CBSE
Multiple Choice QuestionsKMnO4 can be prepared from K2MnO4 as per reaction
The reaction can go to completion by removing OH- ions by adding
HCl
KOH
CO2
SO2
Which of the following is a Lewis base ?
NaOH
NH3
BCl3
All of these
Conjugate base for BrÖnsted acids H2O and HF are :
H3O+ and F-, respectively
OH- and F-, respectively
H3O+ and H2F+, respectively
OH- and H2F+, respectively
Which of the following dissolves in hot conc. NaOH solution?
Fe
Zn
Cn
Ag
pH of a saturated solution of Ca(OH)2 is 9. The solubility product(Ksp) of Ca(OH)2 is:
0.25 × 10-10
0.5 × 10-15
0.125 × 10-15
0.5 × 10-10
Which will make basic buffer?
100mL of 0.1 M CH3COOH + 100mL of 0.1M NaOh
100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OH
100 mL of 0.1 M HCl + 100 mL of 0.1 M NaOH
50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOH
At 900C , pure water has [H+]=10-6 M , if 100 mL of 0.2 M HCl is added to 200mL of 0.1 M KOH at 90°C then pH of the resulting solution will be:
5
6
7
4
