Important topics for JEE Main, JEE Advanced, BITSAT, CBSE Board Exam and other engineering competitive entrance examinations.

We have unlocked detailed notes and explanation of each and every important topics from physics, chemistry and mathematics. Maths   Set Theory     1.0 Set    2.0 Representation of set    3.0 Types of set    4.0 Subsets    5.0 Theorems based on Subsets    6.0 Power set    7.0 Subsets of the Set    8.0 Intervals as subsets    9.0 Universal set    10.0 Venn Diagrams and operation on Read more…

Electronegativity

Electronegativity is a measure of an atom’s ability to attract the shared pair electrons of a covalent bond towards itself. If atoms bonded together have the same electronegativity, the shared pair of electrons will be equally shared. If the electrons of a bond are more attracted to one of the atoms Read more…

Kjeldahl’s method

The Kjeldahl method first came into existence in 1883 and was developed by a Danish chemist named Johan Kjeldahl. This method was specifically developed for determining the nitrogen contents in organic and inorganic substances. The Kjeldahl method of nitrogen analysis is the Industrial method for calculating the protein content in Read more…