Question

Which is not a type of glass ? A. Soda-lime glass
B. Float glass
C. Borosilicates
D. Tempered glass
E. Silicates
Choose the correct answer from the options given below :

• A. A and B Only
• B. B and D Only
• C. E Only
• D. C Only

Hint:

All glass types are derived from silicates, but “silicates” itself is not a glass type—it is a chemical category.

Answer 1

The Correct Option is C

Concept: Glass is an amorphous solid material typically made by cooling molten silica-based mixtures. Different types of glass are classified based on composition and manufacturing process.

Step 1: Understanding each option.

• Soda-lime glass: Most common type of glass used in windows and bottles.
• Float glass: Manufactured by floating molten glass on molten tin for uniform thickness.
• Borosilicate glass: Heat-resistant glass used in laboratory equipment.
• Tempered glass: Strengthened glass produced by thermal or chemical treatment.
• Silicates: A broad class of minerals, not a specific type of glass.

Step 2: Identifying the incorrect category.
Silicates refer to a group of compounds containing silicon and oxygen. While glass is made from silicates, the term itself does not represent a specific type of glass.

Step 3: Eliminating correct types.
All the following are valid types of glass:
• Soda-lime glass
• Float glass
• Borosilicate glass
• Tempered glass

Step 4: Final evaluation.
Only “Silicates” is not a type of glass but rather a broader chemical classification. Final Conclusion:
Thus, the correct answer is E Only.