Draw the ray diagram for concave mirror when object is placed in front of the mirror on the
principal axis
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Three uses of baking soda
1.Act as the antacid in stomach to neutralise the acidic nature.
2.involve in the formation of dtergents
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principal axis?
9. What information do you get from a balanced chemical equation?
10. Write any three uses of baking soda?
11. How do you find focal length of a lens experimentally? Write the electronic configuration of Na ,
ca, Zn ,Cu Cr
12. An element has atomic number 19 . where would you expect thi element in periodic table and
why?
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