STD 11 -p-Block elements - I — NEET STD 11 Science — Question

(Given : Atomic Number: F :9, $Cl : 17, Na =11$, $Mg =12, Al =13, K =19, Ca =20, Sc =21$ )

$X\xrightarrow{{{\text{Bromination}}}}Y\xrightarrow{{NaN{O_2} + HCl}}Z\mathop {\xrightarrow{{{\text{Boiling}}}}}\limits_{{C_2}{H_5}OH} {\text{Tribromobenzene}}$

$CaCO _{3}( s ) \rightarrow CaO ( s )+ CO _{2}( g )$ the values of $\Delta H ^{\circ}$ and $\Delta S^{\circ}$ are $+179.1 kJ mol ^{-1}$ and $160.2\,J / K$ respectively at $298 \,K$ and $1 \,bar$. Assuming that $\Delta H ^{\circ}$ and $\Delta S ^{\circ}$ do not change with temperature, temperature above which conversion of lime-stone to lime will be spontaneous is ........... $K$

$1.$ The succeeding operations that enable this transformation of states are

$(A)$ Heating, cooling, heating, cooling

$(B)$ Cooling, heating, cooling, heating

$(C)$ Heating, cooling, cooling, heating

$(D)$ Cooling, heating, heating, cooling

$2.$ The pair of isochoric processes among the transormation of states is

$(A)$ $K$ to $L$ and $L$ to $M$

$(B)$ $L$ to $M$ and $N$ to $K$

$(C)$ $L$ to $M$ and $M$ to $N$

$(D)$ $M$ to $N$ and $N$ to $K$

Give the answer question $1$ and $2.$