plss help me out with this ques asap - Chemistry - The d-and f-Block Elements

Question

plss help me out with this ques asap

Srishti Bhadauria · Accepted Answer

Dear student
No precipitate is
obtained
A blue-colored ppt
is obtained
A black colored ppt
is obtained
Ni2+ in presence of
ammonia gives a rosy red precipitate of bis(dimethylgyoximato)
nickle (II)
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_615e887a25271%20png"
style="width: 1023px; height: 278px;">

Regards

plss help me out with this ques...asap

No precipitate is obtained

A blue-colored ppt. is obtained

A black colored ppt. is obtained