Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
108.0g
54.0g
27.0g
13.5gq
Correct answer is B
Ag + ie → Ag+
If w 96500 C deposit 108g of silver
∴ 10 * 4830 will deposit (10 * 4830 * 108)/96500
= 5216400/96500 = 54.06g
In the electrolysis of brine, the anode is
platinum
copper
zinc
carbon
Correct answer is D
No explanation has been provided for this answer.
Which of the following acts as both reducing and oxidized agent?
H2
SO2
H2S
CO2
Correct answer is B
No explanation has been provided for this answer.
ZnO(s) + CO(g) → Zn(s) + CO2(g)
In the reaction above, Zinc has been
decomposed
displaced
oxidized
reduced
Correct answer is D
No explanation has been provided for this answer.
The oxidation state of chlorine in HClO4 is
-5
-1
+1
+7
Correct answer is D
No explanation has been provided for this answer.