Gst registraion for tax free goods if supplied inter state ?

Yes...

No u are not liable for registration if you doing exempted supplies

As per Section 23 CGST Act :Persons not liable for registration.

[a] any person engaged exclusively in the .business of supplying goods or services or both that are not liable to tax or wholly exempt from tax under this Act or under the Integrated Goods and Services Tax Act;

No you are not liable to register for GST. Take online book sellers for example. Since books are Nil rated, sellers solely dealing in books are not asked for GST registration by e-commerce websites. Hopefully this should make things clear for you.

Yes... I agreed to Mr. Pankaj Rawat.,

Sorry for Wrongly replied... Also It's mistakenly replied...

After I rectified ths one. But, No way reply 2ndly in the Mobile App...