🧪 2002

JAMB Chemistry 2002 past questions

38 questions from the 2002 JAMB UTME Chemistry paper. Free, with answers where available.

Practice with CBT mock → All Chemistry years
Chemistry JAMB 2002 Q3 ✓ Answer: D
What is the percentage by mass of oxygen in Al2(SO4)3.2H2O?
A
14.29%
B
25.39%
C
50.79%
D
59.25% [A = 27, S=32, H=1, O=16] The filter in a cigarette reduces the nicotine content by
Chemistry JAMB 2002 Q6 ✓ Answer: B
The gas that gives brown colouration in brown ring test is
A
CO
B
NO
C
CO2
D
NO2
Chemistry JAMB 2002 Q7 ✓ Answer: C
Which of the following gives a precipitate when treated with NaOH solution?
A
NH4Cl
B
Na2CO3
C
AlCl3
E
CH3COONa
Chemistry JAMB 2002 Q8 ✓ Answer: B
The reaction of an alkene with hydrogen in the presence of a catalyst is
A
a nucleophilic reaction
B
an addition reaction
C
a substitution reaction
D
an oxidative reaction
Chemistry JAMB 2002 Q10 ✓ Answer: C
The intermediate product formed when ethanol is progressively oxidized to ethanoic acid with potassium heptaoxodichromate (V1) is
A
methanal
B
propanal
C
ethanal
D
butanal
Chemistry JAMB 2002 Q11 ✓ Answer: B
CH3 CH3 CH2--C-H OH The compound above is a
A
primary alkanols
B
secondary alkanols
C
tertiary alkanols
D
glycol 12, A red precipitate of copper (1) carbide is formed when ammonium solution copper (1) chloride is introduced into.
Chemistry JAMB 2002 Q13 ✓ Answer: D
The most important use of hydrogen is in the
A
manufacture of methyl alcohol
B
manufacture of ethyl alcohol
C
hydrogenation of oils
D
manufacture of ammonia
Chemistry JAMB 2002 Q14 ✓ Answer: A
Which of the following polymers is suitable for packaging and electrical insulation?
A
Polyethene
B
Polystyrene
C
Polyamide
D
Polycarbonate.
Chemistry JAMB 2002 Q15 ✓ Answer: C
The boiling of fat and aqueous caustic soda is referred to as.
A
acidification
B
hydrolysis
C
saponification
D
esterification.
Chemistry JAMB 2002 Q16 ✓ Answer: D
Ordinary glass is manufactured from silica, CaCO3 and
A
NaHCO3
B
K2SO4
C
K2CO3
D
Na2CO3
Chemistry JAMB 2002 Q19 ✓ Answer: C
Which of these pairs are synthetic and natural macromolecules respectively?
A
Nylon and polyethylene, creatine and haemoglobin
B
Nylon and creative, polyethylene and haemoglobin
C
Polyethylene and creatine, nylon and haemoglobin
D
Haemoglobin and nylon, creatine and polyethylene
Chemistry JAMB 2002 Q20 ✓ Answer: C
An example of an element that can catenate is
A
nitrogen
B
chlorine
C
carbon
D
bromine
Chemistry JAMB 2002 Q21 ✓ Answer: D
Ethanol can easily be produced by
A
distillation of starch solution
B
catalyst oxidation of methane
C
destructive distillation of wood
D
fermentation of starch. [PAGE 64]
Chemistry JAMB 2002 Q22 ✓ Answer: D
Hydrogen is readily released when dilute hydrochloric acid reacts with
A
Ag
B
Au
C
Cu
D
Na
Chemistry JAMB 2002 Q23 ✓ Answer: C
Which of the following statement is true of a proton?
A
The mass of a proton is 1.0008 g
B
The mass of a proton is
C
The mass of proton is 1840 times the mass of an electron
D
The total mass of the proton in a particular nucleus is always half the nucleus is always half the nuclear mass.
Chemistry JAMB 2002 Q24 ✓ Answer: A
14 6 C X + B X in the equation above represents.
A
14 7 N
B
13 6C
C
12 6C
D
12 5B
Chemistry JAMB 2002 Q26 ✓ Answer: D
Which of the following chlorides would exhibit the least ionic character?
A
LiCl
B
MgCl2
C
CaCl2
D
AlCl3
Chemistry JAMB 2002 Q28 ✓ Answer: B
The processes which return carbon(1V) oxide to the atmosphere include
A
Photosynthesis, respiration and transpiration
B
Respiration, decay and combustion
C
Photosynthesis, decay and respiration
D
Ozone depletion, combustion and decay.
Chemistry JAMB 2002 Q29 ✓ Answer: B
The postulate of Dalton’s atomic theory which still hold is that
A
all element are made of small indivisible particles
B
particles of different elements combine in a simple whole number ration
C
atoms can neither be created nor destroy ed
D
the particles of the same element are exactly alike
Chemistry JAMB 2002 Q30 ✓ Answer: B
If 0.75 mole of cyclopropane and 0.66 mole of oxygen are mixed in a vessel with a total pressure of 0.7 atmosphere, what is the partial pressure of oxygen in the mixture?
A
0.22 atmosphere
B
0.33 atmosphere
C
0.44 atmosphere
D
0.55 atmosphere
Chemistry JAMB 2002 Q31 ✓ Answer: C
When H2S is passed into a solution of iron (iii) chloride, the solution turns
A
brown
B
pale green
C
colourless
D
pale red.
Chemistry JAMB 2002 Q32 ✓ Answer: C
Which of the following equations shows that a reaction is in equilibrium?
A
G = H – T S
B
G < O
C
G = O
D
G > O
Chemistry JAMB 2002 Q33 ✓ Answer: C
Cu2S(s) + O2(g) 2Cu(s) + SO2(g) What is the change in the oxidation number of copper in the reaction above?
A
0 to +2
B
0 to +1
C
+1 to 0
D
+2 to +1
Chemistry JAMB 2002 Q36 ✓ Answer: B
The products of the electrolysis of dilute sodium hydroxide using platinum electrodes are
A
sodium metal and oxygen gas
B
hydrogen and oxygen gases
C
water and hydrogen gas
D
water and sodium metal
Chemistry JAMB 2002 Q37 ✓ Answer: A
PCl5(g) PCl3(g) + Cl2(g) In the reaction above, a decrease in pressure will
A
increase the yield of PCl3
B
increase the yields of PCl5
C
accelerate the reaction
D
decelerate the reaction [PAGE 65]
Chemistry JAMB 2002 Q38 ✓ Answer: B
The Arrhenius equation expresses the relationship between the speed of a reaction and its
A
catalyst
B
activation energy
C
molecular collisions
D
heat of reaction
Chemistry JAMB 2002 Q39 ✓ Answer: A
What amount of mercury would be liberated if the same quantity of electricity that liberated 0.65 g of zinc is supplied?
A
8.04 g
B
4.02 g
C
2.01 g
D
1.00 g [Zn = 65, Hg = 201]
Chemistry JAMB 2002 Q40 ✓ Answer: C
When dissolved in water, NaOH flakes show
A
a rapid reaction
B
a slow reaction
C
an exothermic change
D
an endothermic change
Chemistry JAMB 2002 Q41 ✓ Answer: C
Steam changes the colour of anhydrous cobalt (11) chloride from
A
blue to white
B
white to green
C
blue to pink
D
white to red
Chemistry JAMB 2002 Q42 ✓ Answer: D
Which of the following solutions containing only hydroxyl ions will liberate hydrogen gas when reacted with magnesium metal?
A
1.0 x 10-12 mol dm-3
B
1.0 x 10-6 mol dm-3
C
1.0 x 10-4 mol dm-3
D
1.0 x 10-2 mol dm-3
Chemistry JAMB 2002 Q43 ✓ Answer: B
The solubility of a salt of molar mass101 g at 20oC is 0.34mol dm-3. If 3.40 g of the salt is dissolved completely in 250 cm3 of water in beaker, the resulting solution is
A
saturated
B
unsaturated
C
supersaturated
D
a suspension.
Chemistry JAMB 2002 Q44 ✓ Answer: C
25 cm3 of a 0.2mol dm-3 solution of Na2CO3 requires 20cm3 of a solution of HCl for neutralization. The concentration of the HCl solution is
A
0.2 mol dm-3
B
0.4 mol dm-3
C
0.5 mol dm-3
D
0.6 mol dm-3
Chemistry JAMB 2002 Q45 ✓ Answer: B
When a salt loses its water of crystallization to the atmosphere exposure, the process is said to be
A
effervescence
B
efflorescence
C
fluorescence
D
deliquescence
Chemistry JAMB 2002 Q46 ✓ Answer: B
Three drops of 1.0 mol dm-3 solution of NaOH are added to 20 cm-3 of a solution of pH 8.4. The pH of the resulting solution will be
A
less than 8.4
B
greater than 8.4
C
unaltered
D
close to that of pure water.
Chemistry JAMB 2002 Q47 ✓ Answer: A
Tetraoxosulphate (Vl) acid burns the sk9in by
A
dehydration
B
hydrolysis
C
hydration
D
heating
Chemistry JAMB 2002 Q48 ✓ Answer: D
The substance least considered as a source of environmental pollution is
A
uranium
B
lead compounds
C
organphosphourous compounds
D
silicate minerals.
Chemistry JAMB 2002 Q49 ✓ Answer: D
The property which makes alcohol soluble in water is the
A
ionic character
B
boiling point
C
covalent nature
D
hydrogen bonding
Chemistry JAMB 2002 Q50 ✓ Answer: A
The furring of kettles is caused by the presence in water of
A
calcium hydrogentrioxocarbonate (1V)
B
calcium trioxocarbonate(1V)
C
calcium tetraoxosulphate (V1)
D
calcium hydroxide