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Course: Class 11 Chemistry (India) > Unit 11

Lesson 1: Group-13 elements
Science
Class 11 Chemistry (India)
The p-block elements
Group-13 elements
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Chemical reactions of Aluminium

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Problem

A piece of aluminium foil is taken in different test tubes and unknown reagents are added to each of them. Then, a burning matchstick is brought near the mouth of each test tube and 'pop' sound is heard.
Note: A 'pop' sound indicates the formation of hydrogen gas.
In which of the following cases, a pop sound can be heard?
Choose all answers that apply: