Explanation:

- Section 10: Outlines what constitutes a valid contract. It includes essential elements such as offer, acceptance, lawful consideration, and lawful object.

- Section 11: ? Deals with capacity to contract. It specifies who is competent to contract, such as individuals who are of age, of sound mind, and not disqualified by any law.

- Section 12: Relates to the meaning of "free consent." It explains factors affecting free consent such as coercion, undue influence, fraud, misrepresentation, and mistake.

- Section 25: Discusses agreements without consideration and when they can be valid and enforceable.