Q. The barium metal is highly reactive if it is stored in

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Q. White solid oxides are produced by burning of group II metals in the presence of

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Q. If water reacts with calcium oxide, it will produce

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Q. The attraction of higher nuclear charge is less than actual charge because of

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Q. In flares production, mostly the fine powder used is of

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Q. Hot magnesium reacts with water to yield

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Q. Decoy magnesium flares give off heat confuses the infrared detection system in missiles so the enemy can not

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Q. When magnesium is burnt on Bunsen burner it gives flame of color

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Q. The calcium oxide reacts with water readily to make a solution which is weakly

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Q. Going down the group the Group-II elements are more

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Q. Strontium (Sr) compounds put on a nichrome (NiCr) wire and heated gives of color

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Q. What is true about metals?

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Q. The percentage of a sample of HBr decomposes at 430 °C. is

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Q. Down the group, the hydrogen halides could be

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Q. Halogens dissolve well in

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Q. Oxidation of hydrogen halides become easier going

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Q. Halogens react with hydrogen gas to form

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Q. The halogens get less reactive

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Q. Poisonous gases are formed with reactions of halogens and sulfuric acid that's why it should be handled

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Q. The halogens reacts with non-metals forming

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