Unknown salt quiz

15 questions on colour, groups, and confirmatory tests. Then open a salt writeup.

1. Colour of hydrated copper sulphate (CuSO₄·5H₂O)?

   WhiteBlueGreenYellow

2. Odour of ammonium chloride?

   OdourlessVinegar-likeAmmoniacalRotten eggs

3. NH₄⁺ belongs to which group?

   Group IGroup IIIGroup 0Group V

4. Confirmatory test for Cl⁻?

   Brown ringLime water milkyCurdy white AgCl soluble in NH₄OHCanary yellow molybdate ppt

5. Brown ring at the junction of two layers confirms?

   SulphateNitrateChlorideAcetate

6. Cu²⁺ is precipitated in which group?

   IIIIVV

7. Blue lake test confirms?

   Zn²⁺Al³⁺Mg²⁺Ba²⁺

8. Apple-green flame indicates?

   Ca²⁺Sr²⁺Na⁺Ba²⁺

9. Lime water turning milky indicates?

   H₂SCO₂ / carbonateCl₂NH₃

10. White ppt of ZnS appears in?

    Group II (acidic H₂S)Group IIIGroup IV (alkaline H₂S)Group VI

11. Nessler’s reagent confirms?

    Al³⁺NH₄⁺Mg²⁺Na⁺

12. Chromyl chloride test is for?

    BromideIodideChlorideNitrate

13. Golden spangles on cooling are?

    PbCl₂PbI₂AgClBaSO₄

14. Group V reagent is?

    NH₄OHH₂S in acid(NH₄)₂CO₃Na₂HPO₄

15. Anhydrous copper sulphate is?

    BlueGreenWhiteBlack