Science
In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent depletion of “Y”. “X” and “Y” respectively referred here are:
- Ozone; CFCs
- CFCs; rays UV
- CFCs; Ozone
- UV rays; Diatomic oxygen
Related Questions
An object is placed in front of a convex mirror. Its image is formed :
- at a distance equal to the object distance in front of the mirror.
- at twice the distance of the object in front of the mirror.
- half the distance of the object in front of the mirror.
- behind the mirror and it's position varies according to the object distance.
When light enters the atmosphere it strikes on extremely fine particles, which deflect the rays of light in all possible directions, This is due to -
- reflection of light
- atmospheric refraction
- scattering of light
- dispersion of light
Which of the following features relates to biodegradable substances?
- Broken down by biological processes
- Remain inert
- Persist in environment for long time
- May harm the ecosystem
Assertion: Rusting of Iron is endothermic in nature.
Reason: As the reaction is slow, the release of heat is barely evident.
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.