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A red brown gas is released on heating lead nitrate. Its example?
  1. Combination reaction
  2. Reduction reaction
  3. Decomposition reaction
  4. Oxidation reaction
Explanation

When heated, lead nitrate decomposes into lead monoxide and nitrogen dioxide,

The red-brown gas is nitrogen dioxide, a product of decomposition. 

A decomposition reaction is a chemical reaction where a single compound breaks down into two or more simpler compounds.

In this case, lead nitrate (Pb(NO3)2) breaks down into lead monoxide (PbO) and nitrogen dioxide (NO2) when heated. 

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  2. 30–60 minutes
  3. 2–4 hours
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  1. Vertical drop fall
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آکسیجن زیادہ تر عناصر کے ساتھ عمل کرکے دو عنصری مرکبات بناتی ہے جنہیں کیا کہتے ہیں؟
  1. Bases
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  3. Acids
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں

پانی اور کاربن ڈائی آکسائڈ کے سالمے مل کر کیا بناتے ہیں؟
  1. Nitric acid
  2. Carbonic acid
  3. Sulfuric acid
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