Which one of the following is correct regarding the reaction of fluorine with water?

$2 F_{2} (g) + 2 H_{2} O (l) ⟶ 4 H^{+} (aq) + 4 F^{-} (aq) + O_{2} (g)$

50% studentsanswered this correctly

Important Questions on Redox Reactions

MEDIUM

NDA & NA EE

IMPORTANT

Oxygen has an oxidation state

+ 2

in:

MEDIUM

NDA & NA EE

IMPORTANT

The oxidation number of sulphur in perdisulphuric acid is:

MEDIUM

NDA & NA EE

IMPORTANT

Which of the following statement(s) is/are false for electrolytic cell?

MEDIUM

NDA & NA EE

IMPORTANT

Silverware turns black after some time due to _____.

MEDIUM

NDA & NA EE

IMPORTANT

Which of the following causes the rusting of iron?
I. Oxidation

II. Reduction
III. Chemical reaction with oxygen.
IV. Chemical reaction with ${CO}_{2}$ .
Select the correct answer from the codes given below.

MEDIUM

NDA & NA EE

IMPORTANT

Match the terms of Column $I$ and Column $II$ and choose the correct option from the codes given below.

	Column $I$		Column $II$
A.	Leclanche cell	1.	Cell reaction $2 H_{2} + O_{2} \to 2 H_{2} O$
B.	$Ni - Cd$ cell	2.	Does not involve any ion in solution and is used in hearing aids.
C.	Fuel cell	3.	Rechargeable
D.	Mercury cell	4.	Reaction at anode $Zn \to {Zn}^{2 +} + 2 e^{-}$
		5.	Converts energy of combustion into electrical energy

MEDIUM

NDA & NA EE

IMPORTANT

Match List $I$ and List $II$ and select the correct answer by using the codes given below the lists.

	List $I$ (The atom for which the oxidation state is to the found)		List $II$ (Oxidation state)
A.	Oxygen in ${BaO}_{2}$	1.	$- 1$
B.	Sulphur in $S_{2} O_{6}^{2 -}$	2.	$0$
C.	Carbon in $C_{12} H_{22} O_{11}$	3.	$+ 7$
D.	Manganese in ${MnO}_{4}^{-}$	4.	$- 2$
		5.	+ $5$