Ncert Exercises & Solutions

Which of the following statement is correct?

1.	Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.
2.	In the extraction of silver, silver is extracted as a cationic complex.
3.	Nickel is purified by zone refining.
4.	Zr, and Ti are purified by the van Arkel method.

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)