IELTS Reading – True, False, Not Given – Example 1

Sample Reading Passage:

The concept of releasing aerosol sprays into the stratosphere above the Arctic has been proposed by several scientists. This would involve using sulphur or hydrogen sulphide aerosols so that sulphur dioxide would form clouds, which would, in turn, lead to global dimming. The idea is modelled on historic volcanic explosions, such as that of Mount Pinatubo in the Philippines in 1991, which led to a short-term cooling of global temperatures by 0.5 °C. Scientists have also scrutinised whether it’s possible to preserve the ice sheets of Greenland with reinforced high-tension cables, preventing icebergs from moving into the sea. Meanwhile, in the Russian Arctic, geoengineering plans include the planting of millions of birch trees. Whereas the region’s native evergreen pines shade the snow and absorb radiation, birches would shed their leaves in winter, thus enabling radiation to be reflected by the snow. Re-routing Russian rivers to increase cold water flow to ice-forming areas could also be used to slow down warming, say some climate scientists.

Questions:

1. Many scientists thought it was irrelevant to release the aerosol sprays into the stratosphere above the Arctic.

2. Sulphur dioxide aerosols will lead to global dimming.

3. Climate scientists say that Re-routing Russian rivers will not only increase the water flow in the ice-forming areas but will also help in slowing down the warming.

4. Planting of birch trees in the Arctic region will absorb the radiation.

5. The historic volcanic explosions on Mount Canlaon in the Philippines occurred in the year 1991.

Answers:

1. Many scientists thought it was irrelevant to release the aerosol sprays into the stratosphere above the Arctic – False

2. Sulphur dioxide aerosols will lead to global dimming – True

3. Climate scientists say that Re-routing Russian rivers will not only increase the water flow in the ice-forming areas but will also help in slowing down the warming – True

4. Planting of birch trees in the Arctic region will absorb the radiation – Not given

5. The historic volcanic explosions on Mount Canlaon in the Philippines occured in the year 1991 – True

Explanations

For the first question, from the passage, we come to know that several scientists proposed the concept of releasing aerosol sprays into the stratosphere above the Arctic. Instead, the question has been twisted, which says that the scientists considered the concept as irreverent. So, the statement is False.

For the second question, it is clearly mentioned in the passage that sulphur dioxide aerosols will form a cloud leading to global dimming. “Dimming refers to the reduction in the amount of global direct irradiance at the Earth’s surface. So, the statement is True.

For the third question, it is mentioned in the passage that the climate scientists have said that Re-routing Russian rivers will increase the cold water flow in the ice-forming areas, which will also help slow down the warming. So, the statement is True.

For the fourth question, it is not mentioned anywhere in the passage that the planting of birch trees will absorb the radiation. So, it is Not Given.

For the fifth question, it is clearly stated in the passage that the historic volcanic explosions on Mount Pinatubo in the Philippines occured in the year 1991. So, the statement is True.

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