Q 1 :

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

Assertion A: Alcohols react both as nucleophiles and electrophiles.

Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.

In the light of the above statements, choose the correct answer from the options given below:                                                   [2024]

• Both A and R are true but R is NOT the correct explanation of A.

   

• A is true but R is false.

   

• Both A and R are true and R is the correct explanation of A.

   

• A is false but R is true.

   

Q 2 :

${\text{CH}}_3{\text{CH}}_2\text{-OH}\underset{\begin{array}{l}{\text{(ii) KMnO}}_4\\ \text{(iii) NaOH, CaO, }\Delta \end{array}}{\overset{\text{(i) Jone's Reagent}}{\to }}\text{P }$

Consider the above reaction sequence and identify the major product P.                 [2024]

• Methoxymethane

   

• Methane

   

• Methanoic acid

   

• Methanal

   

Q 3 :

The final product A, formed in the following reaction sequence is:                       [2024]

• $\text{Ph}-C{H}_2-C{H}_2-C{H}_3$

   

• 

   

• 

   

• $\text{Ph}-C{H}_2-C{H}_2-C{H}_2-OH$

   

Q 4 :

Products A and B formed in the following set of reactions are                                               [2024]

Q 5 :

Which among the following has the highest boiling point?                          [2024]

• ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{CH}}_2\text{—OH}$

   

• ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2{\text{CH}}_3$

   

• ${\text{CH}}_3{\text{CH}}_2{\text{CH}}_2\text{CHO}$

   

• ${\text{H}}_5{\text{C}}_2{\text{—O—C}}_2{\text{H}}_5$

   

Q 6 :

Common name of Benzene-1, 2-diol is                          [2024]

• resorcinol

   

• o-cresol

   

• catechol

   

• quinol

   

Q 7 :

${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2-\text{Br}+\text{NaOH}\stackrel{C_2{H}_{5}OH}{\to }\text{Product 'A'}$

Consider the above reactions, identify product B and product C.                       [2024]

• B = 2-Propanol, C = 1-Propanol

   

• B = C = 1-Propanol

   

• B = C = 2-Propanol

   

• B = 1-Propanol, C = 2-Propanol

   

Q 8 :

Identify the major products A and B respectively in the following set of reactions.                      [2024]

Q 9 :

Given below are two statements:                 [2025]

Statement (I): The boiling points of alcohols and phenols increase with increase in the number of C-atoms.

Statement (II): The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes.

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

• Statement I is false but Statement II is true

   

• Statement I is true but Statement II is false

   

• Both Statement I and Statement II are true

   

• Both Statement I and Statement II are false

   

Q 10 :

‘R’ formed in the following sequence of reactions is                  [2023]

Q 11 :

‘A’ and ‘B’ formed in the following set of reactions are:              [2023]

Q 12 :

Compound A, ${\mathrm{C}}_5{\mathrm{H}}_{10}{\mathrm{O}}_5$, given a tetraacetate with ${\mathrm{Ac}}_2\mathrm{O}$ and oxidation of A with ${\mathrm{Br}}_2-{\mathrm{H}}_2\mathrm{O}$ gives an acid, ${\mathrm{C}}_5{\mathrm{H}}_{10}{\mathrm{O}}_6$. Reduction of A with HI gives isopentane. The possible structure of A is:                    [2023]

Q 13 :

Decreasing order of dehydration of the following alcohols is        [2023]

• a > d > b > c

   

• d > b > c > a

   

• b > a > d > c

   

• b > d > c > a

   

Q 14 :

A solution of ${\mathrm{CrO}}_5$ in amyl alcohol has a ______ colour.            [2023]

• Yellow

   

• Orange-Red

   

• Green

   

• Blue

   

Q 15 :

In the following reaction, ‘B’ is                        [2023]

Q 16 :

The strongest acid from the following is                  [2023]

Q 17 :

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

Assertion A: Butan-1-ol has higher boiling point than ethoxyethane.

Reason R: Extensive hydrogen bonding leads to stronger association of molecules.

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

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

   

• A is false but R is true

   

• Both A and R are true and R is the correct explanation of A

   

• A is true but R is false

   

Q 18 :

Incorrect method of preparation for alcohols from the following is:                [2023]

• Reaction of ketone with RMgBr followed by hydrolysis

   

• Reaction of alkyl halide with aqueous NaOH.

   

• Ozonolysis of alkene.

   

• Hydroboration–oxidation of alkene.

   

Q 19 :

Product [X] formed in the above reaction is:             [2023]

• 

   

• 

   

• ${\mathrm{H}}_3\mathrm{C}—{\mathrm{CH}}_2—\mathrm{CH}={\mathrm{CH}}_2$

   

• ${\mathrm{H}}_3\mathrm{C}—\mathrm{CH}=\mathrm{CH}—{\mathrm{CH}}_3$

   

Q 20 :

In the reaction given below:

'B' is:                                                 [2023]

Q 21 :

In the above reaction, left hand side and right hand side rings are named as ‘A’ and ‘B’ respectively. They undergo ring expansion. The correct statement for this process is:     [2023]

• Ring expansion can go upto seven membered rings

   

• Only A will become 6 membered.

   

• Finally both rings will become five membered each

   

• Finally both rings will become six membered each

   

Q 22 :

For the given reaction:

The total number of possible products formed by tertiary carbocation of A is ________.          [2023]

Q 23 :

Match List - I with List - II.                     [2025]

Choose the correct answer from the options given below:           

• (A)–(IV), (B)–(III), (C)–(I), (D)–(II)

   

• (A)–(II), (B)–(III), (C)–(I), (D)–(IV)

   

• (A)–(IV), (B)–(III), (C)–(II), (D)–(I)

   

• (A)–(III), (B)–(IV), (C)–(II), (D)–(I)

   

Q 24 :

The reactions which produce alcohol as the product are:

A. ${\mathrm{CH}}_4+{\mathrm{O}}_2\underset{\mathrm{\Delta }}{\overset{{\mathrm{Mo}}_2{\mathrm{O}}_3}{\to }}$

B. $2{\mathrm{CH}}_3{\mathrm{CH}}_3+3{\mathrm{O}}_2\underset{\mathrm{\Delta }}{\overset{({\mathrm{CH}}_3\mathrm{COO}{)}_2\mathrm{Mn}}{\to }}$

C. ${\left({\mathrm{CH}}_3\right)}_3\mathrm{CH}\stackrel{{\mathrm{KMnO}}_4}{\to }$

D. $2{\mathrm{CH}}_4+{\mathrm{O}}_2\stackrel{Cu/523 \mathrm{K}/100 \mathrm{atm}}{\to }$

E. ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{C}{\mathrm{H}}_3\stackrel{{\mathrm{KMnO}}_4/{\mathrm{H}}^{+}}{\to }$

Choose the correct  answer from the options given below: [2026]

• C and D Only

   

• B, D and E Only

   

• A and D Only

   

• A, C and E Only

   

Q 25 :

From the following, how many compounds contain at least one secondary alcohol?

Choose the correct answer from the options given below:                 [2026]

• Two

   

• Five

   

• Three

   

• Four