What are the subects required to take admission and from which class?

That depends entirely on the institution and the program you're applying to. There's no single answer. To know what subjects are required for admission and from which class, you need to specify:

* The country: Educational systems vary significantly across the world.

* The type of institution: Are you applying to a university, college, trade school, or something else?

* The specific program: Requirements for a medical degree are vastly different from those for a history degree, even within the same university.

For example:

* University in the US applying for a Computer Science Bachelor's degree: Might require high school graduation with specific courses like Algebra II, calculus, and possibly programming.

* University in the UK applying for a Law degree: Might require A-levels in specific subjects, such as history, English, or other social sciences.

* Trade school in Canada applying for a welding program: Might require a high school diploma or GED, but specific subject requirements might be less stringent than for university.

Please provide more details about the institution and program you're interested in so I can give you a more accurate answer.