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Q.

A metal catalyst in the form a square block has eight free valencies on each side as Shown.It is cut into four equal finely divided blocks. Thus, number of free valencies are x times in square block. What is value of x?

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answer is 2.

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Detailed Solution

Each block has now = 16 free valencies Thus, total free valencies on flour blocks 16 × 4= 64Initial free valencies on four sides = 32Thus,  =6432=2 times
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