71. Which of the following substance is used as antiknock compound ?

1. 1. TEL

   
   
   

   2. Lead terachloride

   
   
   

   3. Lead acetate

   
   
   

   4. C₂H₅PbCI

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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72. Which is the correct formula of bleaching powder ?

1. 1. Ca(OCI)CI

   
   
   

   2. CaO(OCI)

   
   
   

   3. Ca(OCI)₂

   
   
   

   4. Ca(OCI)₂CI

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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73. Chloropicrin is

1. 1. Picric derivative

   
   
   

   2. Nitrochloroform

   
   
   

   3. Nitromethane

   
   
   

   4. Nitroethyl chloride

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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74. Lassaigne's test is used for the detection of

1. 1. Carbon only

   
   
   

   2. Hydrogen only

   
   
   

   3. Oxygen only

   
   
   

   4. Nitrogen, sulphur and halogens

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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75. Wine contains

1. 1. CH₃OH

   
   
   

   2. C₂H₅OH

   
   
   

   3. C₆H₅OH

   
   
   

   4. Glucose

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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