GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What element is NOT abundant in the atmospheres of the other planets (because it is only released abundantly on Earth by life)?
A
Carbon Dioxide
B
Oxygen
C
Nitrogen
D
Hydrogen
Explanation: 

Detailed explanation-1: -Argon makes up about 1% of the atmosphere and comes mostly from the decay of potassium in the Earth’s crust. It is an inert gas, which means that it does not react with other chemicals.

Detailed explanation-2: -The other primary reason is that, unlike oxygen, nitrogen is very stable in the atmosphere and is not involved to a great extent in chemical reactions that occur there. Thus, over geological time, it has built up in the atmosphere to a much greater extent than oxygen.

Detailed explanation-3: -Oxygen, silicon, iron and aluminum are the most abundant elements in the Earth’s crust, accounting for 88.1% of its mass.

There is 1 question to complete.