Which of the following can be melted with silica (silicon dioxide) to form common window glass?
A) carbon
B) carbonates of sodium and calcium
C) sodium sulfate and sodium sulfite
D) sand containing small amounts of magnesium
Correct Answer:
Verified
Q33: Roasting of metal ores in air
A) converts
Q34: Glass is annealed so that
A) silicon is
Q35: Which of the following is not an
Q36: Asbestos is
A) a glass.
B) a form of
Q37: Superconductivity is the result of
A) extremely low
Q39: A common element used in many semiconductors
Q40: Bauxite is the name of an aluminum
Q41: Which of the following is an example
Q42: The first transistor was constructed
A) in 1947
Q43: Examine the chloralkali cell given below.
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