जब कोई सामग्री बिना किसी विशेष प्लास्टिक विरूपण (plastic deformation) के तनन प्रतिबल के तहत विफल हो जाती है, तो उसे _______ सामग्री के रूप में वर्गीकृत किया जाता है।

When a bottle of perfume is kept open in a corner of a room, its fragrance is soon felt in all parts of the room. This occurs due to which phenomenon?

The quantity of matter contained in a substance is termed as:

What is the ability of a material, particularly a metal, to resist surface wear, scratching, and abrasion called?