RM ISI indexing

What is ISI index?

ISI(international scientific indexing) provides the services of a huge amount of database containing a large number of authentic journals, conferences etc.

How to check that a journal or conference is ISI indexed or not?

You can visit the following link and search the journal name here. 

Check ISI index of a journal

Why i must need to publish my paper in ISI indexed journal?

Because ISI indexed journal are well recognized in scientific community.