ANSWER THE FOLLOWING IN ONE WORD OR SENTENCE.
1. Name the gas present in bulbs.
2. Name the natural magnet found in rocks.
3. What is the composition of air?
4. Name the two types of venations.
Answers
Answer:
Neon
Loadstone
78% nitrogen 21% oxygen 1% other gas
Answer:
1.Filling a bulb with an inert gas such as argon or nitrogen slows down the evaporation of the tungsten filament compared to operating it in a vacuum.
2.A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through lodestones. ... Lodestone is one of only a very few minerals that is found naturally magnetized.
3.Air is mostly gas
So what is air, exactly? It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.
4.There are two types of venation, reticulate and parallel venation.