The atomic number of iron is 56. The number of unpaired electrons in the Fe3+…
The atomic number of iron is 56. The number of unpaired electrons in the Fe3+ ion is A.…
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Which statement BEST describes the process of oxidation?
Which statement BEST describes the process of oxidation? A. addition of hydrogen B. loss of oxygen C. decrease…
The decreasing order of the oxidising power of the halogens is
The decreasing order of the oxidising power of the halogens is A. Br>I>Cl>F B. F>I>Cl>Br C. F>Cl>Br>l D.…
20 cm3 of 0.09 mol dm3 solution of tetraoxosuiphate (Vi) acid requires 30cm3 of sodium…
20 cm3 of 0.09 mol dm3 solution of tetraoxosuiphate (Vi) acid requires 30cm3 of sodium hydroxide solution for…
When steam is passed over red hot carbon the substances produced are
When steam is passed over red hot carbon the substances produced are A. hydrogen and trioxocarbonate (IV) acid…
Calculate the relative molecular mass of Limestone CaCO3, (Ca = 40, C =12, O =…
Calculate the relative molecular mass of Limestone CaCO3, (Ca = 40, C =12, O = 16) A. 56…
In the electrolysis of brine the anode is
In the electrolysis of brine the anode is A. platinum B. copper C. zinc D. carbon Correct Answer:…
The oxidation state of sulphur on H2SO4 acid is
The oxidation state of sulphur on H2SO4 acid is A. -4 B. +6 C. 4 D. -8 Correct Answer: Option…
S block elements of the periodic table one made up of
S block elements of the periodic table one made up of A. groups 1, 2, 3 B. groups…
In the electrolysis of CuSo4(g) using platinum electrode the reaction at the anode is
In the electrolysis of CuSo4(g) using platinum electrode the reaction at the anode is A. 4H+ 4e –…