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Which of the following sets of metals dissolves in dilute HCl?

Which of the following sets of metals dissolves in dilute HCl? A. Fe, Sn and Cu B. Mg,…
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If chlorine is bubbled into water and the resulting yellowish-green solution is exposed to bright…

If chlorine is bubbled into water and the resulting yellowish-green solution is exposed to bright sunlight for a…
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The tincture of iodine means iodine dissolved in

The tincture of iodine means iodine dissolved in A. ethanol B. bromine chloride C. chlorine water D. water…
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Cu2+(aq) + 4NH3(g) ↔ [Cu(NH3)4]2+(aq) In the reaction above, what is the effect of precipitating…

Cu2+(aq) + 4NH3(g) ↔ [Cu(NH3)4]2+(aq) In the reaction above, what is the effect of precipitating Cu2+(aq) as CuS(s)?…
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Copper and silver metals are commonly use as coin because they are

Copper and silver metals are commonly use as coin because they are A. easily reduced B. not easily…
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The reddish-brown rust on iron roofing sheets consists of

The reddish-brown rust on iron roofing sheets consists of A. Fe3+(H2O)6 B. FeO.H2O C. Fe2O3.3H2O D. Fe3O4.2H2O Correct…
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Na2S2O3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) Which of the following would introduce the greatest…

Na2S2O3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) Which of the following would introduce the greatest increase in the…
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A solution which on treatment with hydrochloric acid produces a colourless, odourless gas which turns…

A solution which on treatment with hydrochloric acid produces a colourless, odourless gas which turns lime water milky…
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The soft solder used for welding and plumbing is alloy of

The soft solder used for welding and plumbing is alloy of A. lead and tin B. iron and…
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An element used in the production of matches is

An element used in the production of matches is A. nitrogen B. aluminium C. copper D. sulphur Correct…
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