List of top Chemistry Questions asked in Maharashtra Class XII

Calculate the osmotic pressure of solution containing 0.822 gm of sucrose in 300 mL of water at 298 K. [ Given : Molar mass of sucrose 342 g/mol, R = 0.08205 $dm^3$ atm $K^{-1}$ $mol^{-1}$ ]
Explain Homoleptic and Heteroleptic complexes with example.
Define -- Enantiomers
Write the reaction of bromine water on glucose.
Explain the trends in the following properties of group 17 elements : Electronegativity
Define : Unit Cell
Define : Isomorphism
Explain the trends in the following properties of group 17 elements : Atomic radii
Write the name of nanoparticle which acts as highly effective bacterial disinfectant.
Write the IUPAC name of :
Copper has fcc structure with edge length 495 pm. What is the radius of copper atom in pm?
Write the chemical name of Teflon.
Complete the following reaction :
Write the SI unit of cell constant.
Write the name of radioactive element in lanthanide series.
Write the name of product obtained, when selenium is treated with magnesium metal.
The correct order for basic strength of amines and ammonia is ________.
The co-ordination complex ions $[Co(NH_3)_5(NO_2)]^{2+}$ and $[Co(NH_3)_5(ONO)]^{2+}$ are ________ of each other.
A system releases 10 kJ of heat and performs 15 kJ of work on the surrounding. Hence the change in internal energy is :
The unit of rate constant is per second, the order of reaction is --
Acetonitrile may be prepared by heating the following reactants :
The carbonated water is an example of ________.
The oxidation state of bromine in $HOBrO_2$ oxoacid is ________.
The electrolyte used in $H_2 - O_2$ fuel cell is ________.
Substances have zero resistivity or infinite conductivity known as ________.