how I plan for vit entrance exam . is ncert sufficient for this exam. give me perfect plan about that

First you need complete NCERT, once it is done start doing sample papers, previous year papers and keep mocks for last month revision. You can also use standard reference books like HC Verma (Physics), RD Sharma (Mathematics)and Advanced problems in organic chemistry by H Pandey.

And below topics need more concentration as they are very important -

Physics
Electrostatics, Current Electricity, Effects of Electric Current, Electromagnetic Induction and semiconductor devices. You need to focus more on these topics as most of the question will from these topics.

Topics under Chemistry
Atomic Structure, Electrochemistry, Biomolecules, Organic Nitrogen Compounds, Alcohols and Ethers. NCERT is the best source for In organic preparation thus you can refer this.

Topics under Maths
Vector Algebra, Analytical Geometry of Three Dimensions, Integral Calculus and its Applications are the tough topic thus give proper emphasis on them.

Hope this helps!!!

Good Luck!!!