Can we create non primary key as cluster index

Yes we can do this on non-primary key column but that column must be unique and the primary key column of that table must have non-clustered index because there is one cluster index in table. By default primary key column contains clustered index so its recommended to create such non-primary key clustered index column first and then should create primary key column so in such case the primary key on that column will be with non-clustered. But its highly re
commended to create primary key column as a clustered indexed column.