Where can I find mock test for jee mains??

You may try out these two alternatives:

1. Online (weekly/monthly) test on topper app (always available).

Online Study Material & Tuition Classes for CBSE, ICSE, State Boards, NEET, IIT JEE, Olympiad, NDA & more - TopperLearning

1. JEE Main Mock Test 2018 (will be available soon)– CBSE has released the JEE Main 2018 mock test on December 13, 2017. The mock test of JEE Main 2018 is a computer-based test which will provide all JEE Main exam aspirants with a genuine experience of how the upcoming examination will be. Using the JEE Main mock test 2018, the candidates will be able to know the detailed exam pattern, the procedure of the test and more information about the examination which will be conducted on April 15 and 16, 2018 . Through the mock test of JEE Main 2018, the candidates will be able to prepare and strategize themselves better for the examination. Check out the following link for complete guidance to JEE MAIN MOCK TEST 2018:

JEE Main Mock Test 2018

All the best for JEE 2018!

Dear shafali
There are several websites which give video lectures as well as sample papers for your practice.  You can simply ask Google and it will give you different websites which will provide with previous papers as well as practice papers and important dates and topics. You just have to take time and search them once.
All the best.

Hey,

Here is the link for free Jee mock:
https://www.embibe.com/exams/free-jee-main-mock-test-series/undefined

I hope this will serve your purpose!