List of top Questions asked in Maharashtra Class XII

The rate of A + B \(\rightarrow\) P is \(3.6 \times 10^{-2}\) mol/\(dm^3\)/s. When [A] = 0.2 M and [B] = 0.1 M. Calculate the rate constant if reaction is first order in B and second order in A.
Define : Isotonic solution
Write the structure of zwitter ion of sulfanilic acid. Write the reaction between benzene diazonium chloride and phenol in alkaline medium.
Define : Common ion effect.
Write preparation of glucose from starch.
The salt of \(Sc^{3+}\) ion is colourless and the salt of \(Mn^{3+}\) ion is coloured. Explain. [Z of Sc = 21 and Z of Mn = 25]
Write the postulates of Werner's theory of co-ordination complexes.
What is the action of ethane-1, 2 - diol on acetone?
Write Tollen's reagent test for acetaldehyde.
Calculate the work done in oxidation of 2 moles of \(SO_2\) at 298 K, if \(SO_{2(g) + \frac{1}{2}O_{2(g)} \rightarrow SO_{3(g)}\) [Given : R = 8.314 J/K/mol].}
Write the formula to measure % atom economy according to green chemistry.
Convert : (a) Benzene into benzaldehyde, (b) Cyclohexene into adipic acid.
Write a reaction for preparation of Nylon-6.
Write general characteristics of interhalogen compounds.
Write observed electronic configuration of chromium (Z = 24).
Calculate magnetic moment of \(Ti^{3+}\) by using spin only formula. (Z of Ti = 22)
Define Green chemistry.
Write examples of coordination metal complexes in biology.
Explain amphoteric nature of water.
Convert Ethanol into sodium ethoxide.
Convert Phenol into o-phenol sulfonic acid.
Convert Bromomethane into methoxyethane.
What is peptide linkage?
Derive relationship between relative lowering of vapour pressure and molar mass of non volatile solute.
Write statement of second law of thermodynamics.