Acid rain……………………
a) increase in soil acidity
b) effect fertility of soil
c) destroys vegetation
d) cause stone cancer
e) all of these
The main cause of acid is the oxides of ………
a) sulphur
b) nitrogen
c) sodium
d) both a and b
Ozone is found in………
a) troposphere
b) thermosphere
c) stratosphere
d) ionosphere
Ozone layer or stratospheric ozone is a high concentration of ozone molecule on the height from……………
a) 10 Km
b) 30 km
c) 50 km
d) 30 to 50 km
The oxygen molecule is broken down to oxygen atom which on combination with oxygen molecule from ozone this breakdown is
a) due to UV ray of sun
b) due to x ray
c) due to light
d) none of these
The measurement unit defining ozone layer is
a) pascle
b) dobson
c) km
d) nm
