Which one is not a correct case for the Revolt of 1857?

Recognition of the Right to adopt an heir

The correct answer is Option 3 - Recognition of the Right to adopt an heir

Option 1: Import of British manufactures into India: This was indeed a significant economic cause of resentment. The influx of cheaper, machine-made British goods led to the decline of Indian handicrafts and industries, causing economic hardship and unemployment among artisans and weavers.

Option 2: Disrespect of Indians on public places: Social humiliation and racial discrimination were significant factors contributing to the widespread discontent.

Option 3: Recognition of the Right to adopt an heir: This option is the incorrect case for the Revolt of 1857. In fact, the denial of the right to adopt an heir by the British under the Doctrine of Lapse was a major political cause of the revolt. Several Indian states, including Jhansi, Nagpur, and Satara, were annexed by the British because their rulers died without a natural heir and their adopted sons were not recognized.

Option 4: Conversion of Indians to Christianity: The activities of Christian missionaries, often perceived to be supported by the British administration, caused suspicion and fear among both Hindus and Muslims who felt their religions and cultures were under threat. This was a socio-religious cause of the revolt.

Therefore, the recognition of the right to adopt an heir was not a cause of the Revolt of 1857; rather, its denial was a significant contributing factor.

Note: Option 2 is not specifically mentioned in NCERT as the cause of revolt. However, out of the given answer Option 3 is the most correct answer.