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

What is the action of hot HI on it?

3-Methylbutane-2-ol on heating with HI gives ______

How is phenol converted into the following?

picric acid

Choose the correct option.

Which of the following substrate will give ionic organic products on reaction?

Anisole on heating with concentrated HI gives ______.

Choose the correct option.

Which of the following is the least acidic compound?

Answer in one sentence/ word.

Write the name of the electrophile used in Kolbe’s Reaction.

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.