Question
Easy
Which of the following substances are present on the rubbing surface of a matchbox ?
1
Glass powder and red phosphorus
2
White phosphorus and glass powder
3
Red phosphorus and magnesium
4
Potassium and white phosphorus
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Combustion and Fuels
Topic: Combustion
Correct Answer
Option A
Explanation
Option 1, which states that "Glass powder and red phosphorus" are present on the rubbing surface of a matchbox, is the correct answer. Here's why: 1. Explanation for Option 1: - Red Phosphorus: Red phosphorus is a crucial component on the striking surface of a matchbox. It is a stable form of phosphorus that, when subjected to friction, can convert into white phosphorus, which is highly reactive and ignites easily.тАжRead More
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