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प्रश्न
From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(a) Does not react with dilute hydrochloric acid
(b) Can form 2+ and 3+ ions
(c) Has a hydroxide that reacts with both acid and alkalis.
(d) Does not react with cold water, but reacts with steam when heated.
एक शब्द/वाक्यांश उत्तर
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उत्तर
(a) Copper
(b) Iron
(c) Zinc
(d) Magnesium
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