Why is it possible to write on rough blackboard with chalk ?
Why is it possible to write on rough blackboard with chalk ?
Harshit Singh , 4 Years ago
Grade 12th pass
8 grade science> Why is it possible to write on rough blac...
1 AnswersPawan Prajapati
Last Activity: 4 Years ago
The chalk is rubbed on the rough blackboard while writing. In the process soft chalk particles get stuck to the irregularities of rough blackboard susfare making the writing visible.
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