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.
Which formula is used to indicate the degree of acidity of an acid?
\( [H^+] = ^{\text{mass of acid relative}} molecular mass of acid \)
F = number of H+ = ions x molar mass of the acid
Kw = [H+][OH-]
pH = - log10[H+]
pKa = -log10Ka
Correct answer is D
No explanation has been provided for this answer.
CH3CH2CHO
CH3CH2CH2OH
CH3CH2COQH
CH3CH20CH
CH3CH3OH
Correct answer is B
No explanation has been provided for this answer.
A calcium atom and a calcium ion have the same
chemical properties
electric charge
electronic structure
number of electrons
number of neutrons
Correct answer is E
No explanation has been provided for this answer.
Which is NOT a synthetic polymer?
nylon
Orion
Perspex
polystyrene
wool
Correct answer is E
No explanation has been provided for this answer.
The reaction C2H6 → C2H + H2 is known as
dehydration
dehydrogenation
displacement
hydrogenation
reduction
Correct answer is B
No explanation has been provided for this answer.