For the best preparation of 2021 Board It Contains Class 10 CBSE Board Sample Papers of Science of 2020, 2019, 2018, 2017, 2016, 2015 (All India , Delhi and Foreign).You can also read all papers.
Class 10 Science Sample Papers 2019-2020
Class 10 Science Sample Papers 2018-2019
Class 10 Science Sample Papers 2017-2018
Class 10 Science Sample Papers 2016-2017
Class 10 Science Sample Papers 2015-2016