iodide is oxidized
tetraoxosulphate (Vl) acid acts as an oxidizing agent
starch has been oxidized
K2Cr2O7 is oxidized
Correct answer is C
No explanation has been provided for this answer.
Cu2+ + 2e- → Cu(s)
2Cl- -2e → Cl2
Cu(s) -2e → Cu2+(aq)
Cu2+(aq) + 2Cl-(aq) → CuCl2(aq)
Correct answer is A
No explanation has been provided for this answer.
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.