Class 12th

Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mⁿ⁺ ion are provided below; their λ_max values are marked as A, B and C respectively. The correct match between the complexes and their λ_max values is:

(i) [M(NCS)₆]⁽⁻⁶⁺ⁿ⁾
(ii) [MF₆]⁽⁻⁶⁺ⁿ⁾
(iii) [M(NH₃)₆]ⁿ⁺

The correct observation in the following reaction is:

Two compounds A and B with same molecular formula (C?H?O) undergo Grignard reaction with methylmagnesium bromide to give products C and D. Products C and D show following chemical tests. C and D respectively are:

The shape/structure of [XeF₅]⁻ and XeO₃F₂, respectively are:

The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between log(x/m) and log p gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of x/m at a pressure of 4 atm is: [numerical value].
(Given log3 = 0.4771)

The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x,y and z is [numerical value].
(A) Na?[Fe(CN)?(NOS)], (B) Na?[FeO?], (C) [Fe?(CO)?]

The Gibbs energy change (in J) for the given reaction at [Cu²?] = [Sn²?] = 1M and 298 K is  Cu(s) + Sn²?(aq) → Cu²?(aq) + Sn(s); (E?Sn²?/Sn = -0.16V, E?Cu²?/Cu = 0.34 V)
Take F = 96500 Cmol?¹

Consider the reaction sequence given below:

Which of the following statements is true:

The number of chiral carbons present in the molecule given below is 

The metal mainly used in devising photoelectric cells is: