Most Important Selected Qs for JEE AdvancedChemistryd and f Block Elements
A salt (X) is heated in a dry test tube. Reddish brown fumes (Y) are evolved which turn potassium dichromate paper green and starch iodide paper blue (Y) is found to be paramagnetic. Then :
Options
- AX may be KNO ₃
- BX may be ZnBr ₂
- CX may be Mg ( NO ₃ )₂
- DY turns red litmus blue
Correct answer
D. Y turns red litmus blue
Step-by-step solution
Y is NO ₂ . Hence ( X ) may be Mg ( NO ₃ )₂ .