Assertion: The earth originally had a reducing atmosphere.
Reason : There was no life on the earth when it came into existance

Options

A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are true and Reason is not the correct explanation of Assertion
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false

Answer

To analyze the given assertion and reason, we can break down the solution into the following steps:

### Step 1: Understand the Assertion
The assertion states that "The earth originally had a reducing atmosphere." This refers to the early conditions of the Earth's atmosphere, which was believed to be rich in gases such as methane (CH4), ammonia (NH3), hydrogen (H2), and water vapor (H2O). These gases are characteristic of a reducing atmosphere, which is conducive to the formation of organic compounds.

**Hint:** Consider the composition of the early Earth's atmosphere and how it differs from today's atmosphere.

### Step 2: Understand the Reason
The reason states that "There was no life on the earth when it came into existence." This is also true, as the Earth was initially a hostile environment with extreme conditions that did not support life as we know it. Life on Earth is thought to have developed later through various chemical processes and evolutionary changes.

**Hint:** Think about the timeline of Earth's formation and the emergence of life.

### Step 3: Evaluate the Relationship Between Assertion and Reason
Both the assertion and the reason are true statements. However, the reason does not explain the assertion. The fact that the Earth had a reducing atmosphere does not directly relate to the absence of life at its inception. The reducing atmosphere is a condition that may have facilitated the origin of life, but the absence of life when Earth formed is a separate fact.

**Hint:** Analyze whether the reason provides a logical explanation for the assertion.

### Step 4: Conclusion
Since both the assertion and reason are true, but the reason does not explain the assertion, the answer to the question is that both statements are true, but the reason is not the correct explanation of the assertion.

**Final Answer:** Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

### Summary of the Steps:
1. **Understand the Assertion**: The early Earth had a reducing atmosphere.
2. **Understand the Reason**: Life did not exist when Earth formed.
3. **Evaluate Relationship**: Both are true, but the reason does not explain the assertion.
4. **Conclusion**: Answer is that both are true, but the reason is not an explanation.