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Students of a school had gone for an overnight camp. They gathered some wood and wanted to light a fire. They tried to light the fire with a matchstick but the wood would not catch fire. Someone suggested pouring kerosene over the wood, but no kerosene was available. Someone else suggested setting dry leaves on fire first with the matchstick and using it to light the wood. But they could not find any dry leaves.Then Tanya brought a bottle of Vaseline(petroleum jelly) that she had brought with her to apply on her skin. She smeared it over a piece of cloth and set it on fire. She used it to light the wood.Answer these questions.1. Why could the wood not be set on fire by the matchstick?2.How would kerosene have helped?3.Why were dry leaves suggested and not green leaves?4.Which two properties of petroleum jelly were used to light the fire?

Answer» Students of a school had gone for an overnight camp. They gathered some wood and wanted to light a fire. They tried to light the fire with a matchstick but the wood would not catch fire. Someone suggested pouring kerosene over the wood, but no kerosene was available. Someone else suggested setting dry leaves on fire first with the matchstick and using it to light the wood. But they could not find any dry leaves.

Then Tanya brought a bottle of Vaseline(petroleum jelly) that she had brought with her to apply on her skin. She smeared it over a piece of cloth and set it on fire. She used it to light the wood.

Answer these questions.

1. Why could the wood not be set on fire by the matchstick?

2.How would kerosene have helped?

3.Why were dry leaves suggested and not green leaves?

4.Which two properties of petroleum jelly were used to light the fire?


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