The document discusses the essential elements of a valid contract under Indian law, focusing on the requirement of free consent. It defines key terms including consent, coercion, undue influence, misrepresentation, and mistake. For each term, it provides the legal definition from the Indian Contract Act and illustrations of how those concepts apply in assessing whether a contract is voidable due to a lack of free consent. Overall, the document outlines how lack of free consent due to coercion, undue influence, fraud, misrepresentation or mistake can potentially invalidate a contract.