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The electronic configuration of an element is 2,8,2. The hydroxide of this element can produce …………… hydroxyl ions per molecule. (a) 3…
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Which of the following element pairs will form an ionic bond? Pair P Elements of Group 1 & Group 2 Q Elements…
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A non-metal which reacts with concentrated sulphuric acid to form two gases which turn lime water milky is …………… . (a) Sulphur…
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P, Q, R and S are the different methods of preparation of salts. P – Simple displacement Q – Neutralisation by titration…
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You are provided with some compounds in the box. PbO CH4 PbO2 CO2 HCl NCl3 SO2 Choose the most appropriate compound which…
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Differentiate between the following pairs of compounds using the reagent given in the bracket: (a) Ammonium chloride and Sodium chloride (using an…
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(a) State Avogadro’s Law. (b) Define Co-ordinate bond.
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Acidulated water is electrolysed using platinum electrodes. Answer the following questions: (a) Why is dilute sulphuric acid added to water? (b) Write…
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Draw the dot and cross structure of the following: (a) An ionic compound formed when Mg reacts with the dilute HCl. (b)…
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Answer the following questions with reference to the concentration of bauxite ore. (a) Name the process used to concentrate the ore. (b)…
