The statement is true. If a mineral lacks the presence of iron in it then it will be generally dimagnetic. It means non iron minerals do not show magnetic property in general. There are some minerals like serpentine do show some magnetic susceptibility, however this is negligible as compared to iron minerals hence the ores with no magnetic are generally diamagnetic.
The most viscous liquid between milk, apple juice, water, and syrup will be the syrup. The syrup is the thickest of these choices. A viscous liquid is slower to pour. The thicker the product is the more viscous it is. Water, milk, and apple juice all flow faster than syrup would. The correct answer is A: syrup.
