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Magazine Problem 116
The process (es) requiring the absorption of energy is/ are : (a) \(\mathrm{Cl} \rightarrow \mathrm{Cl}^{-}\) (b) \(\mathrm{O}^{-} \rightarrow \mathrm{O}^{2-}\) (c) \(\mathrm{Fe}^{3+} \rightarrow \mathrm{Fe}^{2+}\) (d) \(\mathrm{Ar} \rightarrow \mathrm{Ar}\)
Problem 117
Increasing order of second ionization energy is (a) \(\mathrm{Ne}>\mathrm{O}>\mathrm{F}>\mathrm{N}>\mathrm{B}>\mathrm{C}>\mathrm{Be}\) (b) \(\mathrm{Be}<\mathrm{C}<\mathrm{B}<\mathrm{N}<\mathrm{F}<\mathrm{O}<\mathrm{Ne}\) (c) \(\mathrm{Be}<\mathrm{B}<\mathrm{C}<\mathrm{N}<\mathrm{O}<\mathrm{F}<\mathrm{Ne}\) (d) \(\mathrm{B}<\mathrm{C}<\mathrm{N}<\mathrm{O}<\mathrm{F}<\mathrm{Be}<\mathrm{Ne}\)
Problem 118
Decreasing order of electron affinity is (a) \(\mathrm{F}>\mathrm{Cl}>\mathrm{Br}>\mathrm{I}>\mathrm{S}>\mathrm{Si}\) (b) \(\mathrm{Si}>\mathrm{S}>\mathrm{F}>\mathrm{Cl}>\mathrm{Br}>\mathrm{I}\) (c) \(\mathrm{Cl}>\mathrm{F}>\mathrm{Br}>\mathrm{I}>\mathrm{S}>\mathrm{Si}\) (d) \(\mathrm{Cl}>\mathrm{F}>\mathrm{Br}>\mathrm{S}>\mathrm{Si}>\mathrm{I}\)
Problem 119
Which of the following is arranged in the order of decreasing electropositive character ? (a) \(\mathrm{Fe}, \mathrm{Mg}, \mathrm{Cu}\) (b) \(\mathrm{Mg}, \mathrm{Cu}, \mathrm{Fe}\) (c) \(\mathrm{Mg}, \mathrm{Fe}, \mathrm{Cu}\) (d) \(\mathrm{Cu}, \mathrm{Fe}, \mathrm{Mg}\)
Problem 120
An element has exceptional outer electronic configuration as \(4 \mathrm{~d}^{10} 5 \mathrm{~s}^{\circ}\). It belongs to
Problem 120
Match the following List-I List-II - \(\mathrm{Ti}^{3+}\) (p) Paramagnetic (a) (b) \(\mathrm{Cu}^{2+}\) (q) Coloured (c) \(\mathrm{Co}^{2+}\) (r) One un-paired electron ) (d) \(\mathrm{Zn}^{2+}\) (s) Diamagnetic
Problem 121
The correct order of atomic size of \(\mathrm{C}, \mathrm{N}, \mathrm{P}\) and
\(\mathrm{S}\) follows the order
(a) \(\mathrm{C}<\mathrm{N}<\mathrm{S}<\mathrm{P}\)
(b) \(C Problem 121 $$
\begin{aligned}
&\text { Match the following }\\\
&\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { (a) } \mathrm{Ce}^{4+} & \text { (p) Oxidizing agent in volu- }
\\\
\text { metric analysis } \\
\text { (b) } \mathrm{Nd}^{3+} & \text { (q) Misch metal } \\
\text { (c) } \mathrm{La}^{3+} & \text { (r) Colourless salts } \\
\begin{array}{ll}
\text { (d) } \mathrm{Pr}^{3+} & \text { (s) Coloured glases for gog- } \\
\text { gles. }
\end{array} \\
\hline
\end{array}
\end{aligned}
$$ Problem 122 When the sample of copper with zinc impurity is to be purified by
electrolysis, the appropriate electrodes are [2002] Cathode Anode
\(\begin{array}{ll}\text { (a) pure zinc } & \text { pure copper }\end{array}\)
(b) pure copper impure sample
(c) impure zinc impure sample
(d) impure sample pure copper Problem 123 Match the following
\begin{tabular}{c|c} Column-I & Column-II \end{tabular}
(a) \(C>\mathrm{N}\)
(p) More favourable (exothermic) electron affinity.
(b) \(\mathrm{Se}>\mathrm{Br}\)
(q) The higher first ionization energy.
(c) \(\mathrm{Mg}>\mathrm{K}\)
(r) The larger size
(d) \(\mathrm{F}>\mathrm{Cl}\)
(s) The higher electronegativity.
(t) The higher number of valence electrons.
