The last date for giving the VITEEE mock test is upto the last week of April
They may send the answers via mail. But don't concentrate on mock tests because they are pattern , syllabus and time management.
Try solving different sample papers available from different sources
Thank you :)

Importance of mock test

Attempting the JEE Main 2018 mock test, the candidates will be able to check the exam pattern in detail.

Time management can also be practiced through the mock test.

The candidates will be able to get a clearer picture of the type of questions that may come during the examination.

Practicing using the JEE Main mock test 2018 will let the candidates know the syllabus distribution and more in the examination.

It is test the above qualities. The answers of mock test will not be provided by CBSE.

Thank you :)