Question : When Lead nitrate is heated, which of the following gases is produced?
Option 1: Nitrogen oxide
Option 2: Lead dioxide
Option 3: Nitrogen dioxide
Option 4: Lead oxide
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Correct Answer: Nitrogen dioxide
Solution : The correct option is Nitrogen dioxide.
When Lead Nitrate (Pb(NO3)2) is heated, it undergoes thermal decomposition. The reaction can be represented as: Pb(NO3)2(s) → PbO(s) + NO2(g) + O2(g)
When Lead Nitrate (Pb(NO3)2) is heated, it decomposes to form Nitrogen dioxide (NO2), oxygen (O2) and Lead oxide (PbO). So, the gas produced in this reaction is Nitrogen dioxide (NO2).
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Question : Which of the following groups of gases contribute to the "Green House Effect"?
Option 1: Carbon dioxide and Methane
Option 2: Ammonia and Ozone
Option 3: Carbon monoxide and Sulphur dioxide
Option 4: Carbon tetrafluoride and Nitrous oxide
Question : Which of the following molecules or ions involved in the nitrogen cycle do not contain oxygen atoms?
Option 1: Nitrite
Option 2: Ammonia
Option 3: Nitrate
Option 4: Laughing gas
Question : Dry ice is the solid form of:
Option 1: Air
Option 2: Carbon Dioxide
Option 3: Nitrogen
Option 4: Water
Question : The gas produced in marshy places due to decomposition of vegetation is
Option 1: Carbon monoxide
Option 2: Carbon dioxide
Option 3: Sulphur dioxide
Option 4: Methane
Question : Philosopher's wool is chemically
Option 1: Aluminium oxide
Option 2: Magnesium oxide
Option 3: Zinc oxide
Option 4: Calcium oxide
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