Which raw materials are used in the manufacturing of flat glass?
What will be an ideal response?
Sand (silicon dioxide, also called silica) is the primary raw material. The other two raw materials are sodium oxide,
and calcium oxide (lime).
You might also like to view...
Leakage and diffusion of a gas (such as air or water vapor) through a building envelope are two different mechanisms because
A) leakage occurs through the body of the component or material(s) of the envelope, while diffusion occurs through holes, cracks, and openings in the envelope. B) diffusion does not occur through a building envelope while leakage does. C) leakage refers to water leaking through the envelope (such as rainwater or subsoil water) and diffusion refers to the passage of water vapor through the envelope. D) leakage occurs through holes, cracks, and openings in the envelope, while diffusion occurs through the body of envelope component or its material(s). E) none of the above.
When charging a lead-acid (flooded-type) battery, ________________
A) The battery temperature should not exceed 125°F (hot to the touch) B) The initial charging rate should be about 35 amperes for 30 minutes C) The battery may not accept a charge for several hours, yet still be a good (serviceable) battery D) All of the above
The side gears are attached to ________
A) Pinion gear B) The ring gear C) The axles D) None of these
What is the instantaneous voltage at 42° on a 230 VP sine wave?
A) 149 V B) 115 V C) 154 V D) 76.1 V