Stoichiometry and Redox Reactions Test

Result

Stoichiometry and Redox Reactions Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

1 Mol of H₂SO₄ will completely neutralise

A
2 mol of Ca(OH)₂

B
0.5 mol of Ba(OH)₂

C
2 moles of ammonia

D
Both (3) and (1)

Solution

This option is correct because

Gram equivalents of H₂SO₄ = n x 2 = 1 x 2 = 2

Since NH₃ is a monoacidic base, the N-factor in acid -base titrations is 1

Gram equivalents of NH₃= 1 x 2 = 2.

Hence, they will completely neutralise .
Question 2
1 / -0

The oxidation number of oxygen is positive in

A
H₂O₂

B
Na₂O₂

C
OF₂

D
H₂O

Solution

In OF₂, the oxidation number of O is
x + 2(-1) = 0
x = +2

Oxygen is the most electronegative element in the periodic table, second only to fluorine. Hence, it can have a positive oxidation state only in the compounds with fluorine.
Question 3
1 / -0

In which of the following compounds does the carbon atom have zero oxidation state?

A
CH₄

B
CHCl₃

C
CH₂Cl₂

D
CCl₄

Solution

In CH₂Cl_2, carbon is in 0 oxidation state.