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.
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is
a metal
an alkaline earth metal
an s-block element
a p-Block element
a transition element
Correct answer is D
No explanation has been provided for this answer.
Consecutive members of an alkane homologous serires differ by
CH
CH2
CH3
CnHn
Correct answer is B
No explanation has been provided for this answer.
The flame used by welders in cutting metals is
butane gas flame
acetylene flame
kerosene flame
oxy-acetylene flame
oxygen flame
Correct answer is D
No explanation has been provided for this answer.
Na 2CO 3
NaHCO 3
NaHSO 4
Na 2SO 4
Correct answer is C
No explanation has been provided for this answer.
The petroleum fraction that is used in heating furnaces in industries is
diesel oil
gasoline
kerosene
lubricating oil
Correct answer is A
No explanation has been provided for this answer.