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

Write the molecular and structural formula of BHA and BHT.

Define carbolic acid.

When phenol is heated with conc. HNO₃ in presence of conc. H₂SO₄ it yields _______.

(A) o-nitrophenol

(B) p-nitrophenol

(C) 2,4,6-trinitrophenol

(D) m-nitrophenol

Write 'two' uses of phenol.

What happens when glucose is treated with Bromine water

What happens when glucose is treated with - Dilute nitric acid

What is the action of the following reagents on phenol - H₂SO₄ at room temperature.

How is carbolic acid prepared from the given compounds :

Chlorobenzene and steam at 698K?

Write the main constituents of dettol.

Write balanced chemical equation for the following :
Action of zinc dust on phenol.

Write a preparation of phenol from cumene? What happens when phenol is heated with zinc dust? 

Isopropylbenzene on air oxidation followed by decomposition by dilute acid gives ______.

Write preparation of phenol from aniline.

Write Dow process for the preparation of Phenol.

How is Methoxyethane prepared from : Methyl iodide

Carbon atom in methyl carbocation contains how many pairs of electrons?

(a) 8

(b) 4

(c) 3

(d) 5

How is diethyl ether prepared by continuous etherification process?

How is nitroethane converted into ethylamine.

How is Methoxyethane prepared from : Diazomethane

How is nitroethane converted into N-ethylhydroxylamine