Hi Sudeep,

Since you have not mentioned for which specific board you are looking,

Please refer to this link: https://school.careers360.com/download/ebooks-and-sample-papers

You will find all the boards here in a single place.
Please apply the filter related to the specific boards and class, and all the question papers and sample papers, along with the answer keys, will be listed in front of you in a free downloadable format.