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Which of the below material of window has life span of 50 years?(a) PVC(b) Steel(c) UPVC(d) AluminiumI got this question in semester exam.This interesting question is from Doors and Windows topic in chapter Building Construction of Basic Civil Engineering

Answer» CORRECT answer is (C) UPVC

Easiest EXPLANATION: UPVC has very good thermal resistance and durability.The maintenance required is very low. It has an average cost and can thus stay for 50 years.


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