31. The gas, which is used for welding purpose is ?

1. 1. CH₄

   
   
   

   2. C₂H₆

   
   
   

   3. C₂H₄

   
   
   

   4. C₂H₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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32. What is the name of the following alkyl group ? (CH₃)₂ CH

1. 1. Normal propyl

   
   
   

   2. Isopropyl

   
   
   

   3. Sec. propyl

   
   
   

   4. Tert. propyl

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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33. Assertion (A) : Phenyl is used as a household germicide.
    Reason (R) : Phenyl is phenol derivative and phenol is an effective germicide
    Codes

1. 1. Both A and R are true and R is the correct explanation of A

   
   
   

   2. Both A and R are true but R is not the correct explanation of A

   
   
   

   3. A is true but R is false

   
   
   

   4. A is false but R is true

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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34. 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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35. Alkanols are represented by

1. 1. C_nH_2n+1O

   
   
   

   2. C_nH_2nO

   
   
   

   3. C_nH_2nO₂

   
   
   

   4. C_nH_2n+2O

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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