Chapter 11 of Class 6th NCERT Maths Solutions covers the topic of Algebra, which introduces students to variables, constants, coefficients, algebraic expressions, and equations. The chapter teaches students how to write and evaluate algebraic expressions and how to solve simple linear equations using methods such as addition, subtraction, and simplification. The chapter includes several examples and exercises that allow students to practice and apply the concepts they have learned. Overall, Chapter 11 provides a basic understanding of algebraic concepts and lays the foundation for future studies in algebra.