Lsotopes of uranium are used as nuclear fuel in power plants. true false

True

Explanation:

The following two isotopes of Uranium which are prominently used in a nuclear chain reaction.

a) Uranium-233

b) Uranium-235

Uranium 235 consists of 92 protons and 143 neutrons. When an excited electron hits a Uranium atom, it splits into two smaller atoms and release heat energy under the process of fission.

There is another isotope of Uranium i.e Uranium -238, but it does not break easily and hence is less preferred for a nuclear reaction.

Thus, it can be said that the statement "lsotopes of uranium are used as nuclear fuel in power plants." is true.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: