By 2011, scientists have been able to identify three separate holes in the Ozone layer. One in Tibet, one in the North Pole and one in Antarctica. The size of these ozone holes were calculated using the Dobson Meter and measured in Dobson units.

True

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False

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Solution

The correct option is B False
The size of the ozone hole is calculated in $k m^{2}$ since it pertains to the area where the hole is created. The size of the hole does not pertain in the thickness of the Ozone layer, which is calculated using the Dobson Meter.

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Question 14
‘Ozone-hole’ means

(a) a large sized hole in the ozone layer
(b) thinning of the ozone layer
(c) small holes scattered in the ozone layer
(d) thickening of ozone in the ozone layer

Since decades, Antarctica has been a place of intense scientific research. Various countries have established their bases in Antarctica to study the impact of climate change. The ozone hole was discovered in 1985 in Antarctica. Which of the following can be associated with ozone hole?

Q. The ozone layer: Between 15 and 50 km above the earth is a thin layer of gas called 'ozone'. It protects the earth from most of the sun's harmful ultraviolet radiation. Too much radiation causes blindness in animals and skin cancer in people. In 1985, scientists discovered a hole in the ozone layer in the Antartica. They have recently discovered a smaller hole over the arctic. The ozone layer is also becoming thinner over other locations of the earth too. Scientists believe that over the last 10 years about 30% of the ozone layer has disappeared. This damage is caused by chemicals. Choose the right statement(s) from the following.

Q. The hole in ozone layer results in:

Q. Given is a representation of a type of pollution. Study the picture and answer the question.
State one gaseous compound that leads to the depletion of the ozone layer and creates 'Ozone holes'.

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By 2011, scientists have been able to identify three separate holes in the Ozone layer. One in Tibet, one in the North Pole and one in Antarctica. The size of these ozone holes were calculated using the Dobson Meter and measured in Dobson units.

The correct option is B FalseThe size of the ozone hole is calculated in km2 since it pertains to the area where the hole is created. The size of the hole does not pertain in the thickness of the Ozone layer, which is calculated using the Dobson Meter.

The correct option is B False
The size of the ozone hole is calculated in $k m^{2}$ since it pertains to the area where the hole is created. The size of the hole does not pertain in the thickness of the Ozone layer, which is calculated using the Dobson Meter.