Free Exam: Session1_25HKISOHR_Chemistry_Secondary3
Number of Questions in Test: 30
Number of Questions in Preview: 5
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[size=4]The ions Na⁺, Mg²⁺, and Al³⁺ have the same electronic arrangement as that of an atom of:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 2
[size=4]Which of the following ions is isoelectronic with neon (Ne) but will have the smallest radius?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 3
[size=4]Which of the following elements has the smallest atomic radius?[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 4
[size=4]Graphite electrodes are used in electrolysis. This is because graphite contains[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |
Question 5
[size=4]Bleaching powder is commonly used in households and swimming pools. Its main active chemical is:[/size]
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | No |