Tardigrade
Question
Biology
Which of the following is/are incorrect statements about ozone? i. The bad ozone is found in the upper part of atmosphere. ii. Thickness is measured in terms of Dobson units. iii. Ozone gas is formed by action of UV rays on molecular oxygen. iv. Ophthalmic problems may increase with ozone depletion.

Q. Which of the following is/are incorrect statements about ozone?
$i$ . The bad ozone is found in the upper part of atmosphere.
$ii$ . Thickness is measured in terms of Dobson units.
$iii$ . Ozone gas is formed by action of UV rays on molecular oxygen.
$i v$ . Ophthalmic problems may increase with ozone depletion.

1920 207 Environmental Issues Report Error

A

$iii$ only

B

$i$ and $i v$

C

$i, ii$ and $iii$

D

$i$ only

Solution:

Correct answer is (d) $i$ only