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Q. |
Which of the following substances undergoes chemical change on heating? |
A. | Sodium chloride |
B. | Silica |
C. | Lead nitrate |
D. | Platinum wire |
Answer» C. Lead nitrate | |
Explanation: Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas. |
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