpha }$-amino carboxylic acid whereas the yield of amines is very low when prepared from alkyl halides.

Reason R: Amino acids exist in zwitter ion form in aqueous medium.

In the light of the above statements, choose the correct answer from the options given below:                          [2023]

• Both (A) and (R) are correct and (R) is the correct explanation of (A)

   

• (A) is not correct but (R) is correct

   

• Both (A) and (R) are correct but (R) is not the correct explanation of (A)

   

• (A) is correct but (R) is not correct

   

Q 7 :

The major product formed in the following reaction is                        [2023]

Q 8 :

Major product ‘P’ formed in the following reaction is:                    [2023]

Q 9 :

The descending order of acidity for the following carboxylic acid is:

A. ${\mathrm{CH}}_3\mathrm{COOH}$
B. ${\mathrm{F}}_3\mathrm{C}–\mathrm{COOH}$
C. ${\mathrm{ClCH}}_2–\mathrm{COOH}$
D. ${\mathrm{FCH}}_2–\mathrm{COOH}$
E. ${\mathrm{BrCH}}_2–\mathrm{COOH}$ 

Choose the correct answer from the options given below:             [2023]

• E > D > B > A > C

   

• B > D > C > E > A

   

• D > B > A > E > C

   

• B > C > D > E > A

   

Q 10 :

The major product 'P' formed in the following sequence of reaction is

                               [2023]

Q 11 :

Number of compounds from the following which will not dissolve in cold ${\mathrm{NaHCO}}_3$ and NaOH solutions but will dissolve in hot NaOH solutions is ________.         [2023]

Q 12 :

A trisubstituted compound 'A', ${\mathrm{C}}_{10}{\mathrm{H}}_{12}{\mathrm{O}}_2$, gives neutral ${\mathrm{FeCl}}_3$ test positive. Treatment of compound 'A' with $\mathrm{NaOH}$ and ${\mathrm{CH}}_3\mathrm{Br}$ gives ${\mathrm{C}}_{11}{\mathrm{H}}_{14}{\mathrm{O}}_2$, with hydroiodic acid gives methyl iodide and with hot concentrated $\mathrm{NaOH}$ gives a compound B, ${\mathrm{C}}_{10}{\mathrm{H}}_{12}{\mathrm{O}}_2$. Compound 'A' also decolourises alkaline ${\mathrm{KMnO}}_4$. The number of $\pi$ bond(s) present in the compound 'A' is _____________ .              [2023]

Q 13 :

The correct order of acidity for the following compounds is

• I > II > III > IV

   

• III > I > II > IV

   

• III > IV > II > I

   

• I > III > IV > II