MCQ
Which of the following expression for an irreverssible process.
  • $dS > \frac{{dq}}{T}$
  • B
    $dS = \frac{{dq}}{T}$
  • C
    $dS < \frac{{dq}}{T}$
  • D
    $dS = \frac{{dU}}{T}$

Answer

Correct option: A.
$dS > \frac{{dq}}{T}$
a

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The heat change $\Delta H$ for the reaction $2CO + {O_2} \to 2C{O_2};\,\Delta H = - 135\,kcal$ is called
The acid used in lead storage battery is
$STATEMENT-1$: $\quad \mathrm{Pb}^{4+}$ compounds are stronger oxidizing agents than $\mathrm{Sn}^{4+}$ compounds.and

$STATEMENT-2$: The higher oxidation states for the group $14$ elements are more stable for the heavier members of the group due to 'inert pair effect'.

Which of the following order of $CFSE$ is incorrect ?
Sample of $ 2, 3-$ dibromo $-3-$ methylpentane is heated with zinc dust. The resulting product is isolated and heated with $HI$ in the presence of phosphorus. Indicate which is the structure that represent the final organic product formed in the reaction
Given :

$(i)\,2Fe(s)\, + \,\frac{3}{2}\,{O_2}\,(g)\, \to \,F{e_2}{O_3}\,(s)\,;$            $\Delta {H^\Theta }\, = \ \,-193.4\,kJ$

$(ii)\,Mg(s)\, + \,\,{O_2}\,(g)\, \to \,MgO\,(s)\,;$                 $\Delta {H^\Theta }\, = \, - \,140.2\,kJ$

What is $\Delta {H^\Theta }$ of the reaction ?

$3Mg + Fe_2O_3 \to 3MgO + 2Fe$

.......$kJ$

What is the expected order of reactivity of the following compounds in  electrophilic chlorination $(Cl_2 + FeCl_3)$?
(more reactive $>$ less reactive)
Krypton ${(_{36}}Kr)$ has the electronic configuration ${(_{18}}Ar)$ $4{s^2},3{d^{10}},4{p^6}$. The ${37^{th}}$ electron will go into which one of the following sub-levels
When the electron passes from energy state nearest to the nucleus to third energy level, it will :
Chlorine reacts with hot and concentrated $NaOH$ and produces compounds $(X)$ and $(Y)$. Compound $(X)$ gives white precipitate with silver nitrate solution. The average bond order between $Cl$ and $O$ atoms in $(Y)$ is