JEE Main 2020 (Online) 7th January Evening Slot | Some Basic Concepts of Chemistry Question 150 | Chemistry

Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO₂ and gaseous product. MnO₂ reacts with NaCl and concentrated H₂O₄ to give a pungent gas Z. X, Y and Z, respectively, are :

KMnO₄, K₂MnO₄ and Cl₂

K₂MnO₄, KMnO₄ and SO₂

K₃MnO₄, K₂MnO₄ and Cl₂

K₂MnO₄, KMnO₄ and Cl₂

JEE Main 2019 (Online) 12th April Evening Slot

MCQ (Single Correct Answer)

-1

25 g of an unknown hydrocarbon upon burning produces 88 g of CO₂ and 9 g of H₂O. This unknown hydrocarbon contains :

18 g of carbon and 7 g of hydrogen

20 g of carbon and 5 g of hydrogen

22 g of carbon and 3 g of hydrogen

24 g of carbon and 1 g of hydrogen

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