Hydroxy Compounds and Ethers Chemistry - Hydroxy Compounds and Ethers

Which one of the following will react with phenol to give salicylaldehyde after hydrolysis.

Carbolic acid is ____________.

Which of the following is incorrect for physisorption?

…………. is used as refrigerant.

…………. is used as a surgical anesthetic agent in surgery.

The reaction take place when ethers are exposed to oxygen is ………….

The dipole moment of diethyl ether is ………….

The mechanism take place when alkyl halide is treated with alcohol solution of sodiunalkoxide is ………….

(A): Inter molecular dehydration of alcohol is not a suitable method of prepare mixed ethers.
Reason (R): When a mixture of two different alcohols are used, mixture of different ethers are formed and they are difficult to separate.
(a) Both A and R are correct and R is the correct explanation of A.
(b) Both A and R are correct but R is not the correct explanation of A.
(c) A is correct but R is wrong
(d) A is wrong but R is correct

(A): O – nitro phenol is slightly soluble in water whereas P – nitro phenol is more soluble in water.
Reason (R): O – nitro phenol has intra molecular hydrogen bonding whereas P – nitro phenol has inter molecular hydrogen bonding.
(a) Both A and R are correct and R is the correct explanation of A.
(b) Both A and are wrong
(c) A is correct but R is wrong
(d) A is wiong but R is correct

(A): P – cresol is less acidic than phenol.
Reason (R): Alkyl substituted phenols show a decreased acidity due to the electron releasing + I effect of alkyl group.
(a) Both A and R are correct but R is not the correct explanation of A.
(b) Both A and R are correct and R is the correct explanation of A.
(c) Both A and R are wrong
(d) A is correct but R is wrong

(A): Primary alcohols are more acidic than tertiary alcohol.
Reason (R): Alkyl groups (electron releasing group) increases the electron density on oxygen and decreases the polar nature of – OH bond. Hence it results in the decrease in acidity.
(a) Both A and R are correct and R is the correct explanation of A.
(b) Both A and R are not correct
(c) A is correct but R is wrong
(d) A is wrong but R is correct

Is it possible to oxidise t-butyl alcohol using acidified dichromate to form a carbonyl compound?

Arrange the following in the increasing order of their boiling point and give a reason for your ordering.

Butan-2-ol, Butan-1-ol, 2-methyl propane-2-ol

Arrange the following in the increasing order of their boiling point and give a reason for your ordering.

Propan-1-ol, propan-1, 2, 3-triol, propan-1, 3-diol, propan-2-ol

Column-I	Column-II
A. Dow's process	1. Salicylaldehyde
B. Schotten-Baumann reaction	2. Phenol
C. Kolbe's reaction	3. Phenyl benzoate
D. Reimer Tiemann Reaction	4. Salicylic acid

Code.	A	B	C	D
(a)	2	3	4	1
(b)	4	2	1	3
(c)	1	4	3	2
(d)	3	1	2	4

Phenol is distilled with Zn dust followed by Friedel-crafts alkylation with propyl chloride to give a compound B, B on oxidation gives (c) Identify A, B and C.

Write the chemical equation for Williamson's synthesis of 2-ethoxy-2-methyl pentane starting from ethanol and 2-methyl pentan-2-ol.

Explain Kolbe’s reaction.

How are the following conversions carried out ? (Write the reactions and conditions in each case):

1. Ethanol to 2 – propanol
2. Phenol to Acetophenone

How is phenol prepared from chloro benzene?