Bones softens when kept in acid for some hours

The answer would likely be true because bones dissolve when kept in acid for hours because the bone has a component, called calcium. With the calcium, it breaks down and dissolves in acid when it is dissolved in it, making the bone to dissolve the minerals, making the bones decalcified.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.