Name few metal oxides which on heating immediately give metal and oxygen.Name few nonmetal oxides which on heating immediately give nonmetal and oxygen.

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Solution

$M e t a l o x i d e s t o m e t a l a n d o x y g e n 2 A l_{2} O_{3} \overset{∆}{\to} 4 A l + 3 O_{2} 2 C u O \overset{∆}{\to} 2 C u + O_{2} 2 H g O \overset{∆}{\to} 2 H g + O_{2} 2 A g_{2} O \overset{∆}{\to} 4 A g + O_{2} N o n m e t a l o x i d e s t o n o n m e t a l a n d o x y g e n . 2 H_{2} O \overset{∆}{\to} 2 H_{2} + O_{2} 2 S O_{3} \overset{∆}{\to} 2 S O_{2} + O_{2} 2 N_{2} O_{5} \overset{∆}{\to} 4 N O_{2} + O_{2} P_{4} O_{10} \overset{∆}{\to} 4 P + 5 O_{2}$

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Name :

(a) a nitrate of metal which on heating does not give nitrogen dioxide.

(b) a nitrate which on heating leaves no residue behind.

(d) a metal nitrate which on heating is changed into metal.

(e) a solution which absorbs nitric oxide.

(f) the oxide of nitrogen which turns brown on exposure to air. How is it prepared ?

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