MCQ
Which of the following is a buffer solution?
  • A
    $100\, ml\, 0.1\, M\, CH_3COOH + 100\, ml, 0.05\,M NaOH$
  • B
    $200\, ml\, 0.1\, M\, NH_4OH + 200\, ml, 0.08\,M HCl$
  • C
    $300\, ml\, 0.1\, M\, NaOH + 500\, ml, 0.1\,M C_6H_5COOH$
  • All of these

Answer

Correct option: D.
All of these
d

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

What is true for ${[Fe{(CN)_6}]^{3 - }}$ and ${[Fe{F_6}]^{3 - }}$
Product $(A)$ is
Solid $KClO_3$ is taken in a container maintained at constant pressure of $1\,atm$. Upon heating following equilibrium is obtained
$2KCl{O_3}\left( s \right){\text{ }} \rightleftharpoons \,\,2KCl\left( s \right){\text{ }} + {\text{ }}3{O_2}\left( g \right)$

If $\Delta H^o = 25\,kcal/mol$ and $\Delta S^o = 50\,cal/K,$ at what temperature equilibrium will be established in the container. (Ignore variation of $\Delta H^o$ and $\Delta S^o$ with temperature.).......$K$

$1$.  $KClO_3 \xrightarrow{\Delta } $

$2$.  $XeF_2 \xrightarrow{H_2O} $

$3$.  $XeF_4 \xrightarrow{H_2O} $

$4$. $PbO_2 \xrightarrow{\Delta } $

$5$. $XeF_6 \xrightarrow{H_2O} $

In how many of the above processes, $O_2$ will be one of the products

$108\; \mathrm{g}$ of silver (molar mass $108\; \mathrm{g}\; \mathrm{mol}^{-1}$ ) is deposited at cathode from $AgNO_3 (aq)$ solution by a certain quantity of electricity. The volume (in $L$) of oxygen gas produced at $273 \;\mathrm{K}$ and $1\; bar$ pressure from water by the same quantity of electricity is ............. $\mathrm{litre}$
Incorrect order of radius is
$KI\, + \,Mn{O_2}\, + {H_2}S{O_4}\, \to $ Vapours $(B)+$  other product

Vapours $(B)+$ $\xrightarrow{{{K_2}{S_2}{O_8}}}\,(C)\, + \,(D)$

$(D)\,\xrightarrow{{(B)}}$  Brown $(E)$

Hybridisation of central atom in $(E)$ is

The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about $9$. The spectral series are
Uncertainty in the position of an electron (mass $= 9.1 \times 10^{-31}\, kg$) moving with a velocity $300\, ms^{-1},$ accurate upto $0.001\%$ will be
With reference to protonic acids, which of the following statements is correct