JEE Mains 2020 Model Paper 1 New Pattern
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Question : 74 of 75
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A solution of 0.640 g of azulene in 100.0 g of benzene boils at 80.23 °C . The boiling point of benzene is 80.10 °C; the b K is 2.53 °K /molal. What is the molecular weight of azulene?
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