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Q.

Which of the following shows lesser analogy ?

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a

Li-Mg

b

Be-Al

c

B-Si

d

Na-Ca

answer is D.

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Detailed Solution

  • Lithium(Li)-Magnesium(Mg), Beryllium(Be)-Aluminium(Al), Boron(B)-Silicon(Si) shows diagonal relationship. These pairs have similar properties.
  • Taking an example of boron and silicon, they are semiconductors. On the other hand there is no such relationship between Na-Ca. So, it has lesser analogy among them.

 

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Which of the following shows lesser analogy ?