MCQ
Which of the following statements is true
- A$\Delta E$ is always greater than $\Delta H$
- B$\Delta E$ is always less than $\Delta H$
- ✓$\Delta E$ may be lesser or greater or equal to $\Delta H$
- D$\Delta E$ is always proportional to$\Delta H$
✓
Answer
Correct option: C.
$\Delta E$ may be lesser or greater or equal to $\Delta H$
(c) $\Delta E$ may be greater or lesser or equal to $\Delta H$.
$\because \Delta H = \Delta E + P\Delta V = \Delta E + \Delta nRT.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which molecule have triagonal bipyramidal geometry
Which one of the following has $\Delta {S^o}$ greater than zero
→phenol $\xrightarrow[\Delta ]{{{H^ \oplus }}}X\,\xrightarrow[{(2)\,\,{H_2}O/Zn}]{{(1)\,\,{O_3}}}Y\,;$ $Y$ is
→$R - X + NaOH\xrightarrow{{}}ROH + NaX$
→The above reaction is classified as
The weight of pure $NaOH$ required to prepare $250\,c{m^3}$ of $0.1\,N$ solution is ......... $gm$
→$x =$ moles of anhydride consumed
→Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?
The molar heat capacity of water at constant pressure is $75\, JK^{-1}\, mol^{-1}$. When $1\,kJ$ of heat is supplied to $100\, g$ of water, which is free to expand, the increase in temperature of water is ............... $K$
→Which pair show cis-trans isomerism
Match the column for molecular shape ?
→| Column $I$ | Column $II$ |
| $(a)\,XeO_6^{-4}$ | $(P)$ Tetrahedral |
| $(b)\,ClO_2$ | $(Q)\,V-$ Shape |
| $(c)\,NH_4^+$ | $(R)$ Trigonal Bipyramidal |
| $(d)\,XeO_3F_2$ | $(S)$ Octahedral |