List of top Chemistry Questions asked in Maharashtra Class XII

Write anomalous behaviour of oxygen with respect to : (i) Atomicity (ii) Oxidation state (iii) Magnetic property (iv) Nature of hydrides.
Define: Osmotic pressure
State Henry's law.
Explain ionization isomers with suitable example in complexes.
Write the differences between lanthanoids and actinoids.
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 ]
Write the structural formula of N, N-dimethylethanamine.
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\(^{-1}\))?
Write the IUPAC name of isoprene.
Write the reagents used for the reduction of carbonyl group in Clemmensen's reduction.
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 number of donor atoms present in EDTA, during formation of complex.
Write the names of the metal elements in brass alloy.
Write the balanced chemical equation, when excess of ammonia is treated with chlorine.
Which formula co-relates degree of dissociation and concentration of electrolyte?
Which of the following is a secondary amine?
One dimensional nanostructure amongst the following is _______.
The highest acidic compound among the following is _______.
The formula used to calculate molar conductivity of an electrolyte is _______.
The value of \( \Delta n_g \) for the oxidation of 4 mole of sulphur dioxide to sulphur trioxide is _______.
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 _______.
What is a nanomaterial? Write the reaction involved in the sol-gel process during hydrolysis.
Identify ‘A’, ‘B’ and ‘C’ in the following chain reaction and rewrite the chemical reactions: \[ CH_3CH_2OH \xrightarrow{\text{red P}, \, Br_2} A \xrightarrow{\text{KCN, alc.}} B \xrightarrow{\text{LiAlH}_4, \text{Ether}} C \]