HYDROXY COMPOUNDS

Which of the following statement is NOT true about an alcohol?

• Methanol is the simplest alcohol.

• Alcohol is more polar than haloalkane.

• Ethanol can be prepared by fermentation.

• Solubility of alcohol in water increases with number of carbon atoms.

When bromine is added to phenol, the brown colour of bromine is decolourised and a white precipitate of 2,4,6-tribromophenol is formed. This is an example of

• electrophilic addition

• free radical substitution

• electrophilic substitution

• nucleophilic substitution

Oxidation of 2-pentanol produces compound X. X gives

• positive result with Tollen's reagent.

• positive result with Benedict's reagent.

• a yellow precipitate wih alkaline iodine.

• orange colour of hot acidified potassium dichromate solution turns green.

Classify the types of alcohol of the following molecule.

• Primary alcohol

• Secondary alcohol.

• Tertiary alcohol

• Aromatic alcohol.

Give the IUPAC name for the following sructure.

• 1,2- cyclopentanol.

• 1,2-pentanol.

• 1,2–cyclopentanediol.

• 1,2-pentanediol

Give the structure corresponding to 3–cyclohexyl–3–pentanol.

• 
• 
• 
• 

1-pentanol can be differentiate from 3-pentanol by using

• Phosphorus (v) chloride

• Lucas reagent

• Alkaline iodine

• Acidified potassium dichromate solution

Compound T is an alcohol and optically active. Upon oxidation with acidified KMnO₄ solution, a ketone, U is formed. Compound T is

• CH₃CH₂OH

• CH₃CH(OH)CH₂CH₃

• (CH₃)₂C(OH)CH₃

• CH₃CH₂CH(OH)CH₂CH₃

Tags

NGSS.HS-PS1-2

The reaction between (CH₃)₂CHBr with KOH aqueous will give one of the following compounds

• CH₃CH₂OH

• CH₃CH₂CH₂CH₂OH

• CH₃CH₂CH₂OH

• CH₃CH(OH)CH₃

Tags

NGSS.HS-PS1-6

Arrange the following compounds in order of increasing acidity.

Water, Phenol, Ethanol, 2-propanol

• Ethanol, 2-propanol, water, Phenol

• 2-propanol, Ethanol, water, Phenol

• Water, Phenol, Ethanol, 2-propanol

• Phenol, water, Ethanol, 2-propanol