Number of amphoteric compounds among the following is.
(A) BeO
(B) Bao
(c) `Be(OH)_2`
(D) `Sr(OH)_2`

The number of paramagentic species among the following is O_(2), CO, N_(2), C_(2), CsO_(2), BaO_(2), CO_(2)

How many compounds show amphoteric nature amongst following B_(2)O_(3),TI_(2)O_(3),Al(OH)_(3),Ga(OH)_(3),Al_(2)O_(3),Ga_(2)O_(3),NaAlO_(2),Sr(OH)_(2),Cr_(2)O_(3)

In the following reaction : B(OH)_(3)+H_(2)Oto[B(OH)_(4)]+H^(+) :

Which of the following is an amphoteric hydroxide? (a) Mg(OH)_2 (b) Be(OH)_2 (c) Sr(OH)_2 (d) Ca(OH)_2

The valency of calcium is 2. Write the valencies of other radicals in the following compounds : (a) CaO (b) Ca(OH)_(2) (c ) CaCO_(3) (d) CaCl_(2)

Amongst the following, the total number of compounds soluble in concentrated NH_(3) solution is: (A) Ag_(2)CrO_(4) , (B) Cu(OH)_(2).CuSO_(4) , ( C) PbSO_(3) , (D) Al(OH)_(3) , (E) Ni(OH)_(2) (F) Zn_(3)(PO_(4))_(2) , (G) BaSO_(4) , (H) Bi(OH)_(2)NO_(3) , (I) Mn(OH)_(2)

How many will undergo haloform reaction among the following ? CH_(3)COCH_(3), " " CH_(3)CH(OH)CH_(3)," " CH_(3)OH, " " C_(2)H_(5)OH CH_(3)CH_(2)CH_(2)OH

What single reagent solution (including H_(2)O) could be used to effect the separation of the following of solides? a. Ni(OH)_(2) and Fe(OH)_(2) b. Cr_(2)O_(3) and Fe(OH)_(3)

Find the ratio by mass of the combining elements in the following compounds. a) CaCO_(3) b) MgCl_(2) c) H_(2)SO_(4) , d) C_(2)H_(5)OH e) NH_(3) , f) Ca(OH)_(2)

In which of the following the oxidation number of oxygen has been arranged in increasing order : (a) BaO_(2) (b) BaO_(2) (c) OF_(2) (d) KO_(2) < OF_2 < O_(3) < BaO_(2)