लकड़ी का कौन सा भौतिक गुण उसके ग्रेन (रेशों) के साथ फटने (split) के प्रति उसके प्रतिरोध को निर्धारित करता 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?