Question Library

Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.

Launch Interactive Practice
Searching 18,000+ Questions... Sifting topics, KaTeX formulas & verified solutions
Showing 1471–1485 of 4783 verified questions
Sort by:
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
The basicity of CH3COOH is
A
4
B
1
C
2
D
3
medium Difficulty
Chemistry UTME / JAMB 2014 Acids, Bases, and Salts
The mathematical expression of PH is
A
log 10[OH-]
B
log 101/[H 3 O+]
C
log 10[H 3 O+]
D
log 101/[OH -]
medium Difficulty
Chemistry UTME / JAMB 2014 Kinetics, Energetics and Equilibrium
If the change in free energy of a system is -899 Jmol-1 and the entropy change is 10Jmol-1k-1 at 250C, calculate the enthalpy change.
A
+2081 Jmol-1
B
-2081 Jmol-1
C
-649 Jmol-1
D
+649 Jmol-1
medium Difficulty
Chemistry UTME / JAMB 2014 Kinetics, Energetics and Equilibrium
In an equilibrium reaction, which of the following conditions indicates that maximum yield of the product will be obtained?
A
Equilibrium constant is very large
B
∆H - T∆S = O
C
∆ H > T ∆ S
D
Equilibrium constant is less than zero
medium Difficulty
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
In a chemical reaction, the change in concentration of a reactant with time is
A
entropy of reaction
B
enthalpy of reaction
C
rate of reaction
D
order of reaction
medium Difficulty
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
Fluorine does not occur in the free state in nature because
A
it is a poisonous gas
B
it belongs to the halogen family
C
it is inert
D
of its high reactivity
medium Difficulty
Chemistry UTME / JAMB 2014 Electrochemistry and Redox
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
A
sodium is formed at the anode
B
chlorine is formed at the anode
C
sodium does not react with platinum
D
chlorine does not react with platinum
medium Difficulty
Chemistry UTME / JAMB 2014 Electrochemistry and Redox
In the electrolytic extraction of calcium from calcium chloride, the cathode is
A
zinc
B
graphite
C
platinum
D
iron
medium Difficulty
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
A
copper ions
B
sodium ions
C
calcium ions
D
Potassium ions
medium Difficulty
Chemistry UTME / JAMB 2014 Acids, Bases, and Salts
A few drops of NaOH solution was added to an unknown salt forming a white precipitate which is insoluble in excess solution. The cation likely present is
A
Zn2+
B
Pb2+
C
Ca2+
D
Al3+
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry
The general formula of haloalkanes where X represents the halide is
A
Cn H 2n-1X.
B
C nH 2nX.
C
C nH 2n+2 X
D
C nH 2n+1X
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry
The alkanol obtained from the production of soap is
A
propanol
B
ethanol
C
glycerol
D
methanol
medium Difficulty
Chemistry UTME / JAMB 2014 Kinetics, Energetics and Equilibrium
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
A
isoprene
B
polythene
C
ethanol
D
benzene
medium Difficulty
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
Due to the unstable nature of ethyne, it is stored by dissolving in
A
ethane-1,2-diol
B
propanol
C
ethanoic acid
D
propanone
medium Difficulty
Chemistry UTME / JAMB 2014 Matter & Separation Techniques
The process of converting starch to ethanol is
A
cracking
B
distillation
C
fermentation
D
oxidation
medium Difficulty
Page 99 of 319