GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The surface of this planet appears red due to rusting iron in the rocks.
A
Mercury
B
Mars
C
Pluto
D
Venus
Explanation: 

Detailed explanation-1: -Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.

Detailed explanation-2: -The characteristic red colour of Mars is due to the iron oxide commonly known as rust.

Detailed explanation-3: -Mars has long been known for its rust. Iron on its surface, combined with water and oxygen from the ancient past, give the Red Planet its hue.

Detailed explanation-4: -Yen points out that an atom of meteoritic iron releases an electron when hit with ultraviolet radiation. If that electron is captured by oxygen in the Martian atmosphere before it can return to its source, the iron atom becomes oxidized, or rusted.

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