Alcohol Phenol Ethers

Question 1

Statement 1:Hydroboration - oxidation was first reported by H.C. Brown in 1959.
Statement 2: For his studies on boron containing organic compounds, Brown shared the 1979 Nobel prize in Chemistry with G. Wittig.

Answer 1

Both are correct

Question 2

Phenol, also known as……..was first isolated in the early nineteenth century from……….

Answer 2

carbolic acid

coal tar

Question 3

Most of the worldwide production of phenol is from.

Answer 3

cumene

Question 4

…………..possesses analgesic, anti-inflammatory and antipyretic properties.

Answer 4

Aspirin

Question 5

Within isomeric alcohols, solubility……….. with branching. This is due to the reason that as branching increases, the surface area of the non-polar hydrocarbon part decreases and solubility…………

Answer 5

increases

increases

Question 6

Statement 1: Diethyl ether has been used widely as an inhalation anaesthetic.
Statement 2: But due to its slow effect and an unpleasant recovery period, it has been replaced

Answer 6

Both are true

Question 7

Both ethoxyethane and butan-1-ol are miscible to almost the same extent i.e., 7.5 and 9 g per 100 mL water

Answer 7

True

Question 8

Methanol, CH3OH, also known as………

Answer 8

‘wood spirit’

Question 9

Methanol

Answer 9

Nowadays mostly produced by catalytic hydrogenation of carbon monoxide at high pressure and temperature and in the presence of ZnO – Cr2O3 catalyst.
colourless liquid and boils at 337 K
highly poisonous in nature: small quantities=blindness/large=death
solvent in paints, varnishes and chiefly for making formaldehyde.

Question 10

Ethanol, C2H5OH, is obtained commercially by………

Answer 10

fermentation

Question 11

Glucose and fructose undergo fermentation in the presence of another enzyme………which is found in yeast.

Answer 11

zymase

Question 12

In wine making…… are the source of sugars and yeast

Answer 12

grapes

Question 13

The action of zymase is inhibited once the percentage of alcohol formed exceeds….. percent

Answer 13

14

Question 14

Ethanol is a

Answer 14

Colourless liquid with boiling point 351 K.
Used as a solvent in paint industry
Preparation of a number of carbon compounds.

Question 15

The commercial alcohol is made unfit for drinking by mixing in it some…………… (to give it a colour) and………. (a foul smelling liquid). It is known as denaturation of alcohol.

Answer 15

copper sulphate

pyridine