HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Important Questions for Chemistry

Write two points of difference between the properties of phenol and ethyl alcohol.

Write structural formula for pentane-1,4-diol.

Write structural formulae for Cyclohex-2-en-1-ol.

The reagents used to convert phenol to 2,4,6-tribromophenol is _____________

Draw intramolecular hydrogen bonding structure in o-nitrophenol.

What is the action of following reagents on pent-3-enal?

1. H₂/Ni
2. LiAlH₄/H₃O⁺

Write chemical equation of acetyl chloride with phenol

What is the action of following on phenol at low temperature?

1. dil. HNO₃
2. conc. H₂SO₄
3. Br₂/CS₂

How will you bring about the following conversions?

isopropyl alcohol to acetone

How will you bring about the following conversions?

2-methyl propan-2-ol to 2-methylpropene

How will you bring about the following conversions?

acetone to 2-methylpropan-2-ol

An organic compound gives hydrogen on reaction with sodium metal. It forms an aldehyde with molecular formula C₂H₄O on oxidation with pyridinium chlorochromate. Give the chemical equations in support of these observations.

Explain the fact that in alkyl aryl ethers, the alkoxy group is ring activating and ortho/para directing towards electrophilic aromatic substitution.

How will you prepare diethyl ether by dehydration of alcohol?

Write chemical reactions of following reagents on methoxyethane:

hot HI

Convert the following:

Ethyl alcohol into ethyl acetate.

Write preparation of diethyl ether.

Convert the following :

cumene to phenol.

Explain metamerism with suitable examples of ethers

Write the reactions involved in dehydration of 1°, 2° and 3° alcohols.