Question

Tell if 1 rational no multiply with 2 irrational no. So the product will be rational

Answer 1

Answer will be both rational and irrational depending upon the given number.
Example :1) root 2×root 2×2 is rational
: 2)root 3×root 2×2 is irrational

Answer 2

yes , this is not always possible .

for you answer example is here

= √3×√3 ×1
= 3