Record Performance
2091 MCQ for effective preparation of the test of Sciences of General Knowledge section.
Read the MCQ statement: Air is the mixture of gases in our atmosphere. It consists of mainly Nitrogen (78%) and Oxygen. What is the percentage of Oxygen in the air?
A) B)
C) D)
, keenly and apply the method you have learn through the video lessons for Sciences to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 526-5785.