Related InterviewSolutions

• Which of the following dissolves in hot concentrated NaOH solution?A. FeB. ZnC. CuD. Ag
• Iron is rendered passive by treatment with concentratedA. HClB. `H_(2)SO_(4)`C. `HNO_(3)`D. both (B) & (C )
• Find the correct statement (i) Magnetic moment `Mn^(2+)` ions is `sqrt(35)` (ii) `1` Bohr Magneton `= 9.273 xx 10^(-24) J. "Tesla"^(-1)`A. Only i is correctB. Only ii is correctC. Only i & iii are correctD. All are correct
• Which of the following s a consitutent of lithoponeA. `ZnSO_(4)`B. `ZnS`C. `ZnCl_(2)`D. `ZnO`
• The atomic numbe of the element having magnetic numbe equal to `1.7 BM` in its `+2` oxidation state isA. 29B. 25C. 24D. 30
• The correct order of `E_(M^(2+)//M)^(@)` Values with negative sign for the four successive elements `Cr, Mn, Fe` and `Co` is:A. `Cr gt Mn gt Fe gt Co`B. `Mn gt Cr gt Fe gt Co`C. `Cr gt Fe gt Mn gt Co`D. `Fe gt Mn gt Cr gt Co`
• Which one of the following arrangements does not represent the correct order of the property stated against it?A. `Ni^(2+) lt Co^(2+) lt Fe^(2+) lt Mn^(2+)` ionic sizeB. `Co^(3+) lt Fe^(3+) lt Cr^(3+) lt Sc^(3+)` stability in aqueous solutionC. `Sc lt Ti lt Cr lt Mn` number of oxidation statesD. `V^(2+) lt Cr^(2+) lt Mn^(2+) lt Fe^(2+)` paramagnetic behaviour
• Which of the following cation is colourless in its aqueous solutionA. `Cu^(+2)`B. `Sc^(+3)`C. `Fe^(+3)`D. `Co^(+3)`
• The IP of Zr is `674kJ//"mole"`. The IP of Hf isA. `656 kJ`B. `760 kJ`C. `616 kJ`D. `631 kJ`
• The second IP of Cr is high due toA. `3d^(5)`B. `3d^(0)`C. `3d^(10)`D. `3d^(4)`