A plastic which cannot be softened by heat is described a...
A plastic which cannot be softened by heat is described as
thermosetting
non-biodegradable
thermoplastic
malleable
Correct answer is A
No explanation has been provided for this answer.
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A solid begins to melt when? ...
Which of the following does not affect the rate of a chemical reaction?...
When ethanol is heated with excess concentrated sulphuric acid, the ethanol is? ...