All Exams Test series for 1 year @ ₹349 only
Question

The atmospheric component that remains largely unreactive is _____________.

This question was previously asked in
RRB JE 2025 CBT 2 Mechanical and Allied Engg Question Paper English (2-Jul-2026) (Shift-1)
The correct answer is

Argon

Earth's atmosphere consists of: Nitrogen (~78%), Oxygen (~21%), Argon (~0.93%), Carbon dioxide (~0.04%), and traces of other gases.

Argon is a noble gas (Group 18) with a completely filled outer electron shell, making it extremely unreactive under normal conditions.

While Nitrogen is also relatively inert, it does form compounds (ammonia, nitrates) under high energy conditions. Argon has no known stable compounds and does not participate in any atmospheric chemical reactions — it is the most unreactive.

Was this answer helpful?

Similar Questions

  1. What is the main reason sulfur dioxide irritates the upper respiratory mucous membrane?

  2. In a real-life scenario, a chemist discovers a compound with the formula $CH_3 CH_2 CH(CH_3)CH_2 CH_2 OH$. What is the correct IUPAC name for this compound? 

  3. A student accidentally spills some hydrochloric acid on a table. Which substance should be used to neutralise the acid safely?

  4. According to Thomson’s model, how are electrons arranged in an atom?

  5. What is the general formula of alkenes?

  6. If 10 grams of salt are dissolved in 100 mL of water, which component is the solute?

  7. Consider the following statements regarding chemical reactions and choose the correct option. 

    Statement I: Every reaction in which two or more reactants combine to form a single product is classified as a combination reaction regardless of heat change. 

    Statement II: The reaction $CaO(s) + H_2O(l) → Ca(OH)_2 (aq)$ + heat is both a combination 2 2 reaction and an exothermic reaction.

  8. The atmospheric component that remains largely unreactive is _____________.

  9. Which condition is required for a displacement reaction between a metal and salt solution?

  10. The atmospheric component that remains largely unreactive is _____________.


Important Questions from Chemistry

  1. What is deposited on iron in the process of Galvanization?

  2. Which element is used for making solar cells?

  3. Which gas is flushed in a bag of chips to prevent the chips from getting oxidized?

  4. Terylene is a type of:

  5. Who was the first Indian lady scientist who worked with organic chemistry and medicinal plant?

Need Expert Advice?
Test Series
RRB JE img
Railways
RRB JE (CBT 1 + CBT 2) 2026 Mock Test Series
1509 Tests 19 Tests Free
1336 Attempts
4.3(142)
English, Hindi

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App