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.
Nuclear fission involves the splitting of a heavy element into two nuclei of
nearly equal masses with a relaese of energy and radiaton
equal masses with a relaese of energy
equal masses with a release of energy and radiation
unequal masses without any relaese of energy
Correct answer is A
No explanation has been provided for this answer.
The volume of 2.5 moles of oxygen at s.t.p is
[Molar volume of a gas at s.t.p = 22.4 dm3]
50.0 dm3
84.0 dm3
28.0 dm3
28.0 dm3
Correct answer is D
1 mole of gas at s.t.p = 22.4
2.5 moles → 2.5 * 22.4 = 56.00 dm3
A difference between chemical and physical change is that in a chemical change
oxygen is consumed
heat is supplied
a reversible process oocurs
a new substance is formed
Correct answer is D
No explanation has been provided for this answer.
A particle that contains 11 protons, 12 neutrons and 10 electrons is probably a
neutral non-metal
metallic ion
non-metallic ion
neutral metal
Correct answer is B
No explanation has been provided for this answer.
supersaturated
concentrated
unsaturated
saturated
Correct answer is D
No explanation has been provided for this answer.