Class 7 science Practice Tests
Class 7 Science Online Tests
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The MCQ: The gas which is used as cooling agent is; "Uses of Elements" App Download (Free) with answers: Carbon dioxide; Helium; Argon; Nitrogen; to study distance learning courses. Solve Elements and Compounds Quiz Questions, download Apple eBook (Free Sample) for online elementary school classes.
Due to temperature sensitivity the element which is filled in thermometer, is
The gas which is used as cooling agent is
A very light and inert gas is
Air ships and balloons use gas called
A ductile element which is a good conductor of electricity is called
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