Class 7 Science MCQs - Chapter 7
Elements and Compounds Trivia Questions & Answers PDF Download - 4
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The Quiz: A process by which new substance is formed, is called; "Elements and Compounds" App APK Download with answers: Chemical formula; Chemical symbol; Chemical property; Chemical reaction; to learn online classes courses. Practice What is Element MCQ Questions, download Kindle eBook (Free Sample) for free online courses.
Elements and Compounds Test Questions and Answers PDF Download: MCQ 4
A process by which new substance is formed, is called
- chemical symbol
- chemical formula
- chemical property
- chemical reaction
A molecule which breaks and gives of hydrogen and oxygen is
- water
- carbon dioxide
- air
- sodium chloride
When magnesium element is burnt with oxygen it makes a compound called
- magnesium peroxide
- magnesium oxide
- magnesium carbonate
- magnesia
Salt, sugar, chalk and sand are all
- elements
- compounds
- mixtures
- solutions
The gas which is used as cooling agent is
- carbon dioxide
- helium
- argon
- nitrogen
Class 7 Science Mock Tests
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