Question

1 Drop a paper of A-4 size and a piece of wood/plastic about 2-3 inches long.
from a height more than 10 feet. Note the time for both to hit the ground. Now repeat
the experiment by folding the paper once, twice, thrice... (as many time as you can)
Why every time the travel time reduces for paper and remains the same for
wooden/plastic piece. Does the paper at any stage hit ground before wooden plastic
piece? If yes, then why?
(3 marks)​

Answer 1

Answer:

Sulfuric acid is sometimes referred to as the “king of chemicals” because it is produced worldwide in such large quantities. In fact, per capita use of sulfuric acid has been taken as one index of the technical development of a country. Annual production in the United States, which is the world’s leading producer, is well over 39 billion kg (86 billion pounds). It is the cheapest bulk acid.