Terylene is a condensation polymer of ethylene glycol and which acid?
A). Benzoic Acid
B). Salicylic acid
C). Phthalic acid
D). Terephthalic acid
Terephthalic acid
Terylene is a condensation polymer of ethylene glycol and terephthalic acid and also called polyester.
1. Chemical formula of washing soda is
4. Domestic cooking gas consists mostly of
5. Stainless steel is an alloy of
6. In addition to hydrogen the other abundant element present on Suns surface is
7. Which of the following is not a donor atom?
8. Milk of Magnesia is a suspension of :
10. When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to