State the inference drawn from the following observation:
On carrying out the flame test with a salt P a brick red flame was obtained. What is the cation in P?

Explanation

To solve the question, we need to analyze the observation given: a brick red flame was obtained when carrying out a flame test with a salt P. We need to identify the cation present in salt P based on this observation.

### Step-by-Step Solution:

1. **Understanding the Flame Test**: The flame test is a qualitative analysis technique used to identify the presence of certain metal ions based on the characteristic colors they emit when heated in a flame.

2. **Identifying the Flame Color**: In this case, the observation states that a brick red flame was obtained. We need to recall which cations produce this specific color.

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