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.
The molecules of which gas have the highest speed?
H2 at -73oC
CH4 at 300 K
N2 at 1,027oC
O2 at 0oC
Correct answer is A
No explanation has been provided for this answer.
The metallurgical process in which a metal is obtained in a fused state is called
smelting
roasting
calcinations
froth floatation
Correct answer is A
No explanation has been provided for this answer.
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
p-electrons in Ne(Z = 10)
s-electrons in Mg(Z = 12)
d-electrons in Fe(Z = 26)
p-electrons in CI(Z = 17)
Correct answer is D
No explanation has been provided for this answer.
The metal used to recover copper from a solution of copper sulphate is
Na
Ag
Hg
Fe
Correct answer is D
No explanation has been provided for this answer.
The most electronegative element among the following is
sodium
bromine
fluorine
oxygen
Correct answer is C
No explanation has been provided for this answer.