171. The optimum temperature for carrying out fermentation of molasses is

1. 1. O^°C

   
   
   

   2. 30^°C

   
   
   

   3. 60^°C

   
   
   

   4. 100^°C

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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172. A fruity smell is obtained by the reaction of ethanol with

1. 1. CH₃CICH₃

   
   
   

   2. PCI₅

   
   
   

   3. CH₃COOH

   
   
   

   4. CH₃CHO

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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173. Rectified spirit can be dried with

1. 1. Conc. H₂SO₄

   
   
   

   2. CaO

   
   
   

   3. Anhydrous CaCI₂

   
   
   

   4. Slaked lime

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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174. Power alcohol is

1. 1. Absolute alcohol + Methyl alcohol

   
   
   

   2. Absoluted alcohol + Petrol

   
   
   

   3. Rectified alcohol + Petrol

   
   
   

   4. Denatured alcohol + Petrol

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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175. Which of the following compounds caused tragedy of Bhopal in 1984 ?

1. 1. Phosphene

   
   
   

   2. Methyl isocynate

   
   
   

   3. Carbon monoxide

   
   
   

   4. Methyl cyanate

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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