Unknown Chemical solutions | Nursing School Essays

Unknown Chemical solutions | Nursing School Essays

We had 3 colourless solutions Q, R & S. We also had an orange coloured solution that was called reagent X. We had to carry out tests with Q, R & S with reagent X, then with Fehling’s solution and then finally with Sodium Hydrocarbonate. 
Here were the results I obtained:
Addtion of X:
Q – Orange/brown solution formed
R – Purple solution formed
S – Pale yellow solution formed
With Fehlings:
Q – Brick red ppt formed
R – Brick red ptt formed
S – No obseverable change
With Sodium Hydrocarbonate:
Q & R – No reaction
S – Gas evolved
I am looking for the identity of Q,R,S and reagent X