241. Grain alcohol is common name of

1. 1. Amyl alcohol

   
   
   

   2. Ethyl alcohol

   
   
   

   3. Methanol

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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242. The alkanes have a general formula

1. 1. C_nH_2n

   
   
   

   2. C_nH_2n+4

   
   
   

   3. C_nH_2n-2

   
   
   

   4. C_nH_2n+2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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243. Alkynes have the general formula

1. 1. C_nH_2n

   
   
   

   2. C_nH_2n+2

   
   
   

   3. C_nH_2n-4

   
   
   

   4. C_nH_2n-2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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244. Which of the following compounds has been given an octane number of 100 ?

1. 1. n - Hexane

   
   
   

   2. Iso - octane

   
   
   

   3. Neo - pentane

   
   
   

   4. Neo - octane

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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245. Octane number is zero for

1. 1. Iso - heptane

   
   
   

   2. n - heptane

   
   
   

   3. Iso - octane

   
   
   

   4. n - octane

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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