Question

Q1. Study the following statements about ozone
i) it is essential for breathing of living organism.
ii)it is used to disinfect water
iii) it absorbs ultraviolet rays.
iv) its proportion in air is about is about 3%.

Which of the above statement are correct.
a) i, ii,and iii
b) ii and iii
c) i and iv
d) All of the above​

Answer 1

Answer:

b) 2nd and 3rd

Explanation:

because it's not essential for breathing and it's proportion is lesser than 1 %

nearly 0.00006%