EVERYDAY SCIENCE

Detailed explanation-1: -Diamond is the hardest mineral; no other mineral can scratch a diamond. Quartz is a 7. It can be scratched by topaz, corundum, and diamond. Quartz will scratch minerals that have a lower number on the scale.

Detailed explanation-2: -Talc is the softest: it can be scratched by all other materials. Gypsum is harder: it can scratch talc but not calcite, which is even harder. Mohs’s scale of hardness is given below. It shows the hardness of different minerals on a scale of 1–10.

Detailed explanation-3: -Scientists have found a mineral stronger than diamond Scientists have found a mineral stronger than diamond. They say lonsdaleite could be used to fortify industrial tools like drill bits and saw blades-AND teach us about the evolution of earth.

Detailed explanation-4: -It is well-known since the late 20th-century that there’s a form of carbon that’s even harder than diamonds: carbon nanotubes. By binding carbon together into a hexagonal shape, it can hold a rigid cylindrical-shaped structure more stably than any other structure known to humankind.

Detailed explanation-5: -The hardness of diamond is highest of all known material. So diamond can scratch on glass but it is not only material that scratch on glass. Sapphire, Moissanite, Tungsten carbide, Cubic boron nitride etc. can scratch on glass.