Foundation
Chemistry Foundation
Coal Petroleum and Polymers
Question

The monomers of Terylene is/are -

HOCH2CH2OH + HOOCC6H4COOH 

none of these

HOCH2CH2OH + HOOC(CH2)4COOH

H2N(CH2)6NH2 + HOOC (CH2)4COOH

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Solution

Terylene is a polymer of tere pthalic acid (HOOCC6H5COOH) and ethylene glycol (HOCH2CH2OH)

⇒ attainment of ignition temperature. So fire may be extinguished by
⇒  removing all the combustible substance.
⇒  cutting off the supply of air.
⇒  cooling the burning substances below their ignition temperature.