Assertion : $Xe{F}_6$ reacts with small quantity of water to form $XeO{F}_4$.

Reason : $Xe{F}_6$ reacts with glass and form $XeO{F}_4$.

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Which one of the following does not exist?

1. XeOF₄

2. NeF₂

3. XeF₂

4. XeF₆ 

The hybridisation of atomic orbitals of nitrogen in $N{O}_2^{+},N{O}_3^{-} and N{H}_4^{+}$ are 

(A) sp, sp³ and sp² respectively

(B) sp, sp² and sp³ respectively

(C) sp², sp and sp³ respectively

(D) sp², sp³ and sp respectively

Which of the following hydrides is most acidic

(1) H₂Te

(2) H₂Se

(3) H₂O

(4) H₂S

Which of the following statements about H₂SO₄ is false:

1. It can act as an oxidising agent with copper

2. It acts as a dehydrating agent with sugar

3. It acts as an acid in its reaction with BaO₂

4. It acts as a reducing agent in its reaction with Cu₂O

Which of the following oxide is most acidic

(1) Na₂O

(2) Al₂O₃

(3) P₂O₅

(4) SO₃

The least acidic oxide among the following is:

1. P₄O₆ 

2. P₄O₁₀ 

3. As₄O₆ 

4. As₄O₁₀ 

Which of the following polyhalide ion is most stable

1. $B{r}_3^{-}$ 

2. $I_3^{-}$ 

3. $C{l}_3^{-}$ 

4. $F_3^{-}$ 

A diamagnetic element burns in air to form a dioxide.This dioxide can reduce iodine to HI. When H₂ gas is bubbled through this element, it forms a hydride.It was found that the reaction of the dioxide and hydride of this element produces the same metal again.The element is

(1) S

(2) Si

(3) Te

(4) PO

Point out the incorrect statement among the following :

(1) The oxidation state of oxygen is +2 in OF₂.

(2) Acidic character follows the order H₂O < H₂S < H₂Se < H₂Te.

(3) The tendency to form multiple bonds increases in moving down the group from sulphur to tellurium (towards C and N)

(4) Sulphur has a strong tendency to catenate while oxygen shows this tendency to a limited extent.