In a certain code, "Black" means "Orange", "Orange" means "Violet", "Violet" means "Green", "Green" means "White", "White" means "Yellow" and "Yellow" means "Sky blue". In this code language, what is the colour of coal?

Introduction / Context:
This is a trick question combining a simple code mapping with basic general knowledge. Several colour names are reassigned, but the key is to focus on the actual colour of coal and then find the new coded name for that colour, not for the word itself.

Given Data / Assumptions:
Mappings in the code language:
"Black" → Orange.
"Orange" → Violet.
"Violet" → Green.
"Green" → White.
"White" → Yellow.
"Yellow" → Sky blue.
We know from general knowledge that coal is black in colour.

Concept / Approach:
We first identify the true colour of coal in the real world. Then we see which coded word corresponds to that colour. The rest of the chain involving other colours is largely a distraction for this particular question. We are not being asked for the image of some arbitrary word; we are asked for the new name of the real colour of coal.

Step-by-Step Solution:
Step 1: Coal is actually black in colour. Step 2: In the given coding scheme, the word "Black" is redefined to mean "Orange". That is, whenever someone in this code language talks about a black coloured object, they will use the word "Orange". Step 3: Since the question is asked in terms of the code language, we must answer using the new colour name. The physical colour of coal is unchanged (still black), but its coded colour name is now Orange.

Verification / Alternative check:
Note that no other mapping directly involves coal. The entire mapping is between colour words themselves. The only relevant connection is the one that attaches the original colour "Black" to the new word "Orange". That is sufficient to answer the question.

Why Other Options Are Wrong:
"Sky Blue", "Violet" and "Yellow" are all just further steps in the mapping chain among other colour words, not the new label for black. None of them is directly linked to the real colour of coal by the given definitions, so they cannot be correct answers here.

Common Pitfalls:
Some students ignore the coding and answer "black" from general knowledge, which does not match any option. Others misread the chain and think they must follow all steps until "Sky blue". The trick is to stop as soon as you reach the mapping for the original colour of the object in question.

Final Answer:
In this code language, coal is said to be Orange in colour.