Corrosion of silver results in the formation of
- silver chloride
- pure silver
- silver nitrate
- Silver Sulfide
The Correct Option is D
Solution and Explanation
The corrosion of silver, also known as tarnishing, is due to the reaction of silver with sulfur-containing compounds in the air, such as hydrogen sulfide ($H_2S$). This reaction results in the formation of a black coating of silver sulfide ($Ag_2S$) on the surface of the silver.
Top Questions on Corrosion
The figure shows a rod PQ, hinged at P, rotating counter-clockwise with a uniform angular speed of 15 rad/s. A block R translates along a slot cut out in rod PQ. At the instant shown the distance \( PR = 0.5 \, {m} \) and \( \theta = 60^\circ \). The relative velocity of R with respect to the rod PQ is 5 m/s at the instant shown. The relative acceleration of R with respect to the rod PQ is zero at the instant shown.
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A force of \( P = 100 \, {N} \) is applied at the ends of the pliers as shown in the figure. Neglecting friction, the force exerted by the upper jaw on the workpiece is ........... N (in integer).
- For a certain linear elastic isotropic material, the Young’s modulus is 140 GPa and the shear modulus is 50 GPa. The Poisson’s ratio for the material is ........... (rounded off to two decimal places).
Consider a beam with a square box cross-section as shown in the figure. The outer square has a length of 10 mm. The thickness of the section is 1 mm. The area moment of inertia about the x-axis is ........... mm\(^4\) (in integer).
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