Alchohal Phenol DPP

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Objective: Problem 1: When ether is exposed to air for some time an explosive substance is produced (A) peroxide (B) TNT (C) oxide (D) super oxide Solution: (A) Peroxide Problem 2: What is the major product obtained when phenol is treated with chloroform and aqueous alkali? (A) Salicyldehyde Problem 3: (C) Both (D) none Solution: Stability of carbocation is 3 > 2 > 1 (A) Problem 4: Organic acid without a carboxylic acid group is …………………….. (A) ascorbic acid (B) vinegar (C) oxalic acid (D) picric acid Solution: Picric acid is a phenol i.e. 2, 4, 6 tri nitro phenol (D) Problem 5: The product of the following reaction (A) 1 – pentanol (B) 2 – pentanol (C) pentane (D) 1, 2 – pentane diol Solution: Anti Markowvnikov product. (A) Problem 6: Product in the reaction (A) propane (B) ethyl iodide (C) butanol (D) methoxy ethane Solution: (D) Problem 7: Phenol can be distinguished from alcohol with (A) Tollen‘s reagent (B) Schiff‘s base (C) Neutral FeCl3 (D) HCl Solution: Phenol gives violet colour with neutral FeCl3. (C) Problem 8: Tert – butyl methyl ether on heating with HI of one molar concentration gives

Transcript of Alchohal Phenol DPP

Objective: Problem 1: When ether is exposed to air for some time an explosive substance is produced (A) peroxide (B) TNT (C) oxide (D) super oxide Solution: (A) Peroxide Problem 2: What is the major product obtained when phenol is treated with chloroform and aqueous alkali?

(A) Salicyldehyde Problem 3:

(C) Both (D) none Solution: Stability of carbocation is 3 > 2 > 1 (A) Problem 4: Organic acid without a carboxylic acid group is …………………….. (A) ascorbic acid (B) vinegar (C) oxalic acid (D) picric acid Solution: Picric acid is a phenol i.e. 2, 4, 6 tri nitro phenol (D) Problem 5: The product of the following reaction

(A) 1 – pentanol (B) 2 – pentanol (C) pentane (D) 1, 2 – pentane diol Solution: Anti Markowvnikov product. (A) Problem 6: Product in the reaction

(A) propane (B) ethyl iodide (C) butanol (D) methoxy ethane Solution:

(D) Problem 7: Phenol can be distinguished from alcohol with (A) Tollen‘s reagent (B) Schiff‘s base (C) Neutral FeCl3 (D) HCl Solution: Phenol gives violet colour with neutral FeCl3. (C) Problem 8: Tert – butyl methyl ether on heating with HI of one molar concentration gives