Nature of Oxides

Q.

Which is larger Peroxide or Superoxide?

Q.

Write the chemical formula for the covalent compound dichlorine heptoxide and mention its molecular weight in brackets after the formula.

Q. Suboxides are a class of oxides wherein the electropositive element is in excess relative to the “normal” oxides - True or False?

1. True
2. False

Q. Ions of element X forms a nitride with the chemical formula $X_3{N}_2$.

What is the valency of X?

1. 5
2. 1
3. 3
4. 2

Q. Which of the following is the anion corresponding to Super oxides?

1. All of the above
2. 
3. 
4. 

Q. Which of the following is a molecule of a compound?

1. ${\text{O}}_3$
2. ${\text{N}}_2$
3. ${\text{P}}_4$
4. ${\text{SO}}_2$

Q. An element X has valency 1.

(i) Write the chemical formula of its phosphide.
(ii) Is element X a metal or a non-metal?
[2 Marks]

Q. Give the names and formulae of the two substances in each case (a) Hydrated substance.

Q.

Why is ZnO an amphoteric oxide?

Q. Which of the following options are true regarding metallic and non-metallic oxides?

1. Nonmetallic oxides are basic in nature
2. Metallic oxides are acidic in nature
3. Nonmetallic oxides are acidic in nature
4. Metallic oxides are basic in nature

Q. Oxides which combine with water to form acids are called __ oxides.

Q. Which of the following is true for Super oxides?

1. They are also called hyperoxide
2. Chemical formula of anion is
3. Both (A) and (B)
4. None of these