ZnO(s) + CO(g) → Zn(s) + CO2(g) In the reaction above, Zinc has been
ZnO(s) + CO(g) → Zn(s) + CO2(g) In the reaction above, Zinc has been A. decomposed B. displaced…
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The oxidation state of chlorine in HClO4 is
The oxidation state of chlorine in HClO4 is A. -5 B. -1 C. +1 D. +7 Correct Answer:…
Calcium tetraoxosulphate (VI) dissolves in water only sparingly to form a
Calcium tetraoxosulphate (VI) dissolves in water only sparingly to form a A. solution B. suspension C. precipitate D.…
Which of the following compound is a normal salt?
Which of the following compound is a normal salt? A. NaHS B. NaHSO4 C. NaHCO3 D. Na2CO3 Correct…
What volume of 0.5 mol dm-3 H2SO4 will exactly neutralize 20cm3 of 0.1 mol dm-3…
What volume of 0.5 mol dm-3 H2SO4 will exactly neutralize 20cm3 of 0.1 mol dm-3 NaOH solution? A.…
Calcium tetraoxosulphate (VI) dissolves in water only sparingly to form a
Calcium tetraoxosulphate (VI) dissolves in water only sparingly to form a A. solution B. suspension C. precipitate D.…
A carcinogenic substance is
A carcinogenic substance is A. asbestos dust B. sawdust C. nitrogen (II) oxide D. carbon (II) oxide Correct…
The solubility in mol dm/-3 of 20g of CuSO4 dissolved in 100g of water at…
The solubility in mol dm/-3 of 20g of CuSO4 dissolved in 100g of water at 180o is [Cu…
Hardness of water is caused by the presence of ions of
Hardness of water is caused by the presence of ions of A. magnesium and silver B. cacium and…
Which of the following mixture of gases is likely to burn in flame
Which of the following mixture of gases is likely to burn in flame A. neon and hydrogen B.…