TestUstad
Asked in UHS MDCAT 2019 2019Moderate

Free Nitrogen and Oxygen are present in atmosphere but they do not react with each other under normal conditions because:

Correct answer: D. Nitrogen is highly inactive gas

  • A. Nitrogen requires a catalyst
  • B. Oxygen is very inactive
  • C. Oxygen is found in less concentration
  • D. Nitrogen is highly inactive gas

Explanation

Option A is a true statement, but it does not, by itself, explain why nitrogen does not react under normal conditions; Nitrogen is highly inactive so, it requires a catalyst because of its inactivity/inertness.Option B is incorrect as oxygen is quite reactive, taking part in numerous reactions such as combustion reactions.Option C is a true statement because it is found in less concentration than nitrogen, but that should not, in itself, prevent a reaction from taking place under normal conditions.Option D is correct. Nitrogen is nonpolar and has a triple bond, which requires an enormous amount of energy to overcome so, under normal conditions, it cannot react with oxygen; it requires a catalyst and heat energy to overcome its natural inertness.

Last updated

About Periodic Properties and Trends

Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.

Practise s-Block and p-Block Elements

1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free s-Block and p-Block Elements testAll s-Block and p-Block Elements MCQs

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

AKU Chemistry45 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQs

Related questions

2. Law of octaves was proposed by

7th period of the periodic table contains normal elements:

(A), (B) and (C) are elements in the third period. The oxide of(A) is ionic, that of (B) is amphoteric and that of (C) is a giant molecule (covalent network). (A), (B) and (C) have atomic numbers in the order:

(A), (B) and (C) are elements in the third short period. Oxide of (A) is ionic, that of (B) is amphoteric and of (C) a giant molecule. (A), (B) and (C) have atomic numbers in the order of:

A gas that reacts with CaO and not with NaHCO3 is: