Banaras Hindu University

You need to focus on the syllabus of exam for class 12th, you just appeared. There are 150 questions comprising of 50 from each P, C&M concluding to a maximum mark of 450. If you are good at scoring 222, you'll get BHU.
Prepare well, solve questions and also theoretical questions in Science field and you'll make it to BHU. There's no need to go beyond the syllabus, what is asked in board exams for class 12th, and if you need more assistance you can purchase an entrance book which comes in cover as BHU UETB. Sc. Math entrance by any of the publication. You can also search the papers of last year entrance exams which are availed on bhuonline.in

Every year, Banaras Hindu University (BHU) conducts an All India entrance examination for admission to Bachelor of Arts (BA) programmes offered by the university. Entrance exam has been divided into five sections namely General Awareness, Numerical Aptitude, General Mental Ability, General English and Social Science, each divided into number of individual chapters.
Mathematical Aptitude Test Areas (+2 Level): Logarithms, Inequalities, Matrices and Determinants, Progressions, Binomial Expansion, Permutation and Combination, Equations (up to degree 2), Function and Relation, Complex Arithmetic, 2-D Coordinate Geometry, Basics of Calculus, Basic Concepts of Probability.
Analytical and Logical Reasoning: Questions will be mainly for checking logical conclusion, graphical/data interpretation, etc.