1) How many planets are there in our Solar System a) 8 b) 9 2) Which is the biggest planet in our Solar System. a) Jupiter b) Saturn 3) Which is the hottest planet in our Solar System. a) Mercury b) Venus 4) Which is the smallest planet in our Solar System a) Mercury b) Mars 5) Which is the coldest planet in our Solar System a) Uranus b) Neptune

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