CHEMISTRY 2022 UTME PAST QUESTION
1. Which of the following substances is used for road surfacing?
A. Bitumen
B. Coal tar
C. Kerosene
D. Diesel
2. CH
2
BrCHClCH
2
CH
2
CH
2
Br
The name of the compound above is
A. 1, dibromo 2chloropentane
B. 1,1dibromo 2 chloropentene
C. 1,1dibromo 4chloropentene
D. 1-bromo-4-chloropentene
3. The process that convert ethanol to ethanoic acid is
A. Halogenation
B. Combustion
C. Oxidation
D. reduction
4. In electroplating steel with chromium the cathode
A. Chromium
B. Steel
C. iron
D. Copper
5. When monoclinic sulphur is cooled below its transitionTemperature what happen
A. It freezes
B. It crumbles
C. It changes to rhombic sulphur
D. It evaporate
6. The bond that exists in oxonium ions are
A. Covalent and dative
B. Covalent and ionic
C. Dative and ionic
D. Metallic and dative
7. The property of butane and propane that makes them suitable for cooking is
A. Diffusion
B. Solubility
C. Boiling point
D. Color
8. The structure of diamond is
A. Cubic
B. Hexagonal
C. Tetrahedral
D. Trigonal
9. Which of the following are secondary air pollutants?
A. Ozone and SO
2
B. Ozone and CO
2
C. Ozone and NO
2
D. NO and SO
2
10. During the preparation of ethane, it is passed through which of the following to remove impurities?
A. NaHCO
3
B. NaOH
C. K
2
CO
3
D. Water
11. The technique commonly used in the purification of solids is
A. Chromatography
B. Decantation
C. Crystallization
D. Centrifugation
12. The presence of impurity in a substance will cause the melting point to
A. Reduce
B. Increase
C. Be stable
D. Be zero
13. Which of these is used in the manufacture of cosmetics?
A. Toluene
B. Phenol
C. Ethene
D. Ethane
14. Which of these metals will liberate hydrogen from steam?
A. Copper
B. Iron
C. Mercury
D. Gold
15. The electronic configuration of Na
+
is
A. 1s
2
2s 2p
6
3s
1
B. 1s
2
2s
2
2p
6
C. 1s
2
2s
2
2p
6
3s
2
D. Done
16. If 50cm3 of hydrogen is sparked with 75cm
3
of oxygen: 2H
2
+ O
2
→ 2H
2
O, the volume of the unreacted oxygen is
A. 50cm
3
B. 25cm
3
C. 30cm
3
D. 100cm
3
17. An example of homogenous mixture is
A. Colloids
B. Sols
C. Emulsion
D. Solution
18. Fine the empirical formula of a compound 69% carbon 15.3% hydrogen and 30.7 % oxygen. [C=12, H=1, O=16].
A. C
3
H
8
O
B. C
3
H
8
O
2
C. C
3
H
8
O
3
D. C
3
H
8
O
4
19. Which of the following techniques would be used in a food industry?
A. Distillation
B. Chromatography
C. Filtration
D. Fractional distillation
20. H+ OH¬- → H2O; this type of reaction is
A. Crystallization
B. Precipitation
C. Neutralization
D. Double decomposition
21. When methane is burnt in excess air, it gives
A. CO
B. CO
2
C. O
2
D. CO
2
& H
2
O
22. Which of the following process will result in a chemical change?
A. Addition of salt of water
B. Evaporation of water
C. Copper (II) oxide mixed with tetraoxosulphate (VI) acid
D. Melting of candle
23. Which of the following methods is used to obtain alkanol from alkene?
A. Dehydration
B. Hydrolysis
C. Hydration
D. Fermentation
24. What is the anode in the extraction of aluminum and what reaction takes place at the anode?
A. Iron, reduction
B. Graphite, oxidation
C. Graphite, reduction
D. Iron, oxidation
25. All these are natural air pollutant except
A. CO
B. NO
C. O
2
D. SO
2
26. Which if the following is not a support for particulate nature of matter?
A. Diffusion
B. Osmosis
C. Dilution
D. Crystallization
27. What element is common t permalloy, steel and Alnico?
A. Carbon
B. Iron
C. Silicon
D. Aluminum
28. The method of preparing a salt depends on it’s
A. Color
B. Density
C. Solubility
D. None
29. The bonds in naphthalene molecules are
A. Ironic
B. Metallic
C. Dative
D. Van der Waals
30. Addition of charcoal in the filter bed for water purification is to
A. Prevent goiter
B. Prevent tooth decay
C. Kill germs
D. Remove odour
31. How many isomers does C
2
H
4
Br
2
have?
A. 2
B. 3
C. 5 C
D. 4
32. What volume of water will be added to 10dm
3
of 2moldm
-3
to obtain 0.5moldm
-3
solution?
A. 30dm
3
B. 40dm
3
C. 10dm
3
D. 20dm
3
33. What bond is present in hydrated copper (II) ions?
A. Electrovalent
B. Dative
C. Covalent
D. Metallic
34. One mole of sucrose C12H22O11 dehydrated will give how many mole of carbon?
A. 11
B. 12
C. 3
D. 6
35. The haloalkane for the preparation of fungicide is?
A. Triiodomethane
B. Tribromomethane
C. Trichlotomethane
D. Trifluoromethene
36. Which of the following is common to all metals?
A. Melting point
B. Hardness
C. Conductivity
D. Ductility
37. X
2(g)
→ 2Y + Z
(g),
▲H = -ve
What condition would favor the production of X?
A. Increases temperature and increase pressure
B. Decreases temperature and decrease pressure
C. Increase temperature and decrease pressure
D. Decrease temperature and increase pressure
38. Which of the following gas will burn with a blue color?
A. SO
2
B. H
2
S
C. HCl
D. NO
2
39. Silicon (IV) oxide after melting at about 1500 oC forms what when cooled?
A. Flint glass
B. Colored glass
C. Quartz glass
D. Heat resistant
40. Which of the following pairs are oxidizing agents?
A. Chlorine and bromine
B. Chlorine and hydrogen
C. Hydrogen and oxygen
D. Iron and sulphur (IV) oxide
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