A mixture of potassium and calcium silicates formed _____?

پوٹاشیم اور کیلشیم سلیکیٹس کا مرکب _____ تشکیل دیا گیا ہے؟

Soft glass

Flint glass

Hard glass

None of these

A mixture of potassium and calcium silicates forms hard glass.

This is known for its high resistance to heat and chemicals.

It is stronger than soft glass due to its composition.