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.
The oxidation number of sulphur is +4 in
Na2S>2O3
H2SO3
H2SO4
SO3
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is a non-electrolyte?
H2SO4
CH3COOH
C6H12O6
NH4Cl
Correct answer is C
No explanation has been provided for this answer.
Chlorine water is used as a bleaching agent because it is
An acidic solution
An alkaline solution
An oxidizing agent
A reducing agent
Correct answer is C
No explanation has been provided for this answer.
The quality of electricity required to discharge 1 mole of univalent ion is
9600C
48250C
96500C
193000C
Correct answer is C
No explanation has been provided for this answer.
A compound with molecular formula CH2O2 is
A Carbohydrate
A Carboxylic acid
An alkanol
An ester
Correct answer is B
No explanation has been provided for this answer.
1.57 moldm-3
3.14 moldm-3
6.28 moldm-3
12.56 moldm-3
Correct answer is A
Saturated solution = 3503
mass of salt Z in saturated solution = 55.5g
Number of moles of salt = \(\frac{55.5}{101}\) = 0.55mole
3503 of solution contains 0.55mole
1000cm3 will contain \(\frac{1000 \times 0.55}{350}\) = 1.57mol/dm3
I and II only
II, III and IV only
I, II and III only
I, II. III and IV
Correct answer is B
All others except pressure would affect the equilibrium of the system.
Chemical equilibrium is attained when
All the reactants have been completely used up
The reaction goes to completion
The concentration of reactants and products remain constant
The concentration of reactants and products are equal
Correct answer is C
No explanation has been provided for this answer.
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