1.Holoform test is given by
a) Ethanal b) Propanone c) Butanone d) Propan-2-ol
2. Which of the following are diamagnetic?
a)[Ni(H2O)6]+2 b)[Ni(CN)4]-2 c) [Zn (NH3)4]+2 d) [Co(NH3)6]+3
3. Primary, Secondary and Tertiary amine can be distinguished by the action of
a) CS2/HgCl2 b) NaNO2/HCl c) CHCl3/KOH d) X2/NaOH
391) Haloform test..??
B), C), D)
3) Best test would be diazotization, B). But if you want all, A) and C) also work though only for primary amine. D) is for amides.
29@pritish...
the best test for detection of primary,secondary and tertiary amines shud be Carbylamine and Hinsberg....Diazotisation is helpful only in case of aromaric amines
39govind don't we have to check by making orbital boxes like in NCERT? We can't be sure of diamagnetism just because the ligands are strong-field ones, can we..?
Yes Hinsberg is there but it is not mentioned here, so I thought diazotization...because it gives products(though not alcohols) for secondary and tertiary amines also. Carbylamine reaction gives products only for primary amine. How will you distinguish between secondary and tertiary?
29Secondary and tertairy amines can be distinguished by Hinsberg test..
At the beginer level these question can be done by drawing the boxes like those in the NCERT...but by practice and experience..u may do these questions without drawing the boxes and for strong and weak field ligands u may refer to the spectrochemical series given in NCERT