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10th Standard English Medium Science Subject Atoms and Molecules Creative 7 Mark Questions with Solution Part - I Question Bank Software Jul-05 , 2021

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10th Standard English Medium Science Subject Atoms and Molecules Creative 7 Mark Questions with Solution Part - I

10th Standard English Medium Science Subject Atoms and Molecules Creative 7 Mark Questions with Solution Part - I

10th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 35

  1. Write the applications of Avogadro's law.

  2. Calculate the number of molecules in 11g of CO2

  3. Boron naturally occurs as a mixture of boron-10 (5 protons + 5 neutrons) and boron-11 (5 protons + 6 neutrons) isotopes. The percentage abundance of B-10 is 20 and that of B-11 is 80. Then, the atomic mass of boron is calculated as follows :

  4. Relative molecular mass of sulphuric acid (H2SO4) is calculated as follows: Sulphuric acid contains 2 atoms of hydrogen, 1 atom of sulphur and 4 atoms of oxygen.

  5. Relative molecular mass of water (H2O) is calculated as follows: A water molecule is made of 2 atoms of hydrogen and one atom of oxygen.

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