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{:(,"Column I",,"Column II"),((A),"Dimen...

`{:(,"Column I",,"Column II"),((A),"Dimensional variable",(p),pi),((B),"Dimensionless variable",(q),"Force"),((C),"Dimensional constant",(r),"Angle"),((D),"Dimensionless constant",(s),"Gravitational constant"):}`

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The correct Answer is:
(i) (b), (ii) (c ), (iii) (d), (iv)(a)
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