UTME 2023 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
\( I. \) Production of one element and compound \( II. \) Electroplating of one metal by another \( III. \) Purification of some metals Which of the following combinations entirely consists of applications of electrolysis?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Question 2
Which of the following pollutants is biodegradable?
A. Sewage
B. Plastics
C. Metal scraps
D. Lead compounds
Question 3
A salt which loses mass when exposed to air is
A. hygroscopic.
B. deliquescent
C. efflorescent
D. fluorescent
Question 4
Which of the following separation techniques is extensively employed in the garri processing industry?
A. Filtration
B. Crystallisation
C. Sieving
D. Distillation
Question 5
Two elements X and Y have electronic configurations \(1S^{2} \text{ } 2S^{2} \text{ } 2P^{6} \text{ } 2P^{6} \text{ } 3S^{2} \) and \( 1S^{2} \text{ } 2S^{2} 2 P^{4}\) respectively. The chemical formula of the compound formed by X and Y is _____
A. \( X_{2}Y_{3} \)
B. \( XY_{2} \)
C. \( X_{2}Y_{3} \)
D. \( XY \)
Question 6
Alkanol + Alkanoic acid \( \xrightarrow{\mathrm{H}_{2} \mathrm{SO}_{4}} \) Alkylalkanoate + water. The equation above represents .......
A. neutralisation
B. dehydration
C. saponification
D. esterification
Question 7
When an element can exist in two or more forms in the same physical state, the element is said to exhibit
A. isotopy
B. isomerism
C. allotropy
D. hygroscopy
Question 8
The electronic configuration of fluoride ion, \( F^{-} \) is _____
A. \( 1 S^{2} 2 S^{2} 2 P^{5} \)
B. \( 1 S^{2} 2 S^{2} 2 P^{6} \)
C. \( 1 S^{2} 2 S^{2} 2 P^{6} 3 S^{2} 3 P^{5} \)
D. \( 1 S^{2} 2 S^{2} 2 P^{6} 3 S^{2} 3 P^{6} \)
Question 9
Which of the following gases is used as a preservative in carbonated drinks?
A. Chlorine
B. Carbon (II) oxide
C. Carbon (IV) oxide
D. Oxygen
Question 10
Moist chlorine gas bleaches by ......
A. hydration
B. reduction
C. neutralisation
D. oxidation
Question 11
The oxidation number of Mn in the radical, \( \mathrm{MnO}_{4}^{-} \), is \( \ldots \ldots \ldots \).
A. +1
B. +3
C. +6
D. +7
Question 12
Propan-2-ol is a .........
A. primary alkanol
B. secondary alkanol
C. tertiary alkanol
D. dihydric alkanol
Question 13
Which of the following organic compounds is insoluble in distilled water?
A. \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} \)
B. \( \mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5} \)
C. \( \mathrm{CH}_{3} \mathrm{COOH} \)
D. \( \mathrm{CH}_{3} \mathrm{OH} \)
Question 14
The gaseous product of the reaction between dilute trioxonitrate (V) acid and copper turnings is ......
A. \( \mathrm{NO}_{2(\mathrm{~s})} \)
B. \( \mathrm{NO}_{1} \)
C. \( \mathrm{N}_{2} \mathrm{O}_{(\mathrm{s})} \)
D. \( \mathrm{H}_{2} \mathrm{O}_{(\mathrm{g})} \)
Question 15
In the treatment of water for town supply, chlorine is usually used to _____
A. add good taste to the water
B. Kill germs in the water
C. remove bad odour from the water
D. decolourise the water

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: