Which is the correct statement for the given acids?

1.	Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid
2.	Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid
3.	Both are triprotic acids
4.	Both are diprotic acids

Which of the statements given below is incorrect?

1. \(\mathrm{C l_{2} O_{7  }}\)${}_{}$is an anhydride of perchloric acid
2. \(\mathrm{O_{3}}\)${\mathrm{}}_{}$ molecule is bent
3. ONF is isoelectronic with \(\mathrm{N O_{2}^{-}}\)${}_{}^{}$ 
4. \(\mathrm{O F_{2}}\) is an oxide of fluorine

The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl. 
The higher boiling point of hydrogen fluoride is explained as:

The strong reducing behaviour of H₃PO₂ is due to:

1. Presence of one -OH group and two P-H bonds.

2. High electron gain enthalpy of phosphorus.

3. High oxidation state of phosphorus.

4. Presence of two -OH groups and one P-H bond.

The acidity of diprotic acids in aqueous solution increases in the order:

1. H₂S < H₂Se < H₂Te

2. H₂Se < H₂S < H₂Te

3. H₂Te < H₂S < H₂Se

4. H₂Se < H₂Te < H₂S

Which of the following compounds does not release oxygen when heated?

1. Zn(ClO₃)₂
2. K₂Cr₂O₇
3. (NH₄)₂Cr₂O₇
4. KClO₃

The incorrect statement regarding oxoacids of phosphorus is:

Oxidation states of P in H₄P₂O₅, H₄P₂O₆, H₄P₂O₇, are respectively:

Among the following which is the strongest oxidising agent?

1. $F_2$

2. $B{r}_2$

3. $l_2$

4. $C{l}_2$

The correct thermal stability order for \(\mathrm{{H}_2 {E}},\)  \(\mathrm{{ E}= {O}, {S}, {Se}, {Te}} \text { and } \mathrm{Po}\)  among the following is:
1. \(\mathrm{{H}_2 {Se}<{H}_2 {Te}<{H}_2 {Po}<{H}_2 {O}<{H}_2 S}\)
2. \(\mathrm{{H}_2 {~S}<{H}_2 {O}<{H}_2 {Se}<{H}_2 {Te}<{H}_2 {Po}}\)
3. \(\mathrm{{H}_2 {O}<{H}_2 {~S}<{H}_2 {Se}<{H}_2 {Te}<{H}_2 {PO}}\)
4. \(\mathrm{{H}_2 {Po}<{H}_2 {Te}<{H}_2 {Se}<{H}_2 {~S}<{H}_2 {O}}\)