Match the column I with column II and mark the appropriate choice. Column I Column II (A) Syngas (i) Na₆P₆O₁₈ (B) Calgon (ii) NaAlSiO₄ (C) Permutit (iii) CO + H₂ (D) Producer gas (iv) CO + N₂

Syngas is also called as synthetic gas. It consists of 2 H , CO, 4 CH , water vapours. Calgon is the complex salt of sodium with formula 3 6 ( ) NaPO . It is used to remove hardness of water. Permutit is a zeolite. It contains orthosilicate of sodium aluminium compound. Producer gas is the combination of 2 2 , , CO H N . It has lower heating value and can be used as fuel. Therefore, b is the correct answer.