Chemistry - ALCOHOL & ETHER Question with Solution | TestHub

Question Explanation:

The question asks to correctly match each organic compound with all applicable chemical properties, such as reactions with Na, PCC oxidation, Lucas test, Grignard reagent, hydrogen bonding, and Victor Meyer’s test.

Concept:

Classification of Alcohols, Reactions of Alcohols, Lucas Test, Oxidation by PCC, Grignard Reaction, Hydrogen Bonding, Victor Meyer Test.

Solution:

(P) Primary alcohol

• Produces H₂ with metallic Na due to acidic O–H hydrogen (1)

• Oxidized by PCC to aldehyde (2)

• Reacts with CH₃MgBr; acidic –OH proton is abstracted forming CH₄ (4)

• Forms intermolecular H-bond with H₂O (5)

• Gives red color in Victor Meyer’s test (primary alcohol) (6)

(Q) Tertiary alcohol

• Produces H₂ with metallic Na due to acidic O–H hydrogen (1)

• Does not oxidize with PCC (no α-H)

• Shows immediate cloudiness in Lucas test at room temperature (3)

• Reacts with CH₃MgBr; –OH proton gives CH₄ (4)

• Forms H-bond with H₂O (5)

• Gives no color in Victor Meyer’s test (tertiary alcohol)

(R) Secondary alcohol

• Produces H₂ with Na (1)

• Oxidized by PCC to ketone (2)

• Shows cloudiness in Lucas test (slower than tertiary) (3)

• Reacts with CH₃MgBr forming CH₄ due to acidic –OH hydrogen (4)

• Forms H-bond with H₂O (5)

• Gives blue color in Victor Meyer’s test (tertiary alcohol)

(S) Ether

• Does not produce H₂ with Na

• Does not react with PCC

• Does not show Lucas test

• Does not react with CH₃MgBr (no acidic hydrogen)

• Forms H-bond with H₂O as hydrogen-bond acceptor (5)

Correct Matching:

P → 1,2,4,5,6; Q → 1,3,4,5 ; R → 1,2,3,4,5 ; S → 5

Final Answer: Option (A)