The relative density of a substance is the ____.
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What is the position of metallic ion and non-metallic ion in a chemical formula?
What is formed when helium atom loses one electron?
An electron loses potential energy when it
The Sum of three consecutive numbers is 126.Find the highest number.
What is two days after the day after the day before yesterday?
Tomorrow
The day before yesterday was two days ago; the day after the day before yesterday was yesterday; two days after that (yesterday) is tomorrow.
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An object is placed at the centre of curvature of a concave mirror. Its image is formed at
Organs having different structure and components but perform similar functions are called ______.