Which of the following acts both s a reducing and an oxidizing agent?
H2
SO2
H2S
C
Correct answer is B
SO2 = i.e
In H2SO2 act as oxidizing agent
H2S + SO2 → 3S + 2H2O
Whereas in water SO2 acts as reducing agents H2O + SO2 H2SO23
Which of the following substances is a basic salt?
Na2CO3
Mg(OH)CI
NaHCO3
KSO4.AI2(SO4)3,24H2O
Correct answer is B
No explanation has been provided for this answer.
What volume of a 0.1 M H3PO4 will be required to neutralize 45.0 cm3 of a 0.2 M NaOH?
10.0 cm3
20.0 cm3
27.0 cm3
30.0 cm3
Correct answer is D
No explanation has been provided for this answer.
Which of the following in aqueous solution is neutral to litmus?
NH4CI
NaCO3
FeCl3
NaCl
Correct answer is D
No explanation has been provided for this answer.
Which of the following dilute solutions has the lowest pH value?
Calcium trioxocarbonate (IV)
Sodium trioxocarbonate (IV)
Hydrochloric acid
Ethanoic acid
Correct answer is C
No explanation has been provided for this answer.