Question 3 :
<div>Assertion: The more negative is the standard reduction potential, greater is its ability to displace H$_2$ from acid.</div><div>Reason: Strength of reducing agent increases with the increase in the negative value of the standard reduction potential.<br/></div>

Question 4 :
Peroxodisulphate salts (e.g. {tex} \left. \mathrm { Na } _ { 2 } \mathrm { S } _ { 2 } \mathrm { O } _ { 8 } \right) {/tex} are strong oxidizing agents used as bleaching agents for fats, oils, etc <BR>Given:<br>{tex} \mathrm { O } _ { 2 } ( \mathrm { g } ) + 4 \mathrm { H } ^ { \oplus } ( \mathrm { aq } ) + 4 e ^ { - } \rightarrow 2 \mathrm { H } _ { 2 } \mathrm { O } ( l ) \quad \mathrm E ^ { \ominus } = 1.23 \mathrm { V } {/tex} <BR>{tex} \mathrm { S } _ { 2 } \mathrm { O } _ { 8 } ^ { 2 - } ( \mathrm { aq } ) + 2 \mathrm e ^ { - } \rightarrow 2 \mathrm {SO} _ { 4 } ^ { 2 - } ( \mathrm { aq } ) \mathrm { E } ^ { \ominus } = 2.01 \mathrm { V } {/tex}<br>Which of the following statements is (are) correct?

Question 6 :
<b>Question below</b> refers to the overall reaction and half-reactions with standard reduction potentials below.<br/>$2Fe^{2+} + Cl_2 \rightarrow 2Fe^{3+} + 2Cl$?<br/>$Fe^{3+} + e^- \rightarrow Fe^{2+}$; $E^o_{red}$ = 0.77 volts<br/>$Cl_2 + 2e^- \rightarrow 2Cl^-$ ; $E^o_{red}$ = 1.36 volts<br/><div>Find the overall potential for the reaction ?</div>

Question 7 :
Given:<br> {tex} \mathrm { A } ^ { 2 + } + 2 \mathrm e ^ { - } \rightarrow \mathrm { A } ( \mathrm { s } ) \quad \mathrm E ^ { \ominus } = 0.8 \mathrm { V } {/tex} <br>{tex} \mathrm { B } ^ { \oplus } + \mathrm e ^ { - } \rightarrow \mathrm { B } ( \mathrm { s } ) \quad \mathrm E ^ { \ominus } = - 0.64 \mathrm { V } {/tex}<br> {tex} \mathrm { X } _ { 2 } ( \mathrm { g } ) + 2 \mathrm e ^ { - } \rightarrow 2 \mathrm { X } ^ { \ominus } \quad \mathrm E ^ { \ominus } = 1.03 \mathrm { V } {/tex}<br> Which of the following statements is/are correct?

Question 10 :
The oxidation potential of $Zn, Cu, Ag, { H }_{ 2 }$ and $Ni$ are 0.76, -0.34, -0.80, 0, 0.55 volt respectively. Which of the following reaction will provide maximum voltage?

Question 11 :
<p> <font face="Cambria Math, serif">Red hot carbon will remove oxygen from the oxides XO and YO but not from ZO. Y will remove oxygen from XO. Use this evidence to deduce the order of activity of the three metals X, Y, and Z, putting the most reactive first</font></p>

Question 12 :
<p> <font face="Cambria Math, serif">Which of the following statements is wrong?</font></p>

Question 13 :
Assertion: $Cu^{2+}$ ions get reduced more easily than $H^+$ ions. Reason: Standard electrode potential of copper is $0.34$V.

Question 14 :
<p> <font face="Cambria Math, serif">A KI solution containing starch, turns blue on the addition of chlorine. Which of the following statements explain(s) this?</font></p>

Question 15 :
<p> <font face="Cambria Math, serif">When a lead storage battery is discharged</font></p>

Question 16 :
Crystallographers of the ninteenth century measured angles of crystals and their various geometric qualities. It gradually became clear that the beautiful forms of crystals come from the packing of elementary matter in:

Question 17 :
In which of the following systems interfacial angles {tex} \alpha = \gamma = 90 ^ { \circ } {/tex} but {tex} \beta \neq 90 ^ { \circ } ? {/tex}

Question 18 :
In a closed packed structure of mixed oxides, the lattice is composed of mixed oxides ions. One-eighth of tetrahedral voids are occupied by divalent cations $(A^{2+})$ while one half of octahedral voids are occupied by trivalent cations $(B^{3+ })$. The formula of mixed oxide is :

Question 19 :
Following three planes {tex} \left( \mathrm { P } _ { 1 } , \mathrm { P } _ { 2 } , \mathrm { P } _ { 3 } \right) {/tex} in an fcc unit cell are shown in the figure below. Consider the following statements and choose the correct option/options that follow:<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/JEE%20Advanced/5e5cccbb5a01bb76c9a33390"><br>

Question 21 :
If the radius of $Mg^{2+}$ion, $Cs^{+}$ion, $O^{2-}$ion $S^{2-}$ion and $ Cl^{-}$ ion are $0.65\ A^o$, $1.69\ A^o$, $1.40\ A^0$, $1.84\ A^o$ and $1.81\ A^o$ respectively. The co-ordination numbers of the cations in the crystals of $MgS$, $MgO$ and $CsCl$ are, respectively :

Question 22 :
Edge length of $M^+ X^-$ (fcc structure) is $7.2\mathring{A}$. Assuming $M^+ \to X^-$ contact along the cell edge, radius of $X^-$ ion is $(r_{M^+} = 1.6 \mathring{A})$

Question 24 :
In diamond, carbon atom occupy FCC lattice points as well as alternate tetrahedral voids. If edge length of the unit cell is $356$ pm, then the radius (in pm) of carbon atom is:

Question 26 :
<p> <font face="Cambria Math, serif">Which of the following is/are covalent solids?</font></p>

Question 27 :
<p> <font face="Cambria Math, serif">Given is the arrangement of atoms in a crystllographic plane. Which plane correctly represent(s) the adjacent drawn structure?</font></p> <p><img style='object-fit:contain' align="bottom" src="https://storage.googleapis.com/teachmint/question_assets/JEE%20Advanced/60009297c4cbb406e880502a"/>

Question 28 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p>An ionic compound $XY$ forms a crystal structure in which $'Y'$ atoms form ccp lattice and $'X'$ atoms are so positioned that each $'X'$ atom touches $6$ $'Y'$ atoms. If the nearest distance between two $'X'$-atoms is $2\sqrt{2}$, then the density $\left ( g/cm^{3} \right )$ of $XY$ crystal is :</p><span class="wysiwyg-font-size-small"></span><p></p><span class="wysiwyg-font-size-small"></span><p></p><p>(Given : At. mass of X = 14, At. Mass of Y = 50, Avogadro's number $= 6\times 10^{23}$)</p>

Question 29 :
A mineral having the formula $AB_2$ crystallizes in the cubic closed packed lattice with $A^{2+}$ atoms occupying the lattice points and $B^-$, tetrahedral voids. The co-ordination number of $A$ and $B$ and fraction of the tetrahedral sites occupied by $B$ atoms, respectively, are:

Question 30 :
A layered sequence for an FCC = CCP metal is shown below :<br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Advanced/5e8b1b95dc6c0902477349e8' height='95' width='297' ><br>A face diagonal passes through the centre of atom 4 and the centre (s) of which other atom (s)?