1.

The appearance of potash-lime glass in colour is:(a) Black(b) Green to colourless(c) Reddish brown(d) WhiteThis question was addressed to me during an interview.My query is from Glass in chapter Materials for Construction of Basic Civil Engineering

Answer»

The correct CHOICE is (b) Green to colourless

Easiest explanation: The potash-lime glass has a greenish COLOUR as a RESULT of high IRON content in the sand used to MAKE the glass.



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