HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Chemistry

How methanol is obtained from methanal.

What are point defects?

Electrolytic method of preparation of dioxygen.

Industrial method of preparation of dioxygen.

Define enthalpy.

What is oxide?

Write names of two oxides.

Write equation to convert Methyl cyanide to ethanoic acid.

Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.

Draw structure of SO₂.

What is the action of the following regent on propanal?

Sodium Bisulphite

How will you determine molar mass of solute from osmotic pressure?

Explain buffer action of sodium acetate-acetic acid buffer.

Write the condition of reverse osmosis.

Explain  Optical activity

Which of the following amines yields foul smelling product with holoform and alcoholic KOH?

(a)    Ethyl amine                   

(b)   Diethyl amine

(c)    Triethyi amine               

(d)  Ethyl methyl amine

Derive van’t Hoff general solution equation.

Explain the structure of sulphur dioxide.

The substance ‘X’, when dissolved in solvent water gave molar mass corresponding to the molecular formula ‘X3’. The van’t Hoff factor (i) is _______.

(A) 3

(B) 0.33

(C) 1.3

(D) 1

What is natural rubber?

(A) Cis-1,4-polyisoprene

(B) Neoprene

(C) Trans-1,4-polyisoprene

(D) Butyl rubber