Materials attracted to a magnet, like iron or steel. Explanation: Only materials with magnetic properties respond to magnetic separation. For more please visit here: https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-9/

By churning the curd until the butter floats to the top. Explanation: Churning agglomerates fat, allowing it to be skimmed from the remaining liquid. For more please visit here: https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-9/

Churning separates butter from curd by stirring, causing lighter butter to float. Explanation: The vigorous movement causes fat particles to clump together, separating from buttermilk. For more please visit here: https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-9/