PUC Science 2nd PUC Class 12 - Karnataka Board PUC Question Bank Solutions for Chemistry

How does the magnitude of Δ₀ decide the actual configuration of d orbitals in a coordination entity?

The melting points and solubility in water of amino acids are generally higher than those of the corresponding halo acids. Explain.

What are non-essential amino acids? Give two examples.

An organic compound with the molecular formula C₉H₁₀O forms 2, 4-DNP derivative, reduces Tollens’ reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. Identify the compound.

Describe the following:

Cannizzaro reaction

How will you bring about the following conversion?

Benzene to biphenyl

How the following conversion can be carried out?

Benzene to diphenyl

Complete the following reactions:

Complete the following reactions:

Draw labelled diagram Dialysis.

8 g of glucose, C₆H₁₂O₆ (Molar Mass = 180 g mol⁻¹) is dissolved in 1 kg of water in a sauce pan. At what temperature will this solution boil? 

(K_b for water = 0.52 K kg mol⁻¹, boiling point of pure water = 373.15 K)

Calculate the boiling point of solution when 4g of MgSO₄ (M= 120 g mol^-1) was dissolved in 100g of water, assuming MgSO4 undergoes complete ionization. (K_b for water = 0.52 K kgmol^-1)

Distinguish between the following pairs of compounds: Aniline and N-methylaniline

On adding NaOH to ammonium sulphate, a colourless gas with pungent odour is evolved, which forms a blue-coloured complex with Cu²⁺ ion. Identify the gas.

Write the main product(s) in each of the following reactions:

Out of 1 M glucose and 2 M glucose, which one has a higher boiling point and why?

Why is elevation of boiling point a colligative property?

Define the following term as related to proteins:

Primary structure

Define the following term: 

Molal elevation constant (K_b)

Based on molecular forces, what type of polymer is neoprene?