HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

How will you prepare acetic anhydride from acetic acid?

Acid anhydride on reaction with primary amine gives compound having a functional group ______.

Write the consequences of Schottky defect with reasons.

Derive an expression to calculate molar mass of non-volatile solute by osmotic pressure measurement.

Write chemical reactions of following reagents on methoxyethane:

dilute H₂SO₄

Calculate the pH of buffer solution composed of 0.01 M weak base BOH and 0.02 M of its salt BA. [K_b = 1.8 × 10^–5 for weak base]

Explain metal deficiency defect with examples.

AgBr shows which type of defect?

How acetone is converted into propane.

How propanal is converted into propane.

Name a compound where Frenkel defect is found.

Explain the following term:

Substitutional impurity defect

Explain the following term:

Interstitial impurity defect

Define Acidic buffer solution.

Calculate standard Gibbs energy change at 25°C for the cell reaction.

\[\ce{Cd_{(s)} + Sn^{2+}_{ (aq)} -> Cd^{2+}_{ (aq)} + Sn_{(s)}}\]

\[\ce{E^0_{cd}}\] = –0.403 V, \[\ce{E^0_{Sn}}\] = –0.136 V

How will you determine the molar mass of non-volatile solute by elevation of boiling point?

Give reason:

Bleaching action of ozone is also called dry bleach.

Under what conditions ΔH = ΔU?

Give two examples which undergo Wolf-Kishner reduction.

The vapour pressure of water is 16.8 mm Hg at a certain temperature. If the vapour pressure of the solution is 16. 78 mm, find the molality of the solution.