Chemistry
Terylene is a condensation polymer of ethylene glycol and which acid?

Phthalic acid
Terephthalic acid
Benzoic Acid
Salicylic acid

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Chemistry
Photo chemical smog is a resultant of the reaction among

NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight
CO, CO2 and NO2at low temperature
CO, O2 and peroxy acetyl nitrate in the presence of Sunlight
High concentration of NO2, O3, and CO in the evening

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