Q. In paper chromatography, the paper strip must be in position

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Q. For alkali burns, wash with plenty of water and then with

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Q. Sodium metal is stored in

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Q. If poison is swallowed, then give one teaspoon of oil is taken

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Q. In boiling point apparatus, the lower end of the thermometer bulb and the capillary tube must be

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Q. In case of very small burns, the burnt place should be dipped in

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Q. The lightest metal of group I-A is

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Q. The chemical formula of Gypsum is

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Q. The block in periodic table that contain noble metals

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Q. The heaviest metal in the periodic table is

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Q. Group-IIA elements are called

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Q. Sodium reacts rapidly with water giving NaOH and gas

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Q. The element is used for igniting aluminium powder in the thermite process

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Q. The metal and its salt which imparts crimson red color to the flame is

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Q. Sodium reacts with alcohol to form

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Q. The metal which cannot be easily oxidized is

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Q. The color of calcium ion is

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Q. Example of the mild oxidizing agent is

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Q. All group II-A elements react with hydrogen forming hydrides except

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Q. Complete the following reaction V₂O₅ + →

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