Home
Class 11
CHEMISTRY
Assertion (A) : Ozone is destroyed by so...

Assertion (A) : Ozone is destroyed by solar radiation in upper streatosphere.
Reason (R) : Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth. a)Both A and R are correct and R is the correct explanation of A. b).Both A and R are correct but R is not the correct explanation of A. c)Both A and R are not correct. d)A is not correct but R is correct.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Ozone layer is depleted due to released of chloroflurocarbons (CFCs)
`CF_(2)Cl_(2)(g) overset(UV) to Coverset(.)(l)(g) + F_(2)Cl(g)`
`Coverset(.)l(g) + O_(3) to Cl overset(.)(g) + O_(2)(g)`
`Cloverset(.)(g) + O(g) to Coverset(.)(l) + O_(2)`
Due to depletion of ozone layer, more UV radiation filters into troposphere.
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL CHEMISTRY

    ERRORLESS|Exercise PAST YEARS QUESTIONS|17 Videos

  • CLASSFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    ERRORLESS|Exercise Assertion & Reason |14 Videos

  • GENERAL ORGANIC CHEMISTRY

    ERRORLESS|Exercise ASSERTION AND REASON|14 Videos

Similar Questions

Explore conceptually related problems

Assertion : A^-1 exists, Reason: |A|=0 (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion: Tr(A)=0 Reason: |A|=1 (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) both A and R is false.

Assertion: r=15 Reason : ^nC_x=^InC_yrarrx+y=n (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion: |M|=0 , Reason: Determinant of a skew symmetric matrix is 0. (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion: |A A^T|=0 , Reason : A is a skew symmetric matrix (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion:Points A,B,C are collinear, Reason: vec(AB)xxvec(AC)=0 (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.