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Answers
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Therefore, 5 rational numbers between 1/2 and 1/3 are 13/36, 14/36, 15/36, 16/36 & 17/36.
add 1 to the numbers of rational u want.
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1) Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. ... Hence, hydrogen gas is most likely to be produced during these reactions.
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2)During extraction of metals, electrolytic refining is used to obtain pure metals. (ii) Aqueous solution of a silver salt like AgNO3 can be used as an electrolyte. (iii) We get pure silver at cathode, because at cathode, reduction reaction will takes place.
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3)This is because it is easier to obtain metals from their oxides (by reduction) than from carbonate or sulphide ores.
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4)When metals are treated with mineral acids, hydrogen gas is liberated but when metals treated with HNO3, hydrogen is not liberated because HNO3 is strong oxidising agent so it oxidises hydrogen to water.