If in an organic compound both N and S elements are present in Lassaigne's test which ion may be found ?

The organic compound which does not give blue colour in Lassaigne's test is:

I. Read the following passage and answer questions 1 - 5 that follow: Nitrogen, sulphur and halogens in an organic compound are detected by Lassaigne's test in which the organic compound is fused with sodium metal. During fusion N is converted to NaCN, S to Na_2 S and halogens to sodium halides. What colour will you get in Lassaigne's test if the compound contains both N and S?

Organic compound is fused with sodium piece in Lassaigne's test in order to

Which of the following organic compound will give red colour in Lassaigne's test?

A compound which does not give a positive test in Lassaigne.s test for nitrogen is

If N and S both are present in an organic compound, during Lassaigne's test both changes to