Q. Valency of magnesium is

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Q. Valency of Plumbum can be

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Q. Combining Copper(II) (Cu+2) with Oxygen (O₂) results in

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Q. Molar mass of (NH₄)₂SO₄ is

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Q. Chemical formula of rouge pigment is

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Q. In order to form Copper(II) Hydroxide, number of Hydroxyl ions to gain stability with one Copper ion will be

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Q. When Carbon ions (C±4) react with Carbon Dioxide gas (CO₂), product will be

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Q. Formula Ca(OH)₂ is of

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Q. In H₂SO₄, chemical composition of oxygen is

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Q. In Na₂CO₃.10H₂O, highest percentage composition is of

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Q. Chemical composition of a compound

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Q. All are covalent compounds except

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Q. MgCO₃ + HCl reacts to form carbonic acid, which decomposes into

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Q. In Na₂CO₃, relative atomic mass of sodium is

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Q. Relative molecular mass of Sulfuric Acid (H₂SO₄) is

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Q. Chemical formula of Ammonium Sulfate is

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Q. In Copper Oxide (Cu₂O), charge on Copper (Cu) is

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Q. Hydrogen Chloride (HCl) is a

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Q. Empirical formula can be obtained if following is known:

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Q. Valency of all these ions is -2, except

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