Chapter 1: Class 6 Science Exam Tests
Class 6 Science MCQs - Chapter 1
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The Quiz: An odorless, invisible gas that makes about 20%-22% of the earth's atmosphere is known as; "Air and Atmosphere" App Download iOS & Android (Free) with answers nitrogen, oxygen, argon and carbon to learn e-learning courses. Study atmosphere basic facts quiz questions, download Amazon eBook (Free Sample) for online education programs.
MCQ 51: An odorless, invisible gas that makes about 20%-22% of the earth's atmosphere is known as
MCQ 52: A thin layer that is held in place by gravity and provides us with oxygen is known as
MCQ 53: The percentage composition of nitrogen in air is
MCQ 54: The second step of fractional distillation is heating the mixture so that components evaporate at their
MCQ 55: In respiration, living organisms take in oxygen and give out
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