Choose the most appropriate amewer from the following list of oxides which fit the description. Each answer may be used only once :
$S O_{2}, S i O_{2}, C O, A l_{2} O_{3}, M g O, N a_{2} O$
An oxide which dissolves in water forming an acid.

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Solution

Acidic oxides dissolve in water from acids.
In the given list Sulphur dioxide ( $S O_{2}$ ) is an acidic oxide.
It dissolves in water to form an acid.
The reaction is, $\underset{S u l f u r d i o x i d e}{S O_{2} (g)} + H_{2} O (l) \to \underset{S u l f u r o u s a c i d}{H_{2} S O_{3} (l)}$

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(a) What are amphoteric oxides? Give two examples of amphoteric oxides.
(b) Choose the acidic oxides, basic oxides and neutral oxides from the following:
$N a_{2} O : C O_{2}; C O; S O_{2}; M g O; N_{2} O; H_{2} O .$
(c) Which of the following are amphoteric oxides:
$M g O, Z n O, P_{2} O_{3}, A l_{2} O_{3}, N O_{2}$

Choose the most appropriate answer from the following list of oxides which fit the descriptions. Each answer may be used only once:

[S O_{2}, S i O_{2}, A l_{2} O_{3}, M g O, C O, N a_{2} O]

(i) A basic oxide
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide
(iv) A covalent oxide of a metalload.

(b) Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once.

$[{SO}_{2}, {SiO}_{2}, {Al}_{2} O_{3}, MgO, CO, {Na}_{2} O]$ .
(i) A basic oxide.
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide.
(iv) A covalent oxide of a metalloid.

Choose the most appropriate answer from the following list of oxides that fit the description. Each answer may be used only once :

$S O_{2}, S i O_{2}, C O, M g O, N a_{2} O, A l_{2} O_{3}$

An amphoteric oxide.

Q. Choose the most appropriate answer from ( SO2 , SiO2 , Al2O3 , CO , MgO , Na2O )(a) A covalent oxide of a metalloid. (b) An oxide which when dissolved us water form acid . (c) A basic oxide (d) An amphoteric oxide

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Choose the most appropriate amewer from the following list of oxides which fit the description. Each answer may be used only once :SO2,SiO2,CO,Al2O3,MgO,Na2OAn oxide which dissolves in water forming an acid.

Acidic oxides dissolve in water from acids.In the given list Sulphur dioxide (SO2) is an acidic oxide.It dissolves in water to form an acid.The reaction is,SO2(g)Sulfurdioxide+H2O(l)→H2SO3(l)Sulfurousacid

Choose the most appropriate amewer from the following list of oxides which fit the description. Each answer may be used only once :
$S O_{2}, S i O_{2}, C O, A l_{2} O_{3}, M g O, N a_{2} O$
An oxide which dissolves in water forming an acid.

Acidic oxides dissolve in water from acids.
In the given list Sulphur dioxide ( $S O_{2}$ ) is an acidic oxide.
It dissolves in water to form an acid.
The reaction is, $\underset{S u l f u r d i o x i d e}{S O_{2} (g)} + H_{2} O (l) \to \underset{S u l f u r o u s a c i d}{H_{2} S O_{3} (l)}$