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 substances is a non-reducing sugar?
Sucrose
Glucose
Fructose
Maltose
Correct answer is A
No explanation has been provided for this answer.
What is the major product formed when C2H5OH reacts with CH3COOH?
C2H5COOCH3
C2HCOCH3
CH3COOC2H5
C3H7COOH
Correct answer is C
No explanation has been provided for this answer.
Reaction undergone by compounds with the general formula Cn H2n+2 include
addition
esterification
substitution
dehydration
Correct answer is C
No explanation has been provided for this answer.
32
64
128
256
Correct answer is C
No explanation has been provided for this answer.
The main difference between a primary cell and a secondary cell is that the primary cell
is an electrolytic cell but the secondary is not
cannot be recharged but the secondary cell can
can be recharged but the secondary cell cannot
contains electrodes but the secondary cell does not
Correct answer is B
No explanation has been provided for this answer.
Which of the elements will burn in excess oxygen to form a product that is neutral to litmus?
Carbon
Hydrogen
Sulphur
Sodium
Correct answer is B
No explanation has been provided for this answer.
Which of the following reactions is sulphur (IV) oxidizing agent?
2HNO 3(aq) + SO2(g) → H2SO4(aq) + 2NO2(g)
2KMnO 4(aq) + 5SO2(g) + 2H2O → K2SO4(aq) +MnSO4(aq) 2H2SO4(aq)
FeCI3(aq) + SO2(g) + 2H2O(l) → FeCI 2(g)+ 2HCI(g) + H2SO4(aq)
2H2S(g) + SO2(g) →2H2O(l) + 3S(s)
Correct answer is B
It also reduces potassium permanganate and dichromate to Mn2+ and Cr3+ respectively.
Which of the following methods is suitable for preparing insoluble salts?
Thermal decomposition
Oxidation
Double decomposition
Neutralization
Correct answer is C
No explanation has been provided for this answer.
When ice is changing to water, its temperature remains the same because the heart gained is
used to separate the molecules
lost partially to the atmosphere
used to increase the volume of ice
less than the activation energy
Correct answer is A
No explanation has been provided for this answer.
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