A. Sulphur
B. Selenium
C. Bromine
D. Phosphorus
Submitted by: Sufi Mukhtiyar
A. Sulphur
B. Selenium
C. Bromine
D. Phosphorus
Submitted by: Sufi Mukhtiyar
A. Jena glass
B. Soda glass
C. Pyrex glass
D. Crookes glass
Submitted by: Sufi Mukhtiyar
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