- 1(current)
Q. No.Assertion(A): Cl atoms are not consumed in the reaction where ozone gets degraded to release oxygen under the influence of Cl atoms.
Reason(R): Whatever CFCs are added to the stratosphere, they have permanent and continuing effects on Ozone levels.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Whatever CFCs are added to the stratosphere, they have permanent and continuing effects on Ozone levels.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Ozone Layer Depletion |
 50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion(A): DNA and proteins of living organisms preferentially absorb UV rays.
Reason(R): The high energy of UV rays breaks chemical bonds in DNA and proteins.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The high energy of UV rays breaks chemical bonds in DNA and proteins.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Ozone Layer Depletion |
 51%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2024 GoodEd Technologies Pvt. Ltd.