🧪 JAMB Chemistry

Free JAMB Chemistry past questions

Atomic structure, organic chemistry, stoichiometry for JAMB UTME. 850 questions across 21 years (1978–2020).

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JAMB Chemistry by year

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2004
46 questions
2003
35 questions
2002
38 questions
2001
40 questions
2000
33 questions
1999
48 questions
1998
44 questions
1997
44 questions
1995
34 questions
1994
39 questions
1993
32 questions
1992
51 questions
1991
39 questions
1990
35 questions
1989
40 questions
1988
44 questions
1987
36 questions
1986
47 questions
1985
44 questions
1984
39 questions
1983
42 questions
Sample questions

Recent JAMB Chemistry questions

Latest 10 sample questions. Use the year browser above for the full collection.

Chemistry JAMB 2004 Q1 ✓ Answer: C
In the electrolysis of brine, the anode is
A
Zinc
B
Platinum
C
Carbon
D
Copper.
Chemistry JAMB 2004 Q2 ✓ Answer: A
N2O4(g) 2NO2(g) In the endothermic reaction above, more product formation will be favoured by
A
a decrease in pressure
B
a decrease in volume
C
an increase in pressure
D
a constant volume
Chemistry JAMB 2004 Q3 ✓ Answer: C
The oxidation state of Chlorine in HClO4 is
A
-1
B
–5
C
+7
D
+1
Chemistry JAMB 2004 Q4 ✓ Answer: C
Which of the following hydrogen halides has the highest entropy value?
A
HBr
B
HF
C
Hl
D
HCl
Chemistry JAMB 2004 Q5 ✓ Answer: A
The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s
A
54.0 g
B
27.0 g
C
13.5 g
D
108.0 g [Ag = 108, F = 96500 C mol-1]
Chemistry JAMB 2004 Q6 ✓ Answer: D
Which of the following acts as both a reducing and an oxidizing agent?
A
H2S
B
CO2
C
H2
D
SO2
Chemistry JAMB 2004 Q7 ✓ Answer: B
Which of the following shows little or not net reaction when the volume of the system is decreased?
A
2O3(g) 3O2(g)
B
H2(g) + l2(g) 2Hl(g)
C
2NO2(g N2O4(g)
D
PCl5(g PCl3(g) + Cl2(g 2CO + O2 2CO2
Chemistry JAMB 2004 Q8 ✓ Answer: D
Given that H [CO] is – 110.4 kJmol-1 and H[CO2]is –393o kJmol-1, the energy change for the reaction above is
A
-282.6 kJ
B
+503.7 kJ
C
–503.7 kJ
D
+282.6 kJ ZnO + CO Zn + CO2
Chemistry JAMB 2004 Q9 ✓ Answer: C
In the reaction above, Zinc has been
A
displaced
B
oxidized
C
reduced
D
decomposed.
Chemistry JAMB 2004 Q10 ✓ Answer: B
What volume of gas is evolved at s.t.p. if 2g of Calcium trioxocarbonate(iv) is added to a solution of hydrochloric acid?
A
224 cm3
B
112 cm3
C
2240 cm3
D
448 cm3 [Ca = 40, C=12, O=16, Cl =35.5, H= 1, Molar volume of a gas at s.t.p =22.4 dm3]
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