MCQ
The mixture which shows positive deviation from Raoult's law is 
  • A
    Chloroethane $+$ Bromoethane
  • Ethanol $+$ Acetone
  • C
    Benzene $+$ Toluene
  • D
    Acetone $+$ Chloroform

Answer

Correct option: B.
Ethanol $+$ Acetone
b
Hydrogen bond of ethanol gets weakened by addition of acetone.

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

At $25\,^oC$ , the molar conductivity at infinite dilution for electrolytes $KOH, KCl$ and $BaCl_2$ are $248 \times 10^{-4}, 126 \times 10^{-4}$ and $280 \times 10^{ -4}\,Sm^2\,mol^{-1}$ respectively calculate $\Lambda _m^\infty $ for $Ba(OH)_2$ (in $Sm^2\, mol^{-1}$ )
Match the column $(I)$ with column $(II)$ and mark the appropriate choice
   column $(I)$   column $(II)$ 
$(A)$ Kohlraush law $(i)$ $\Lambda _{eq}^o = \Lambda _c^o + \Lambda _a^o$
$(B)$ Molar
Conductivity
$(ii)$ $\Lambda _m = \frac{{K \times 1000}}{M}$
$(C)$ Degree of
Dissociation
$(iii)$ $\alpha  = {\Lambda _m}/\Lambda _m^o$
$(D)$ Dissociation
Constant
$(iv)$ ${k_a} = C{\alpha ^2}/1 - \alpha $
Match the compounds/ions in Column $I$ with their properties/reactions in Column $II$. Indicate your answer by darkening the appropriate bubbles of the $4 \times 4$ matrix given in the $ORS$.
Column $I$ Column $II$
$(A)$ $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}$ $(p)$ gives precipitate with $2, 4$-dinitrophenylhydrazine
$(B)$ $\mathrm{CH}_3 \mathrm{C} \equiv \mathrm{CH}$ $(q)$ gives precipitate with $\mathrm{AgNO}_3$
$(C)$ $\mathrm{CN}^{-}$ $(r)$ is a nucleophile
$(D)$ $\mathrm{I}^{-}$ $(s)$ is involved in cyanohydrin formation
The rate of the reaction, $2NO + Cl_2 \rightarrow 2NOCl$ is given by the rate equation rate $= k[NO]^2[Cl_2].$ The value of the rate constant can be increased by
An organic compound $B$ is formed by the reaction of ethylmagnesium iodide  $(CH_3CH_2 MgI)$ with a substance $A,$ followed by treatment with dilute  aqueous acid. Compound $B$ does not react with $PCC$ in dichloromethane.  Identify $A$ ?
For the following reaction: $NO_2(g) + CO(g) \to NO(g) + CO_2(g)$, the rate law is: Rate $= k \,[NO_2]^2$. If $0.1\,mole$ of gaseous carbon monoxide is added at constant temperature to the reaction mixture which of the following statements is true?
In ${K_4}Fe{\left( {CN} \right)_6},$ $Fe$ is in the form of
Aryl halide is less reactive than alkyl halide towards nucleophilic substitution because:
Which of the following is not a use of benzoic acid?
The major product in the following reaction