Would you please tell about which colleges you are talking. However admission to most of the colleges in India is other given on the basis of merit scores achieved by the student in the class 10 + 2 level board examination. Like in Delhi University affiliated colleges admission is done on the basis of merit scores.
Well you can get more information by clicking the link below:
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/&ved=2ahUKEwiL4_6dyo3yAhWt7HMBHQh3DN0QFjAAegQICBAC&usg=AOvVaw0kXTs63lu0AEzhiIz4mPU8&cshid=1627743826643
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