MCQ
Which of the following is coloured
- A$ScC{l_3}$
- B$Ti{O_2}$
- ✓$MnS{O_4}$
- D$ZnS{O_4}$
due to presence of unpaired electrons it will form coloured salt.
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$(R = 0.083 \,L\, bar \,mol^{-1}\, K{-1})$
$P : 10\ ml, 0.1\ M\ NaOH + 5\ ml, 0.1\ M\ HCl$
$Q : 10\ ml, 0.1\ M\ NaOH + 15\ ml, 0.1\ M\ CH_3COOH$
$R : 10\ ml, 0.1\ M\ NH_3 + 10\ ml, 0.1\ M\ NH_4Cl$
$S : 10\ ml, 0.05\ M\ NaF + 5\ ml, 0.1\ M\ HF$
Which of above solutions act as buffer