Q. The carbon-based reduction method is not used for the extraction of :

1. tin from $Sn{O}_2$
2. aluminium from $A{l}_2{O}_3$
3. iron from $F{e}_2{O}_3$
4. magnesium from $MgC{O}_3,CaC{O}_3$

Q. The precipitate $\left(P\right)$ contains:

1. $P{b}^{2+}$
2. $A{g}^{+}$
3. $H{g}^{2+}$
4. $H{g}_2^{2+}$

Q. The major product(s) of the following reaction is(are):

1. $P$
2. $Q$
3. $S$
4. $R$

Q. The thermal dissociation equilibrium of $CaC{O}_3\left(s\right)$ is studied under different conditions.
$CaC{O}_3\left(s\right)\rightleftharpoons CaO\left(s\right)+C{O}_2\left(g\right)$
For this equilibrium, the correct statement(s) is (are):

1. $\Delta H$ is dependent on T
2. K is independent of the initial amount of $CaC{O}_3$
3. K is dependent on the pressure of $C{O}_2$ at a given T
4. $\Delta H$ is independent of the catalyst, if any

Q. After completion of the reactions ($I$ and $II$), the organic compound(s) in the reaction mixtures is(are):

1. Reaction $I:P$ and Reaction $II:P$
2. Reaction $I:U$, acetone and Reaction $II:Q$, acetone
3. Reaction $I:T,U$, acetone and Reaction $II:P$
4. Reaction $I:R$, acetone and Reaction $II:S$, acetone

Q. The coloured solution $\left(S\right)$ contains :

1. $F{e}_2({SO}_4{)}_3$
2. $ZnS{O}_4$
3. $CuS{O}_4$
4. $N{a}_{2}Cr{O}_4$

Q. The $K_{sp}$ of $A{g}_{2}Cr{O}_4$ = $1.1\times {10}^{-10}$, what is the value of solubility, $S$?

1. $1.1\times {10}^{-11}$
2. $3.02\times {10}^{-4}$
3. $1.1\times {10}^{-12}$
4. $3.02\times {10}^{-9}$

Q. The correct statement(s) about $O_3$ is(are):

1. O-O bond lengths are equal
2. thermal decomposition of $O_3$ is endothermic
3. $O_3$ is diamagnetic in nature
4. $O_3$ has a bent structure

Q. In the following reaction, the product(s) formed is(are):

1. Q(minor)
2. P(major)
3. R(minor)
4. S(major)

Q. In the nuclear transmutation,

1. $p,D$
2. $\gamma ,n$
3. $n,D$
4. $\gamma ,p$