MCQ
Dacron is obtained by the condensation polymerisation of:
- ✓Dimethyl terephthalate and ethylene glycol.
- BTerephthalic acid and formaldehyde.
- CPhenol and phthalic acid.
- DPhenol and formaldehyde.
✓
Answer
Correct option: A.
Dimethyl terephthalate and ethylene glycol.
Dacron is obtained by the condensation polymerisation of dimethyl terephthalate and ethylene glycol.
Dacron is polyester and is also called terylene.
Dacron is polyester and is also called terylene.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
When primary amines are treated with $HCl$, the product obtained is
→Which of the following does not give bicarbonate test with $NaHCO_3$
→Ethylene is produced by,
→$\mathop {{C_4}{H_8}}\limits_{{\text{Cyclobutane}}} \xrightarrow{{Heat}}2{C_2}{H_4}$ The rate constant is $2.3 \times 10^{-4}\ sec^{-1}.$ In what time will the molar ratio of the ethylene to cyclobutane in reaction mixture attain the value $1$ ? ...... $\min$
A reaction rate constant is given by $k = 1.2 \times 10^{14} \,e^{-25000/RT} \,sec^{-1}$.It means
→Which nitrogen trihalides is least basic
Methanol and ethanol are distinguished by the
A reaction $2A \to $ products is found to follow zero oder kinetics, then
→$[CoCl_2(NH_3)_4]^+ Cl^- \to [CoCl_3(NH_3)_3]+ NH_3$ . If in this reaction two isomers of the product are obtained, which is true for the initial (reactant) complex
→Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+ R$ effect of phenyl group decreases the electron density on the carbon atom of $> C = O$ group in benzaldehyde
→Reason : The overall effect of $-I$ and $+ R$ effect of phenyl group decreases the electron density on the carbon atom of $> C = O$ group in benzaldehyde
What is $'A'$ in the following reaction
→