186. Leas dioxide is formed by

1. 1. PbO + KCIO₃

   
   
   

   2. PbO₂ + NaOH

   
   
   

   3. PbO + O₂

   
   
   

   4. Pb + O₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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187. Sugar of lead is

1. 1. PbCI₂

   
   
   

   2. PbSO₄

   
   
   

   3. Pb(CH₃COO)₂

   
   
   

   4. PbCO₃

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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188. Which is known as oil of victriol ?

1. 1. H₂SO₃

   
   
   

   2. H₂SO₄

   
   
   

   3. H₂SO₅

   
   
   

   4. H₂S₂O₈

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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189. Which one is Caro's acid ?

1. 1. H₂SO₅

   
   
   

   2. H₂S₂O₈

   
   
   

   3. H₂SO₃

   
   
   

   4. H₂SO₄

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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190. The acid employed for etching of glass is

1. 1. H₂SO₄

   
   
   

   2. HCIO₄

   
   
   

   3. HF

   
   
   

   4. Aqua-regia

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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