MCQ
When a liquid boils, there is
- ✓An increase in entropy
- BA decrease in entropy
- CAn increase in heat of vaporization
- DAn increase in free energy
✓
Answer
Correct option: A.
An increase in entropy
(a)Liquid $\xrightarrow{{}}$ Vapour, entropy increases.
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
$1.12\, ml$ of a gas is produced at $STP$ by the action of $4.12\, mg$ of alcohol, with methyl magnesium iodide. The molecular mass of alcohol is
→Glucose has optical isomers
Match List $I$ and with List $II$
→| List-$I$ (Molecule) | List-$II$(Shape) |
| $A$ $\mathrm{NH}_3$ | $I$ Square pyramid |
| $B$ $\mathrm{BrF}_5$ | $II$ Tetrahedral |
| $C$ $\mathrm{PCl}_5$ | $III$ Trigonal pyramidal |
| $D$ $\mathrm{CH}_4$ | $IV$ Trigonal bipyramidal |
Choose the correct answer from the option below :
In which of the following arrangements, the order is not correct according to the properry indicated against it?
In context with the transition elements, which of the following statements is incorrect?
The major product obtained when this substrate is subjected To $E_2$ reaction under the treatment of potassium tert. butoxide
→An organic compound is estimated through Dumus method and was found to evolve $6\,mole$ of $CO_2\,\,4\,moles$ of $H_2O$ and $1\,mole$ of nitrogen gas. The formula of the compound is
→The rate of a chemical reaction doubles for every $10\,^o C$ rise of temperature. If the temperature is raised by $50\,^o C,$ the rate of the reaction increases by about ......... times
→When a salt of weak acid and weak base is dissolved in water at $25\,^oC$, the $pH$ of the resulting solution will always :-
→Match List $- I$ with List$-II.$
→| List $- I$ | List $- II$ |
| $(a)$ $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ | $(i)$ $5.92 \,\mathrm{BM}$ |
| $(b)$ $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ | $(ii)$ $0 \,\mathrm{BM}$ |
| $(c)$ $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ | $(iii)$ $4.90\, \mathrm{BM}$ |
| $(d)$ $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$ | $(iv)$ $1.73\, \mathrm{BM}$ |
Choose the correct answer from the options given below.