In comparison to the 1960s, by how many times has the ocean noise increased?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 10 times
Note: The number ten is not in any line of the pollution chapter. It is in the heading of a small box, so look at the big letters in every box too.
NCERT (2026-27):
Box: Do You Know? |
