The ozone gas in ………… combines and forms a layer called the ozone layer.
a) stratosphere
b) thermosphere
c) mesosphere
d) troposphere
The ozone layer saves the earth and the living organisms from harmful UV radiations of...…
a) earth
b) Sun
c) plant
d) sky
If all ozone around the earth is condensed, it will form a layer of …………thickness on earth surface.
a) 1.3mm
b) 1.4mm
c) 2.4 mm
d) 2.5 mm
The color of ozone is …………
a) pink
b) green
c) bluish
d) blank
The ozone is soluble in…………
a) water
b) turpentine oil
c) CS2
d) all of these
In stratosphere, the concentration of ozone reaches to maximum concentration of ………
a) 6ppm
b) 7ppm
c) 9ppm
d) 10ppm
