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

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 :

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.