JEE Main 2014 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2014 (Offline)
Question
The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of
their molecule is:
Choose an option
Show full solutionCorrect option: D
Correct answer
D7 : 32
Step-by-step explanation
Given ratio of mass of O2 and N2 = 1 : 4
Let mass of O2 = w
and mass of N2 = 4w
Number of moles of O2 =
Number of molecules of O2 = NA
Number of moles of N2 =
Number of molecules of N2 = NA
Ratio of molecules of O2 and N2
= NA : NA
= 7 : 32
Let mass of O2 = w
and mass of N2 = 4w
Number of moles of O2 =
Number of molecules of O2 = NA
Number of moles of N2 =
Number of molecules of N2 = NA
Ratio of molecules of O2 and N2
= NA : NA
= 7 : 32
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