6 questions from 2023
During the borax bead test with \( \mathrm{CuSO_4} \), a blue green colour of the bead was observed in oxidising flame due to the formation of:
Which element is not present in Nesskr’s reagent?
Number of compounds giving (i) red colouration with ceric ammonium nitrate and also (ii) positive iodoform test from the following is ______.
Which of the following compounds would give the following set of qualitative analysis?(i) Fehling’s Test : Positive(ii) \( \mathrm{Na} \) Fusion extract upon treatment with sodium nitroprusside gives a blood red colour but not Prussian blue.
Compound that will give positive Lassaigne’s test for both nitrogen and halogen is:
In the wet tests for identification of various cations by precipitate, which transition element cation doesn’t belong to group IV in qualitative inorganic analysis?
