Aldehydes, Ketones and Carboxylic Acids — Chemistry STD 12 Science — Question

Which diseases caused due to deficiency of vitamin D.

5gms. of NaOH is dissolved in 500 ml. of water. Determine the molarity of the solution-

What do you understand by ‘colligative properties’?

Explain giving reason:
(a) Transition metals and many of their compounds show paramagnetic behaviour.
(b) The enthalpies of atomisation of the transition metals are high.
(c) Transition metals in their many compounds act as good catalyst.

On the basis of lanthanoid contraction, explain the following:
Radii of 4d and 5d block elements.

Which metal in the first series of transition metal exhibits +1 oxidation state most frequently and why?

Give equation of the following reaction:

Oxidation of propan-1-ol with alkaline KMnO₄ solution.

How will you bring about the conversion in not more than two step :
Ethanol to 3-Hydroxy butanal

Using IUPAC norms write the systematic name of the following:

[Mn(H₂O)₆]²⁺