Q. In Na₂CO₃.10H₂O, percentage of oxygen is

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Q. Formula of aluminum sulphate indicates that

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Q. All of these ions have a valency of +2 except

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Q. A water molecule will always contain

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Q. Greatest proportion by mass of nitrogen is in

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Q. Chemical formula of monohydrate monosodium phosphate is

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Q. Chemical formula of aluminum oxide is

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Q. Molar mass of potassium hydrogen carbonate KHCO₃ is

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Q. In Na₂CO₃, relative atomic mass of Carbon is

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Q. Symbol of Gold has been derived from its Latin name

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Q. Valency is numerically equal to

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Q. Chemical formula of calcium nitrate is

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Q. In Na₂CO₃, relative atomic mass of Oxygen is

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Q. If atomic mass of copper is 63.546, mass percent of copper in Cu₂O will be

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Q. NH₄ has

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Q. Expression of ratio of combining number of atoms or ions is called as

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Q. Acids are always

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Q. Molar mass of Calcium Carbonate CaCO₃ is

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Q. In Sulfuric Acid (H₂SO₄), chemical composition of sulfur is

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Q. When Sodium Hydroxide (NaOH) reacts with Copper Sulfate (CuSO₄), spectator ions will be

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