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Engineering

Match List -I with List II: List - I: Mechanism steps (A) [Diagram: Aromatic ring with NH2, gaining H+, forming NH2+ and N-H bond]; (B) [Diagram: Aromatic ring with H, gaining H+, forming H+ and C-H bond]; (C) [Diagram: Aromatic ring with CN, gaining CN-, forming C-CN bond]; (D) [Diagram: N=O group, gaining O=N, forming N-O bond with positive charge]. List - II: Effect (I) - E effect (II) - R effect (III) + E effect (IV) + R effect Choose the correct answer from the options given below:

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A metal wire of uniform mass density having length L and mass M is bent to form a semicircular arc and a particle of mass m is placed at the centre of the arc. The gravitational force on the particle by the wire is: [Diagram: Semicircular arc with mass m at center]

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