Assertion: The primitive atmosphere was a red | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The primitive atmosphere was composed of light atoms like hydrogen,which were highly reactive. These hydrogen atoms combined with all available ox

Vedclass · Accepted Answer

If the Assertion is correct but Reason is incorrect.

Vedclass · Answer

(C) The primitive atmosphere was composed of light atoms like hydrogen,which were highly reactive. These hydrogen atoms combined with all available oxygen atoms to form water $(H_2O)$,leaving no free oxygen in the atmosphere. Therefore,the primitive atmosphere was reducing in nature.The formation of the ozone layer $(O_3)$ is a result of the modern oxidizing atmosphere,which contains abundant free oxygen produced by photosynthetic organisms. In the primitive atmosphere,there was no free oxygen available to form ozone. Thus,the Reason is incorrect.

Assertion: The primitive atmosphere was a reducing one,i.e.,without oxygen.
Reason: In the primitive atmosphere,oxygen was involved in forming ozone.

Similar Questions

The first organisms to evolve on the earth were

Which of the following theories attempts to explain the origin of the universe?

Select the statement which is '$NOT$' true about the Big Bang Theory.

Which of the following was $NOT$ present in a free form during the origin of life?

Miller and Urey performed an experiment to prove the origin of life. They took gases $NH_{3}$ and $H_{2}$ along with:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion: The primitive atmosphere was a reducing one,i.e.,without oxygen.Reason: In the primitive atmosphere,oxygen was involved in forming ozone.