TEST paper - 4(Chemistry) - IX

22) sodium chloride in parts a colour on application of the flame test or identification of the Metallica radical in a salt calcium chloride colour and potassium chloride a colour golden yellow hydrogen sulphide nitrogen dioxide turns lead acetate paper silvery black heat on zinc nitrate lead nitrate copper nitrate gives a black residue a coloured acidic basic neutral gas and colourless two solution is how much heterogeneous in nature average of the atomic weight of its natural molecules ions isotopes all temperature on Kelvin scale are in figures and negative positive - 273 is equals to 273 0 every substance is a stored amount of energy unit potential or latent commonly called mechanical chemical photo chemical chlorine needs to 13 at 10 stable electronic configuration of the nearest noble gas number of electron gain The lost for atom of the metals does not tell about the concentration of both react and products the formula of aluminium sulphide is nitrogen dissociation is reversible reaction in the reaction activityozone layer prepared harmful from reaching the Earth surface will be raise Gamma rays electromagnetic radiation element of 6 electrons in its outermost LC its valency is +2 - 2 + 1 - 1 elements of atoms in which all sales and complete cell which is incomplete bridge normal in a transition in the Bose process for the manufacture of hydrogen the gas carbon dioxide recovered by dissolving it in caustic potash chloride carbon disulphide in the manufacture of hydrogen reaction