वह गुण जिसके कारण निरंतर प्रतिबल के तहत कोई पदार्थ लंबे समय तक धीरे-धीरे लेकिन लगातार विकृत होता रहता है, कहलाता 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?