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Physics

What enables us to write on the black board with chalk.?

A. Gravity B. Cohesion C. Adhesion D. Viscosity

and why?

Note by Akash Sinha
4 years ago

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Adhesion, the chalk sticks to the black board because of that. Lokesh Sharma · 4 years ago

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@Lokesh Sharma thanks for it. Akash Sinha · 4 years ago

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why Viscosity is one of the options ??? Rushi Rokad · 4 years ago

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@Rushi Rokad ok forget it but tell me the write one Akash Sinha · 4 years ago

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