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Maharashtra State BoardSSC (English Medium) 8th Standard

Which are the main ingredients of glass? - Marathi (Second Language) [मराठी (द्वितीय भाषा)]

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Question

Which are the main ingredients of glass?

Answer in Brief

Solution

Main ingredients of glass are as follows:

  • Sand or Silica
  • Sodium Carbonate
  • Lime or Calcium Oxide
  • Other Additives
  • Lead glass: mixture of sand, soda, limestone and lead oxide
  • Silica glass: using silica only
  • Borosilicate: mixture of sand, soda, boric acid, aluminium oxide
  • Alkali silicate glass: mixture of sand, soda
  • Optical glass: mixture of sand, soda, limestone, barium oxide and boron
  • Boron – this changes the thermal and electrical properties of the glass and is used to make Pyrex glassware which can withstand extremes of heat and cold.
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Chapter 17: Man made Materials - Exercise [Page 121]

APPEARS IN

Balbharati Science [English] 8 Standard Maharashtra State Board
Chapter 17 Man made Materials
Exercise | Q 3.4 | Page 121
Balbharati Integrated 8 Standard Part 4 [English Medium] Maharashtra State Board
Chapter 4.3 Man Made Materials
Exercises | Q 3. d. | Page 93
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