+--+--+--+--+
     |1 |2 |3 |4 |       
  +--+--+--+--+--+--+
  |5 |           |6 |    
  +--+--+--+--+--+--+
     |7 |8 |9 |10|
     +--+--+--+--+

1. A sat opposite G who was sitting next to C.
2. C sat opposite F.
3. D sat between F and H, but not in seat 8 or 9.
4. E sat between G and A and opposite J.
5. I sat between B and C but not in seat 9.
6. The host sat in seat 5.

The clues are

1) AXG<=>C

2) CXF

3) FDH, D->8,9X

4) GEA, EXJ

5) BIC, I->9X

6) Host sits on seat no 5

from 1) & 5 E,J= 5,6 and A,G= 1,4,7,10 and C=2,3,8,9 hence F=2,3,8,9

from 3) D = 2,3 and F=2,3 H=1,4 and C=8,9

from 5) B=7,10 and I=8 hence B=7, C=9, F=3, D=2, H=1 so A,G = 4,10 hence E=6 and Host J=5