JEE Main 2019 (Online) 9th April Morning Slot | Some Basic Concepts of Chemistry Question 123 | Chemistry

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JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

The correct order of the oxidation states of nitrogen in NO, N₂O, NO₂ and N₂O₃ is :

NO₂ < NO < N₂O₃ < N₂O

NO₂ < N₂O₃ < NO < N₂O

N₂O < NO < N₂O₃ < NO₂

N₂O < N₂O₃ < NO < NO₂

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

For a reaction,
N₂(g) + 3H₂(g) $$ \to $$ 2NH₃(g) ;
identify dihydrogen (H₂) as a limiting reagent in the following reaction mixtures.

56g of N₂ + 10g of H₂

14g of N₂ + 4g of H₂

28g of N₂ + 6g of H₂

35g of N₂ + 8g of H₂

JEE Main 2019 (Online) 8th April Evening Slot

MCQ (Single Correct Answer)

-1

The percentage composition of carbon by mole in methane is :

80%

20%

75%

25%

JEE Main 2019 (Online) 12th January Evening Slot

MCQ (Single Correct Answer)

-1

8 g of NaOH is dissolved in 18g of H₂O. Mole fraction of NaOH in solution and molality (in mol kg^–1) of the solution respectively are -

0.2, 11.11

0.167, 22.20

0.167, 11.11

0.2, 22.20

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