hey,

topics covered form class 11th in SB/SX streams

for chemistry - carbon compounds, acids bases and salts, states of matter, periodic classification of elements , classification of elements and periodicity in properties , environmental chemistry , metals and non metals , isolation of elements , chemical bonding, thermodynamics, chemistry reactions , basic concepts of chemistry, structure and bonding, cycloalkenes , dienes and alkynes

for physics- sources of energy , waves and optics, physical world and measurement , electricity and magnetism , kinematics, refraction , applications in daily life , laws of motion , gravitation , thermodynamics, reflection , work, energy and power, electrostatics, thermal physics

for mathematics - surface areas and volumes ,vectors and 3-D geometry, real number , analytical geometry in two dimensions, quadratic equations, coordinate geometry, mathematical reasoning, evaluation of integrals, statistics, trigonometric polynomials, geometry , introduction to trigonometry, functions, vector algebra

for class 12th refer to the link

https://school.careers360.com/articles/kvpy-syllabus

all the best!