CTET Paper II (Mathematics and Science) 19 Jan 2023 Solved Paper

Concept:A monomial is an algebraic expression that has exactly one term. It can be a constant, a variable, or a product of constants and variables with non‑negative integer exponents.Explanation:Count the number of terms in each option.Option A: $2x + 7$ contains two terms – $2x$ and $7$. It is a binomial.Option B: $x + 7$ also has two terms. It is a binomial.Option C: $x^{2}$ consists of a single term. It is a monomial.Option D: $3x^{2} + 2x + 7$ has three terms. It is a trinomial.Hence, only option C is a monomial.Answer:Option C: $x^{2}$ is the correct answer.