Q42. Give below are two statements: Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements. Statement II : Copper can not liberate hydrogen from weak acids. In the light of the above statements, choose the correct answer from the options given below :
(1) Both Statement I and Statement II are true
(2) Statement I is false but Statement II is true
(3) Both Statement I and Statement II are false
(4) Statement I is true but Statement II is false
Q43.
| | List - I | | List - II |
| \cline { 2 - 5 } | A. | $\mathrm { K } _ { 2 } \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right]$ | I. | $\mathrm { sp } ^ { 3 }$ |
| \cline { 2 - 5 } Match List I with List II | B. | $\left[ \mathrm { Ni } ( \mathrm { CO } ) _ { 4 } \right]$ | II. | $\mathrm { sp } ^ { 3 } \mathrm {~d} ^ { 2 }$ |
| \cline { 2 - 5 } | C. | $\left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] \mathrm { Cl } _ { 3 }$ | III. | $\mathrm { dsp } ^ { 2 }$ |
| \cline { 2 - 5 } | D. | $\mathrm { Na } _ { 3 } \left[ \mathrm { CoF } _ { 6 } \right]$ | IV. | $\mathrm { d } ^ { 2 } \mathrm { sp } ^ { 3 }$ |
| \cline { 2 - 5 } | | | | |
| \cline { 2 - 5 } |
Choose the correct answer from the options given below:
(1) A-III, B-I, C-IV, D-II
(2) A-III, B-I, C-II, D-IV
(3) A-I, B-III, C-II, D-IV
(4) A-III, B-II, C-IV, D-I