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Match the following:

(i) Caprolactam (ii) Acrylonitrile (iii) 2-chlorobuta-1,3-diene (iv) 2-Methylbuta-1,3-diene p>(a) Neoprene (b) Buna N (c) Nylon – 6 (d) Natural rubber... View Article

[latex]Fe{{C}_{2}}{{O}_{4}},F{{e}_{2}}{{({{C}_{2}}{{O}_{4}})}_{3}},FeS{{O}_{4}},F{{e}_{2}}{{(S{{O}_{4}})}_{3}}[/latex] one mole each, will react with how many moles of [latex]KMn{{O}_{4}}[/latex]

a.1 b.2 c.3 d.5 Answer: (b) \(\begin{array}{l}Fe{{C}_{2}}{{O}_{4}}+KMn{{O}_{4}} \end{array} \)→\(\begin{array}{l} {{}}F{{e}^{3+}}+C{{o}_{2}}+M{{n}^{2+}}\end{array} \) \(\begin{array}{l}F{{e}_{2}}{{\left( {{C}_{2}}{{O}_{4}} \right)}_{3}}+MnO_{4}^{-}\end{array} \) → \(\begin{array}{l}{{}}F{{e}^{3+}}\end{array} \) \(\begin{array}{l}F{{e}_{3}}{{O}_{4}}\end{array} \)... View Article

Which of the following is the strongest oxidizing agent?

\(\begin{array}{l}E{{{}^\circ }_{{{S}_{2}}O_{8}^{2-}/SO_{4}^{2-}}}=2.05V\end{array} \) \(\begin{array}{l}E_{B{{r}_{2}}/B{{r}^{-}}}^{o}=1.40V\end{array} \) \(\begin{array}{l}E_{A{{u}^{3+}}/Au}^{o}=1.10V\end{array} \) \(\begin{array}{l}E_{{{O}_{2}}/{{H}_{2}}O}^{o}=1.20V\end{array} \) Answer: (a) a.\(\begin{array}{l}{{S}_{2}}O_{8}^{2-}\end{array} \) b.Br2 c.Au+3 d.O2 More is Positive standard... View Article

Given complexes are low spin complexes,

\(\begin{array}{l}{{[V{{(CN)}_{6}}]}^{4-}}\end{array} \) \(\begin{array}{l}{{[Cr{{(N{{H}_{3}})}_{6}}]}^{2+}}\end{array} \) \(\begin{array}{l}{{[Ru{{(N{{H}_{3}})}_{6}}]}^{3+}}\end{array} \) \(\begin{array}{l}{{[Fe{{(CN)}_{6}}]}^{4-}}\end{array} \) Then order of magnetic moment (μ) for \(\begin{array}{l}{{V}^{2+}},F{{e}^{2+}},C{{r}^{+3}},R{{u}^{3+}}\end{array} \) is a. \(\begin{array}{l}{{V}^{2+}}>C{{r}^{2+}}>F{{e}^{2+}}>R{{u}^{3+}}\end{array}... View Article

Which of the following lanthanoid ions are coloured?

1.Lu+3 2. Pm+3 3.Sm+3 4.Eu+3 a. \(\begin{array}{l}L{{u}^{+3}},P{{m}^{+3}},S{{m}^{+3}}\end{array} \) b. \(\begin{array}{l}P{{m}^{+3}},S{{m}^{+3}},E{{u}^{+3}}\end{array} \) c. \(\begin{array}{l}L{{u}^{+3}},P{{m}^{+3}},S{{n}^{+3}}\end{array} \) d. \(\begin{array}{l}L{{u}^{+3}},S{{m}^{+3}},E{{u}^{+3}}\end{array} \) Answer: (b) \(\begin{array}{l}P{{m}^{+3}},S{{m}^{+7}},E{{u}^{+7}}\end{array}... View Article

In which of the following order of hydration energy correct.

a.\(\begin{array}{l}L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}>C{{s}^{+}}\end{array} \) b.\(\begin{array}{l}L{{i}^{+}}<N{{a}^{+}}<{{K}^{+}}<R{{b}^{+}}<C{{s}^{+}}\end{array} \) c.\(\begin{array}{l}L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>C{{s}^{+}}>R{{b}^{+}}\end{array} \) d.\(\begin{array}{l}L{{i}^{+}}<N{{a}^{+}}<{{K}^{+}}<C{{s}^{+}}<R{{b}^{+}}\end{array} \) Answer: (a) Hydration energy α charge, αsize1 ∴\(\begin{array}{l}L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}>C{{s}^{+}}\end{array} \)