First ionisation potentials of nitrogen and oxygen in eV respectively are

• 14.5, 13.6

• 13.6, 14.5

• 13.6, 13.6

• 14.6, 14.6

232.

Arrange the following as per increasing, order of ionic size Mg²⁺, O^2-, Na⁺, F^-, N^3-

• N^3- < O^2- < F^-< Na⁺< Mg²⁺

• O^2- < F^-< N^3- < Mg²⁺ < Na⁺

• Na⁺< Mg²⁺ < O^2- < N^3- < F^-

• Mg²⁺ < Na⁺ < F^-< O^2-<N^3- 

The set of compounds in which the reactivity of halogen atom in the ascending order is

• vinyl chloride, chloroethane, chlorobenzene

• vinyl chloride, chlorobenzene, chloroethane

• chloroethane, chlorobenzene, vinyl chloride

• chlorobenzene, vinyl chloride, chloroethane

Pentavalence in phosphorous is more stable when compared to that of nitrogen even through they belong to same group is due to

• reactivity of phosphorous

• inert nature of nitrogen

• dissimilar electronic configuration

• larger size of phosphorous atom

Ferric sulphate on heating gives

• SO₂ and SO₃

• SO₂ only

• SO₃ only

• S

When AgNO₃ is heated to red hot, what is formed?

• Ag

• Ag₂O₃

• Ag₂O

• AgO₂

Match List-I with List-II and select the correct answer using the codes given below

Codes

• A  B  C  D

  4  3  1   2

• A  B  C  D

  2  1   3  4

• A  B  C  D

  4  3   2  1

• A   B  C  D

  3  4   1   2

Consider the following statements.

1.The aqueous solution of FeCl₃ is acidic in nature.

2. Anhyd. FeCl₃ can be obtained by heating hydrated ferric chloride.

3. A solution of ferric chloride on standing gives a brown precipitate.

The correct statement (s) is/are

• 1 and 2

• 2 and 3

• 1 and 3

• All of these

Mercurous ion (Hg${}_2^{2+}$) gives white precipitate on reacting with

• Kl solution

• H₂S gas

• K₂Cr₂O₇ solution

• HCl solution

In case of ring rest of NO${}_3^{-}$ ion, the complex formed has formula [Fe (H₂O)₅ NO]SO₄. The oxidation state of iron in the complex is

• +1

• +2

• +3

• +6