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NEET UG CHEMISTRY MCQ: POLYMERS

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Understanding +4 | -1

Which of the following practices involves green chemistry?

(i) Substitute

CFCs

by environmental friendly

HFCs

and other compounds

(ii) Replace halogenated solvent by liquid

{CO}_2

for drycleaning

(iii) Use of

{H}_2 {O}_2

for bleaching instead of

{Cl}_2

(iv) Making disposable eating utensils and storage jars of plastics

View answer and explanation

Correct option: D

(i),(ii) and (iii)

Option D ((i),(ii) and (iii)) is correct because all three practices reduce environmental harm by using safer alternatives.

More Questions from POLYMERS

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Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation

\mathrm{I}\mathrm{.}\,\,\,\,\,\mathrm{N}{\mathrm{O}_2}{\mathrm{C}_6}{\mathrm{H}_5} - \mathrm{CH} = \mathrm{C}{\mathrm{H}_2}

\mathrm{II}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_3}

\mathrm{III}\mathrm{.}\,\,\,\,\,\mathrm{C}{\mathrm{H}_2} = \mathrm{CH} - {\mathrm{C}_6}{\mathrm{H}_5}\mathrm{OC}{\mathrm{H}_3}

Thiokol is a Assertion: Vulcanisation of rubber increases its tensile strength.

Reason: Sulphur cross links are formed between poly-isoprene chains during vulcanisation. Select the correct statement. Which of the following type of forces are present in vulcanized rubber? Which of the following is not an example of addition polymer?