Q. Relative molecular masses can be calculated

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Q. Phosphorus can have a valency of

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Q. In magnesium oxide, magnesium ion requires only one oxygen ion because

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Q. In writing chemical equations, inclusion of state symbols shall be done while

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Q. Plumbum is Latin name of

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Q. Valency of all these ions is negative 1, except

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

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Q. Charge on Sulphur can be

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Q. In Calcium Chloride, percentage composition of Calcium is

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Q. Compounds are not formed by elements

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Q. Percentage of an element can be calculated through

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Q. Covalent compounds

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Q. If Magnesium Carbonate (MgCO₃) reacts with Hydrochloric Acid (HCl), products will involve

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

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Q. A salt(s) and H₂(g) is produced if reactants are

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Q. Formula of Copper Hydroxide is

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Q. Na₂SO₄ stands for

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Q. Copper ion can be written as

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Q. Chemical formula of Copper(I) Oxide

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Q. If waters relative molecular mass is 36, molecular formula will turn out to be

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