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 radioactive emission with the least ionization power is
α−particles
X-rays
γ−rays
β−rays
Correct answer is C
No explanation has been provided for this answer.
How many unpaired electron are in the p-orbitals of a fluorine atom?
3
0
1
2
Correct answer is C
No explanation has been provided for this answer.
The following equations represent redox reactions EXCEPT
Ba2+(aq) + SO2-4 (aq) → BaSO4(s)
Cl2(g) + 2Br- (aq) → 2CI - (aq) + Br2(g)
Fe2+(aq) + ½ C I2(aq) → Fe3+ (aq) + CI-(aq)
2Fe3+(aq) + Sn2+(aq) → 2Fe2+(aq) Sn4+ (aq)
Zn(s) + CU2+(aq) → Zn2+(aq) + CU(s)
Correct answer is A
No explanation has been provided for this answer.
0.28
0.56
2.24
5.6
11.2
Correct answer is B
No explanation has been provided for this answer.
Brain tumors can be located by using an isotope of
carbon - 14
iodine 131
technetium 99
uranium235
uranium 238
Correct answer is C
No explanation has been provided for this answer.