Assertion: Potassium can be used in the Lassaigne test.
Reason: Potassium reacts vigorously.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is incorrect but the Reason is correct.
  • D
    If the Assertion is incorrect but the Reason is incorrect.

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Similar Questions

Why is it necessary to use acetic acid and not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

In Lassaigne's extract of an organic compound,both nitrogen and sulphur are present,which gives blood red colour with $Fe^{3+}$ due to the formation of-

Sodium extract is heated with concentrated $HNO_3$ before testing for halogens because

In organic compounds,nitrogen is tested in Lassaigne's test as:

Match column $-I$ and column $-II$ with the correct relation:
Column $-I$ Column $-II$
$(i).$ Lassaigne's test $(a).$ By sodium peroxide
$(ii).$ Test for nitrogen $(b).$ Acidify with acetic acid
$(iii).$ Test for sulphur $(c).$ Acidify with conc. sulphuric acid
$(iv).$ Test for phosphorus $(d).$ Fusion with sodium

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