Q. As we move down the group, affinity of halogens for hydrogen

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Q. MgCO₃.CaCO₃ is the chemical formula of

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Q. The chemical formula of bleaching powder is

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Q. The metal reacting readily with cold water is

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Q. The metal ion with crimson color is

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Q. The physical parameters from Li to Cs

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Q. The reactivity of a non-metal is measured in terms of its tendency to

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Q. The metal used for the manufacturing of fibre-glass is

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Q. The name halogen is derived from Greek word which means

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Q. KCl.MgCl₂.6H₂O is the chemical formula of

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Q. Calcium burns in air giving a mixture of

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Q. The melting point of tungsten is

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Q. Soft metals are present in group

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Q. 0.53 g/cm³ is a density of

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Q. The reactivity of halogens down the group

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Q. Cu, Au and Ag are commonly known as

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Q. Chlorine reacts with methane in the sunlight to produce

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Q. Formation of Grignard's reagent involves following equation C₂H₅I + Mg →

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Q. The ionization energy of group I and II decreases and their reactivities

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Q. Magnesium has great affinity for

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