MEDIUM
7th CBSE
IMPORTANT
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Which metal is present in the human body in greater percentage?

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Important Questions on National Science Olympiad 2

MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 25 - National Science Olympiad 2>COMPREHENSIVE ASSESSMENT 2(10-18)>Q 2
X is present in the stomach. However, its presence in excess causes indigestion, which requires the intake of milk of magnesia to undo its effect. What is X?
MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 25 - National Science Olympiad 2>COMPREHENSIVE ASSESSMENT 2(10-18)>Q 7
Which one of the following is true for all chemical reactions?
MEDIUM
7th CBSE
IMPORTANT
Science Now 7>Chapter 25 - National Science Olympiad 2>COMPREHENSIVE ASSESSMENT 2(10-18)>Q 9
Study the given set-up of an experiment. You will observe that
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