42. B(OH)3 + NaOH NaBO2 + Na[B(OH4)] + H2O How can this reaction is made to proceed in forward direction?
(a) Addition of cis-1, 2-diol (b) Addition of borax
(c) Addition of trans-1, 2-diol (d) Addition of Na2HPO4.
43. The percentage of -character in the orbitals forming P – P bonds in P4 is
(a) 25 (b) 33 (c) 50 (d) 75
44. Aqueous solution of Na2S2O3 on reaction with Cl2 gives
(a) Na2S4O6 (b) NaHSO4 (c) NaCl (d) NaOH 51
45. The compounds used as refrigerant is/are
(a) NH3 (b) CCl4 (c) CF4 (d) CF2Cl2
(a) Addition of cis-1, 2-diol (b) Addition of borax
(c) Addition of trans-1, 2-diol (d) Addition of Na2HPO4.
43. The percentage of -character in the orbitals forming P – P bonds in P4 is
(a) 25 (b) 33 (c) 50 (d) 75
44. Aqueous solution of Na2S2O3 on reaction with Cl2 gives
(a) Na2S4O6 (b) NaHSO4 (c) NaCl (d) NaOH 51
45. The compounds used as refrigerant is/are
(a) NH3 (b) CCl4 (c) CF4 (d) CF2Cl2
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