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 of the following gases is absorbed from the air dun photosynthesis?
Carbon (II) oxide
Carbon (IV) oxide
Nitrogen
Noble gases
Oxygen
Correct answer is B
No explanation has been provided for this answer.
All the following belong to the same family EXCEPT
glycerol
nylon
perspex polyethene
polyethene
polystyrene
Correct answer is A
No explanation has been provided for this answer.
Ptotal = P1 + P2 + P3 +…………. Pn, is an expression of law
Boyle’s
Charles’
Dalton’s
Graham’s
Gay Lussac’s
Correct answer is C
No explanation has been provided for this answer.
The following are ores of metals EXCEPT
bauxite
dolomite
graphite
haematite
magnetite
Correct answer is C
So Dolomite is a magnesium ore, haematite, and magnetite is an iron ore, Bauxite is an aluminum ore while graphite is not a metal ore but a crystalline allotrope form of carbon.
The green house effect is a climatic condition associated with the presence of excess
carbon (II) oxide
carbon (IV) oxide
hydrogen sulphide
nitrogen (II) oxide
oxygen
Correct answer is B
No explanation has been provided for this answer.
Which of the following is a solid at room temperature?
Argon
Bromine
Chlorine
Fluorine
Iodine
Correct answer is E
No explanation has been provided for this answer.
The relationship between equilibrium constant and free energy change is represented as
δ G ° =-nFE °
δG °-RT ln K
δ G °= + RT In k
δG ° = δH – T S
H=TδS
Correct answer is B
No explanation has been provided for this answer.
Which of the following salt solutions will have a pH greater than 7?
NaCl
NaHSO4
Na2CO4
Na2SO4
MgCl2
Correct answer is C
No explanation has been provided for this answer.
Non-polar molecules are held together by
co-ordinate bond
covalent bond
electromagnetic force
hydrogen bond
Van der Waals forces
Correct answer is E
No explanation has been provided for this answer.
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