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Q.1 | Q.2 | Q.3 | Q.4 | Q.5 | Q.6 | Q.7 | Q.8 | Q.9 | Q.10 |
Q.1 |
A farmer in a region with poor soil quality is struggling to grow healthy crops. What can be done to improve agricultural productivity in this area? |
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Q.2 |
As part of their school's eco-friendly art exhibition, students were challenged to showcase artwork using only recycled or upcycled materials. What type of project would align best with the theme of waste reduction? |
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Q.3 |
As Ava traversed the city streets, she met a wise engineer named Marcus. He explained how crude oil was refined into various fuels like gasoline and diesel. What is the primary use of crude oil in energy production? |
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Q.4 |
In a remote village, a community initiative introduced a water purification system, significantly improving water quality. Consider the multifaceted impact of the improved water quality on the village. |
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Q.5 |
Harry is drinking a soda from a can. He finishes the soda and throws the can away. What are some things that Harry can do to reduce, reuse, or recycle? |
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Q.6 |
What are some common sources of marine pollution? ![]() |
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Q.7 |
A local farmer notices a decrease in insect populations in his fields. This decline coincides with the decrease in crop yield as well. He remembers recently switching to a new type of pesticide. |
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Q.8 |
Alex noticed an increase in the demand for water and energy due to urbanisation. What could be a potential environmental consequence? |
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Q.9 |
Sarah noticed that her house generated a lot of waste daily, especially paper. She wanted to help reduce this waste. Which action would be the best way for Sarah to contribute to waste reduction? |
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Q.10 |
A research institute is discussing the importance of mangrove forests. What is the crucial role of mangroves in coastal ecosystems? |
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Answers to Previous Year Questions from CREST Olympiads:
Q.1 : c | Q.2 : d | Q.3 : b | Q.4 : b | Q.5 : d | Q.6 : a | Q.7 : b | Q.8 : b | Q.9 : b | Q.10 : b