Among the following, which one is a wrong statement?

(1) PH₅ and BiCl₅ do not exist

(2) ρp-dp bonds are present in SO₂

(3) SeF₄ and CH₄ have same shape

(4) ${\mathrm{I}}_3^{+}$ has bent geometry

What does heating copper with concentrated HNO₃ produce?

1. Cu(NO₃)₂ and NO       

2. Cu(NO₃)₂, NO and NO₂

3. Cu(NO₃)₂ and N₂O       

4. Cu(NO₃)₂ and NO₂

Which of the following statements about acids is true?

The product obtained as a result of a reaction of nitrogen with CaC₂ is:

1. CaCN         

2. CaCN₃

3. Ca₂CN       

4. CaCN₂

Hot concentrated sulphuric acid is a moderately strong oxidising agent. Which of the following reaction doe not show oxidising behaviour?

(a) Cu + 2H₂SO₄ $\to$CuSO₄ + SO₂ + 2H₂O

(b) 3S + 2H₂SO₄ $\to$3SO₂ + 2H₂O

(c) C + 2H₂SO₄ $\to$CO₂ + 2SO₂ + 2H₂O

(d) CaF₂ + H₂SO₄ $\to$CaSO₄ + 2HF

AlF₃ is soluble in HF only in presence of KF. It is due to the formation of
(1) K₃[AIF₃H₃]

(2) K₃[AIF₆]

(3) AlH₃

(4) K[AIF₃H]

In which pair of ions both the species contain S-S bond?

$$\begin{gathered} \left(\mathrm{a}\right) {\mathrm{S}}_2{\mathrm{O}}_7^{2-}, {\mathrm{S}}_2{\mathrm{O}}_3^{2-} \\ \left(\mathrm{b}\right) {\mathrm{S}}_4{\mathrm{O}}_6^{2-}, {\mathrm{S}}_2{\mathrm{O}}_3^{2-} \\ \left(\mathrm{c}\right) {\mathrm{S}}_2{\mathrm{O}}_7^{2-}, {\mathrm{S}}_2{\mathrm{O}}_8^{2-} \\ \left(\mathrm{d}\right) {\mathrm{S}}_4{\mathrm{O}}_6^{2-}, {\mathrm{S}}_2{\mathrm{O}}_7^{2-} \end{gathered}$$

Match the interhalogen compounds of Column I with the geometry in Column II and assign the correct code.

Column I             Column II
A. XX'                 (i) T-shape
B. XX'₃               (ii) Pentagonal bipyramidal
C. XX'₅               (iii) Linear
D. XX'₇                (iv) Square-pyramidal
                           (v) Tetrahedral

The correct match among the following is -
       A   B    C    D
1.   (iii) (iv) (i) (ii)

2.   (iii) (i) (iv) (ii)

3.   (v) (iv) (iii) (ii)

4.   (iv) (iii) (ii) (i)

Which of the following pairs of the compound is isostructural?

1. TeF₂, XeF₂

2. IBr₂^-, XeF₂

3. IF₃, XeF₂

4. BeCl₂, XeF₂