Author: Muhammad Ashhar khan

Which of the following is used in Pencils?

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A. Graphite
B. Silicon
C. Charcoal
D. Phosphorous

Submitted by: Muhammad Ashhar khan

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Which of the following is a Non Metal that remains Liquid at room temperature?

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A. Phosphorous
B. Bromine
C. Chlorine
D. Helium

Submitted by: Muhammad Ashhar khan

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