Which sugar does not give benedict test?

Which does not give borax bead test?

Which compound does not give positive test in Lassaigne's test for nitrogen ?

Assertion : all monosaccharides give benedict's test Reason : all monosaccharide contain free aldehyde or ketonic group

Assertion : all monosaccharides give benedict's test Reason : all monosacchaide contain free aldehyde or ketonic group

A compound which does not give positive test in the Lassaignes' test for nitrogen is

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