What element did Joseph Priestley discover in 1774?
![](https://learnzilla.in/wp-content/uploads/2020/10/Priestley.jpg)
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What inorganic molecule is produced by lightning?
![](https://learnzilla.in/wp-content/uploads/2020/10/lightning-4013537_1280.jpg)
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What is the nearest Planet to the Sun?
![](https://learnzilla.in/wp-content/uploads/2020/10/sol.jpg)
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What is the largest known land animal?
![](https://learnzilla.in/wp-content/uploads/2020/10/savanna-predators-wild-animals-group-collage-savanna-predators-prey-wild-animals-group-137378296.jpg)
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What is the tallest type of grass?
![](https://learnzilla.in/wp-content/uploads/2020/10/grass.jpg)
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