Questions › Category: Civil Engineering › According to ISI, bitumen is classified into 0 Vote Up Vote Down VideRime Staff asked 5 years ago According to ISI, bitumen is classified into a) 2 grades b) 4 grades c) 8 grades d) 10 grades Building Materials MCQs Set-12 Share this Now with Friends: Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram More Related