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RRB NTPC Prelims Model Paper 2 with solutions

Question : 1 of 101

Marks: +1, -0

Carbon : Diamond :: Corundum : ?

Solution:

Concept:

Analogy based on a substance and its specific form or variety.

Explanation:

\mathrm{Diamond}

is an allotrope of the element

\mathrm{Carbon}

So the relationship is: substance to its specific form.

\mathrm{Corundum}

is a mineral.

\mathrm{Ruby}

is the red gem variety of

\mathrm{Corundum}

Thus,

\mathrm{Corundum} : \mathrm{Ruby}

follows the same pattern.

Answer:

\mathrm{Ruby}

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