List of top Chemistry Questions asked in Maharashtra Board Class XII Exam

Write the differences between lanthanoids and actinoids.
State Henry's law.
Calculate the work done in kJ in a reaction, if volume of the reactant decreases from 8 dm\(^3\) to 4 dm\(^3\) against 43 bar pressure. [ 1 dm\(^3\) bar = 100J ]
Explain ionization isomers with suitable example in complexes.
Define: Osmotic pressure
Write anomalous behaviour of oxygen with respect to : (i) Atomicity (ii) Oxidation state (iii) Magnetic property (iv) Nature of hydrides.
Write the names of the metal elements in brass alloy.
Write the IUPAC name of isoprene.
What is the molality of an aqueous solution of KBr having freezing point -3.72\(^\circ\)C (K\(_f\) for water is 1.86 K kg mol\(^{-1}\))?
The rate law equation for A \(\rightarrow\) Product, is rate = k[A]\(^x\). What is the effect of increase in concentration of 'A' on rate of reaction, if x<0?
Write the reagents used for the reduction of carbonyl group in Clemmensen's reduction.
Write the balanced chemical equation, when excess of ammonia is treated with chlorine.
Write the number of donor atoms present in EDTA, during formation of complex.
Write the structural formula of N, N-dimethylethanamine.
The value of \( \Delta n_g \) for the oxidation of 4 mole of sulphur dioxide to sulphur trioxide is _______.
The formula used to calculate molar conductivity of an electrolyte is _______.
The highest acidic compound among the following is _______.
Which formula co-relates degree of dissociation and concentration of electrolyte?
One dimensional nanostructure amongst the following is _______.
Which of the following is a secondary amine?
Ozone layer is depleted by _______.
When excess of AgNO\(_3\) is added to a complex, one mole of AgCl is precipitated. The formula of complex is _______.
The freezing point of 0.1m aqueous solution of urea, if \( K_f \) for water is 1.86 K kg mol\(^{-1}\) is _______.
Write the classification of proteins with an example.
Define Lanthanide contraction. Write the balanced chemical equation when acidified \( K_2Cr_2O_7 \) reacts with \( H_2S \).