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

Write the name of product formed, when acetone is treated with 2, 4-dinitrophenyl hydrazine.

What is the action of sodium hypoiodite on acetone?

Write chemical reactions for the following conversions:

Ethyl bromide to ethyl methyl ether.

The product of following reaction is

\[\ce{CH3 - CH = CH - CH2 - CHO ->[i) LiAlH4][ii) H3O+]}\] ______?

The product of the following reaction is

\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]

Write the chemical reaction involved in Cannizzaro reaction of methanal.

How is 1-nitropropane prepared from suitable oxime?

How are  2 - nitropropane prepared from suitable oxime?

Explain the mechanism of esterification

Identify the strongest acid amongst the followings:

1. Chloroacetic acid          
2. Acetic acid
3. Trichloroacetic acid
4. Dichloroaceticacid

Explain, why are boiling points of carboxylic acids higher than corresponding alcohols

Write the structures and IUPAC names of the :Adipic acid compound

How is nitromethane prepared from the following?

α-halogen carboxylic acid

Complete and rewrite the balanced chemical equations

Complete and rewrite the balanced chemical equations

Butanone + 2, 4-dinitro-phenylhydrazine 

Write chemical equation for the following :
Hell - Vohlard - Zelinsky reaction

Write chemical equation for the following :
Fischer esterificatione

Write balanced equation for the following conversion: 
a. Cyclopropane carboxylic acid to cyclopropylmethanol.
b. Acetyl chloride to benzyl methyl ketone using dialkyl cadmium. 

Identify A and B from the following reaction and rewrite complete reaction: 

Acid anhydride on reaction with primary amine gives compound having a functional group ______.