Question

glass wool obtained by forcing molten mass alkali free glass through holes having diameter
1) 0.0005cm
2)0.005cm
3)0.05cm
4)none of these
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Answer 1

Explanation:

3.

0.05cm

hope this helps you

Answer 2

Glass wool obtained by forcing molten mass alkali free glass through holes having diameter 0.0005cm

Explanation:

• Glass wool is crafted from sand, limestone and soda ash with a excessive percentage of recycled glass, plus other minerals.
• These are melted, spun into fibres and combined with natural resins before curing into products.
• The mineral raw substances are melted at about 1400 to 1500 °C.
• Glass wool is a material that offers exceptional insulation in opposition to heat and cold.
• It is shaped by the direct melting process.
• Air and steam jets are used on this process.

Answer = Option (A) 0.0005cm