Consider the following statements:Glass can be etched or scratched by – McqOptions

MCQOPTIONS

1.	Consider the following statements:Glass can be etched or scratched by 1. Diamond 2. Hydrofluoric acid 3. Aquaregia 4. Cone,sulphuric acid Which of these statements are correct ?
A.	1 and 4
B.	2 and 3
C.	1 and 2
D.	2 and 4
Answer» D. 2 and 4

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