MCQ
The strongest of the four acids listed below is
- A$HCOOH$
- B$C{H_3}COOH$
- C$ClC{H_2}COOH$
- ✓$FC{H_2}COOH$
✓
Answer
Correct option: D.
$FC{H_2}COOH$
(d)Smaller the $_p{K_a}$ value, strong the acid.
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 statement is true
The concentrated sulphuric acid that is peddled commercial is $95\%\,\,H_2SO_4$ by weight . If the density of this commercial acid is $1.834\,g\,cm^{-3},$ the molarity of this solution is ........... $\mathrm{M}$
→Match List $I$ w1th List $II$
→|
LIST $I$ (Precipitating reagent and conditions) |
LIST $II$ (Cation) |
| $A$ $\mathrm{NH}_4 \mathrm{Cl}+\mathrm{NH}_4 \mathrm{OH}$ | $I$ $\mathrm{Mn}^{2+}$ |
| $B$ $\mathrm{NH}_4 \mathrm{OH}+\mathrm{Na}_2 \mathrm{CO}_3$ | $II$ $\mathrm{Pb}^{2+}$ |
| $C$ $\mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl}+\mathrm{H}_2 \mathrm{~S}$ gas | $III$ $\mathrm{Al}^{3+}$ |
| $D$ dilute $\mathrm{HCl}$ | $IV$ $\mathrm{Sr}^{2+}$ |
Choose the correct answer from the options given below:
In the equilibrium reaction
→$AgCl(s) + 2N{H_3}(aq.) \rightleftharpoons Ag{(N{H_3})_2}^ + (aq) + C{l^ - }(aq.)$
Increase in the concentration of $Cl^-(aq.)$ causes
Which of the following cobalt $(III)$ complex is paramagnetic and high spin complex
→Which molecule $AX_3$, $AX_4$, $AX_5$, $AX_6$ is most likely to have a trigonal bipyramidal structure if $A$ has no lone pair ?
→The entropy change, in the conversion of one mole of liquid water at $373 \,K$ to vapour at the same temperature is (Latent heat of vaporization of water, $\Delta {H_{vap}} = 2.257\,kJ/g)$ ........$J\,{k^{ - 1}}$
→The $pH$ of an aqueous solution containing $[{H^ + }] = 3 \times {10^{ - 3}}M$ is
→$(A)$ and $(B)$ are isomer : Identify $(B)$
→Choose the correct tests with respective observations.
(A) $CuSO _4$ (acidified with acetic acid) + $K _4\left[ Fe ( CN )_6\right] \rightarrow$ Chocolate brown precipitate.
(B) $FeCl _3+ K _4\left[ Fe ( CN )_6\right] \rightarrow$ Prussian blue precipitate.
(C) $ZnCl _2+ K _4\left[ Fe ( CN )_6\right]$, neutralised with $NH _4 OH$ $\rightarrow$ White or bluish white precipitate.
(D) $MgCl _2+ K _4\left[ Fe ( CN )_6\right] \rightarrow$ Blue precipitate.
(E) $BaCl _2+ K _4\left[ Fe ( CN )_6\right]$, neutralised with NaOH $\rightarrow$ White precipitate.
Choose the correct answer from the options given below:
→(A) $CuSO _4$ (acidified with acetic acid) + $K _4\left[ Fe ( CN )_6\right] \rightarrow$ Chocolate brown precipitate.
(B) $FeCl _3+ K _4\left[ Fe ( CN )_6\right] \rightarrow$ Prussian blue precipitate.
(C) $ZnCl _2+ K _4\left[ Fe ( CN )_6\right]$, neutralised with $NH _4 OH$ $\rightarrow$ White or bluish white precipitate.
(D) $MgCl _2+ K _4\left[ Fe ( CN )_6\right] \rightarrow$ Blue precipitate.
(E) $BaCl _2+ K _4\left[ Fe ( CN )_6\right]$, neutralised with NaOH $\rightarrow$ White precipitate.
Choose the correct answer from the options given below: