on: Sodium is kept immer

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Q.
Assertion: Sodium is kept immersed in kerosene oil.
Reason: Sodium is very reactive metal.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(1)

Sodium is a very reactive metal. It reacts so vigorously that it catches fire if kept in the open. Therefore, to prevent the accidental fires, it is kept immersed in kerosene oil. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.

Solution

Q.
Assertion: Sodium is kept immersed in kerosene oil.
Reason: Sodium is very reactive metal.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(1)

Sodium is a very reactive metal. It reacts so vigorously that it catches fire if kept in the open. Therefore, to prevent the accidental fires, it is kept immersed in kerosene oil. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.

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Solution

Q. Assertion: Sodium is kept immersed in kerosene oil. Reason: Sodium is very reactive metal.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans. (1) Sodium is a very reactive metal. It reacts so vigorously that it catches fire if kept in the open. Therefore, to prevent the accidental fires, it is kept immersed in kerosene oil. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.

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Q.
Assertion: Sodium is kept immersed in kerosene oil.
Reason: Sodium is very reactive metal.

Ans.
(1)

Sodium is a very reactive metal. It reacts so vigorously that it catches fire if kept in the open. Therefore, to prevent the accidental fires, it is kept immersed in kerosene oil. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.