Alcohols, Phenols and Ethers · Question 3

Consider compounds A, B and C with following structural formulae A = CH3-CH2-CH2-CH2-CH2-OH B = CH2=CH-CH2-CH2-CH3 C = HO-CH2-CH2-CH(OH)-CH3 For the conversion of B from A , reagent (D) required is and structural formula of product (E) obtained when C undergoes same reaction using excess reagent (D) is .

1. D: Conc. H2SO4; E: CH2=CH-CH(OH)CH3
2. D: PCC; E: HO-CH2-CH2-CH=CH2
3. D: PCC; E: CH2=CH-CH=CH2
4. D: Conc. H2SO4 or H3PO4; E: CH2=CH-CH=CH2

One mole of phenol is treated with dilute HNO3 at 298 K to give a mixture of products. The mixture is separated by steam distillation. The steam volatile compound (X) is separated. The increase in percentage of oxygen in (X) with respect to phenol is 10-1% (Given molar mass in g mol-1 H : 1, C : 12, N : 14, O : 16)

Amongst the following, the total number of compounds soluble in aqueous NaOH at room temperature is: [figure]

1. 5
2. 4
3. 6
4. 3

Consider the following reaction sequence : [figure] Compound (y) develops characteristic colour with neutral FeCl3 solution. Identify the INCORRECT statement from the following for the above sequence.

1. Compound y will dissolve in NaHCO3 and evolve a gas.
2. Compound x is more acidic than compound y.
3. Both compounds x and y will dissolve in NaOH.
4. Both compounds x and y will burn with sooty flame.

Consider the following two reactions A and B. [figure] Numerical value of [molar mass of x + molar mass of y] is

1. 46
2. 160
3. 88
4. 4

A hydroxy compound (X) with molar mass 122 g mol-1 is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of 290 g mol-1. The number of hydroxyl groups present in compound (X) is:

1. 2
2. 4
3. 3
4. 5

From the following, how many compounds contain at least one secondary alcohol? [figure] Choose the correct answer from the options given below :

1. Three
2. Two
3. Four
4. Five

A mixed ether (P), when heated with excess of hot concentrated hydrogen iodide produces two different alkyl iodides which when treated with aq. NaOH give compounds (Q) and (R). Both (Q) and (R) give yellow precipitate with NaOI. Identify the mixed ether (P) :

1. [figure]
2. [figure]
3. [figure]
4. [figure]

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

1. Statement I is true but Statement II is false
2. Both Statement I and Statement II are true
3. Both Statement I and Statement II are false
4. Statement I is false but Statement II is true

3,3-Dimethyl-2-butanol cannot be prepared by : Choose the correct answer from the options given below :

1. B and E Only
2. B, C and E Only
3. B and C Only
4. B Only