The compound that does not give a blue colour in Lassaigne's test is

The compound that does not give a blue colour is Lassaigne's test is

The compound that does not give a blue color in Lassaigne's test is

The compound that does not give a blue color in Lassaigne's test is

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

Which of the following compounds does not give Prussian blue color during Lassaigne's test for the detection of nitrogen?

The covalent compound which does not give positive test in Lassaigne's test is