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In the above image, an experiment is performed where 3 g of lead nitrate powder is heated in a boiling tube over the flame. We observe fumes of some gas and some solid compound is percipitated at bottom of the boiling tube.1. What is the colour of the fumes formed?(i) Brown(ii) Red(iii) Yellow(iv) White2. What is the colour of the solid compound percipitated at bottom of the boiling tube?(i) Brown(ii) Red(iii) Yellow(iv) White3. What is the chemical formula of the gas whose fumes are formed ?(i) No(ii) N2O2(iii) N2O(iv) NO24. What is the chemical formula of the compound percipitated at the bottom of the boiling tube?(i) PbO2(ii) PbO(iii) Pb2O2(iv) Pb2O5. What is the type of the chemical reaction happening in the above experiment?(i) Thermal decomposition(ii) Combination(iii) Displacement(iv) Redox |
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Answer» 1. (i) Brown 2. (iii) Yellow 3. (iv) NO2 4. (ii) PbO 5. (iv) Redox |
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