Which of the following elements in an organic compound cannot be detected by Lassaigne’s 

Which of the following elements present in an organic compound are detected are Lassaigne's test? (i) P (ii) X (iii) S (iv) N

Which element cannot be detected by Lassaigne's test?

In which of the following compounds, presence of nitrogen cannot be detected by Lassaigne's test-

Presence of nitrogen in which of the following compound cannot be detected by Lassaigne's test?

Presence of nitrogen in which of the following compound cannot be detected by Lassaigne's test?

Which one of the following elements cannot be detected by "Lassaigne's test"?

In which of the following compounds, nitrogen cannot be tested by Lassaigne.s test?