Class 7 Science MCQs - Chapter 8
Elements and Compounds Trivia Questions and Answers PDF - 4
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Elements and Compounds Questions & Answers PDF Download: MCQ Quiz 4
MCQ 16: A process by which new substance is formed, is called
- chemical symbol
- chemical formula
- chemical property
- chemical reaction
MCQ 17: A molecule which breaks and gives of hydrogen and oxygen is
- water
- carbon dioxide
- air
- sodium chloride
MCQ 18: When magnesium element is burnt with oxygen it makes a compound called
- magnesium peroxide
- magnesium oxide
- magnesium carbonate
- magnesia
MCQ 19: Salt, sugar, chalk and sand are all
- elements
- compounds
- mixtures
- solutions
MCQ 20: The gas which is used as cooling agent is
- carbon dioxide
- helium
- argon
- nitrogen
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Elements and Compounds MCQ Book Questions
- When the ovule and the nucleus of the pollen grain are joined
- For current to flow, the circuit should be
- In most species of plants, food is stored in
- Ionic bonds are
- A substance which consists of two or more elements which have been combined chemically is called
- If a large star with a mass more than that of sun