HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Important Questions for Chemistry

How will you prepare acetic anhydride from acetic acid?

Identify A and B from the following reaction:

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\phantom{}\ce{2CH3 - C = O ->[Ba(OH)2] A ->[Δ] B + H2O}
\end{array}\]

Write structure of adipic acid.

Write preparation of acetic acid from:

acetyl chloride

Write preparation of acetic acid from:

dry ice

How ketones are prepared from nitriles?

How propanal is converted into propane.

Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.

The product of hydrolysis of propyne in the presence of 1% \[\ce{HgSO4}\] and 40% \[\ce{H2SO4}\] is ______.

Write preparation of propanone by using ethanoyl chloride and dimethyl cadmium.

How are ketones classified?

Write the structures and IUPAC names of the α - methyl butyraldehyde.

Acetaldehyde, when treated with which among the following reagents does NOT undergo addition reaction?

(A) Ammonia

(B) Hydroxylamine

(C) Ammoniacal silver nitrate

(D) Semicarbazide

Write balanced chemical equations for action of ammonia on - formaldehyde

Compound having general formula is called

(A) diester

(B) acid anhydride

(C) hemiacetal

(D) acetal

How is 4-methylpent-3-en-2-one obtained from propan-2-one?

How are the following compounds prepared?

benzaldehyde from benzene

Formalin is 40% aqueous solution of:

(a) Methanal

(b) Methanoic acid

(c) Methanol

(d) Methanamine

Give IUPAC name of :