JEE Advanced 2018 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

The correct statement(s) regarding the binary transition metal carbonyl compounds is(are) (Atomic numbers : $$Fe = 26,Ni = 28$$)

Total number of valence shell electrons at metal center in $$Fe{\left( {CO} \right)_5}\,\,$$ or $$Ni{\left( {CO} \right)_4}$$ is $$16$$

These are predominantly low spin in nature

Metal-carbon bond strengthens when the oxidation state of the metal is lowered.

The carbonyl $$C-O$$ bond weakens when the oxidation state of the metal is increased

JEE Advanced 2017 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

Addition of excess aqueous ammonia to a pink colored aqueous solution of $$MC{l_2},6{H_2}O\left( X \right)$$ and $$N{H_4}Cl$$ gives an octahedral complex $$Y$$ in the presence of air. In aqueous solution, complex $$Y$$ behaves as $$1:3$$ electrolyte. The reaction of $$X$$ with excess $$HCl$$ at room temperature results in the formation of a blue colored complex $$Z.$$ The calculated spin only magnetic moment of $$X$$ and $$Z$$ is $$3.87$$ $$B.M.,$$ whereas it is zero for complex $$Y.$$ Among the following options, which statement(s) is (are) correct?

Addition of silver nitrate to $$Y$$ gives only two equivalents of silver chloride

The hybridization of the central metal ion in $$Y$$ is $${d^2}s{p^3}$$

$$Z$$ is a tetrahedral complex

When $$X$$ and $$Z$$ are in equilibrium at $${0^ \circ }C,$$ the color of the solution is pink

IIT-JEE 2009 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

The compound(s) that exhibit(s) geometrical isomerism is(are)

$$\mathrm{\left[ {Pt(en)C{l_2}} \right]}$$

$$\mathrm{\left[ {Pt{{(en)}_2}} \right]C{l_2}}$$

$$\mathrm{\left[ {Pt{{(en)}_2}C{l_2}} \right]C{l_2}}$$

$$\mathrm{\left[ {Pt{{(N{H_3})}_2}C{l_2}} \right]}$$

JEE Advanced Subjects