The atmospheric component that remains largely unreactive 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.
What is the main reason sulfur dioxide irritates the upper respiratory mucous membrane?
A student accidentally spills some hydrochloric acid on a table. Which substance should be used to neutralise the acid safely?
According to Thomson’s model, how are electrons arranged in an atom?
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?
What is the general formula of alkenes?
If 10 grams of salt are dissolved in 100 mL of water, which component is the solute?
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.
Which condition is required for a displacement reaction between a metal and salt solution?
The atmospheric component that remains largely unreactive is _____________.
If 10 grams of salt are dissolved in 100 mL of water, which component is the solute?
Which of the following compounds is also called ‘Norwegian saltpeter’?
How many elements were known when Mendeleev started his work?
Which of the options given below is called laughing gas?
A. N 2O
B. CO 2
C. H 2O
D. SO 2
Stainless steel is
A. A compound
B. A mixture
C. An element
D. An alloy
What is the freezing point of water on Kelvin scale?
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