List of top Chemistry Questions asked in PSEB XII

Why is aniline less basic than ethylamine ?
Define Optical activity.
Explain Reimer Tiemann reaction of Phenols.
Why do Zr and Hf exhibit similar properties ?
Give two differences between Galvanic Cell and Electrolytic cell.
How many Coulombs of electricity are required for complete oxidation of 90 gm of H$_2$O ?
Give two differences between ideal and non-ideal solution.
Give two differences between order of reaction and molecularity of reaction.
Calculate the molal elevation constant of water, it being given that 0.1 molal aqueous solution of a substance boils at 100.052$^\circ$C.
Explain why methylamine is a stronger base than Ammonia ?
Describe Rosenmund reduction.
Give two differences between DNA and RNA.
How will you obtain chlorobenzene from aniline ?
How will you convert propan-1-ol to propan-2-ol ?
Define monodentate ligands and give example.
Write two differences between double salt and co-ordination compounds.
Why do alcohols have higher boiling point than haloalkanes of the same molecular mass ?
The porous membrane used in reverse osmosis plant is made up of :
Vinegar is dilute aqeous solution of :
Benzioc Acid reacts with LiAlH$_4$ to give :
What is DDT among the following :
In the following, strongest Acid is :
The units of ebullioscopic constant is :
The units of first order reaction :
Galvanisation is applying a coating of :