Hello Azm
R2 will query R1 to find an alternate route to 2.2.2.0/24. R1 will not query any routers because it is not connected to any. Queries will not be sent back to the original router from which it was received, so R1 will not “re-query” R2. R1 will only send queries IF one of its connected networks go down.
If R1 is configured as a Stub and loopback 0 goes down, R2 will NOT send a query to R1 since it “knows” that because it is a stub, it cannot possibly have an alternate route to 2.2.2.0/24. Again, R1 will not send a query to R2 unless one of its connected networks go down. If that happens, then yes, R1 will send a query to R2.
I hope this has been helpful!
Laz