Question

2. A large deposit of graphite was discovered in 1565 on the approach to Grey
Knots from the hamlet of Sca Thwaite in Borrowdale parish, Cumbria, Englan
This particular deposit of graphite was extremely pure and solid, and it could
easily be sawn into sticks. It remains the only large-scale deposit of graphite
ever found in this solid form. Chemistry was in its infancy and the substance
was thought to be a form of lead. Consequently, it was called plumbago (Latin
for "lead ore"). Because the pencil core is still referred to as "lead", or a
"lead", many people have the misconception that the graphite in the pencil is
lead, and the black core of pencils is still referred to as lead even though it
never contained the element lead.
Q.1 What is the core of pencil made of? Lead or Carbon!
0.2 Why the core of pencil called lead?
Q.3 Define allotropy?
Q.4 Is there
any other pure and solid form of curbon found naturally? If yes.
name it​

Answer 1

Answer:

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