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Science Assertion & Reason

T3 CH3 Polymer Chemistry · Tamil Nadu Board STD 7 (Tamil - English Medium). 3 questions.

Questions

Assertion & Reason

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3 questions · timed · auto-graded

MCQ 11 Mark
Assertion and Reason
A: It is good to avoid plastics.
R: Plastics end up polluting the environment.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is the correct explanation of A.
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MCQ 21 Mark
Assertion and Reason
A: It takes a very long time for nylon clothes to breakdown into microfibers but cotton clothes need only six months to decompose.
R: Nylon made out of petrochemicals is non-biodegradable and cotton cloth is biodegradable.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is the correct explanation of A
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MCQ 31 Mark
Assertion and Reason
A: Vegetable peels buried in the soil disappear within two weeks.
R: Vegetable peels are compostable.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is the correct explanation of A.
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