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

Formalin is 40% aqueous solution of:

(a) Methanal

(b) Methanoic acid

(c) Methanol

(d) Methanamine

Give IUPAC name of :

Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram.

Write two uses of formaldehyde

Explain the structure of carbonyl functional group

How are the following compounds prepared?

acetophenone from benzene

How are the following compounds prepared?

benzaldehyde from benzoyl chloride

Write balanced chemical equations for action of ammonia on - acetaldehyde

Write balanced chemical equations for action of ammonia on - acetone

What is the action of the following reagents on ethanoic acid?

1) `LiAlH_4"/"H_3O^+`

2) `PCl_3 , "heat"`

3) `P_2O_5, "heat"`

Write the structure of Phenylmethanamine.

What are amines?

How will you convert acetone to acetone cyanohydrin?

How will you convert benzoic acid to m-bromobenzoic acid?

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.