21. Chloral is

1. 1. CCI₃CHO

   
   
   

   2. CCI₃CH₃

   
   
   

   3. CCI₃COCH₃

   
   
   

   4. CCI₃CH₂OH

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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22. The poisonous gas obtained by exposing chlorogorm to air and sunlight is

1. 1. CH₂CI₂

   
   
   

   2. COCI₂

   
   
   

   3. CH₂O

   
   
   

   4. CH₃CI

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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23. The compound with the highest boiling point is

1. 1. n - pentane

   
   
   

   2. 2 - methylbutane

   
   
   

   3. n - hexane

   
   
   

   4. 2, 2 - dimethylpropane

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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24. Liquid benzene (C₆H₆) burns in oxygen according to, 2C₆H₆ (l) + 15O₂ (g) → 12CO→ (g) + 6H→ O (g) How many litre of O→ at STP are needed to complete the combustion of 39 g of liquid benzene ?

1. 1. 11.2 litre

   
   
   

   2. 22.4 litre

   
   
   

   3. 84 litre

   
   
   

   4. 74 litre

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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25. A plastic bakelite is a compound of HCHO with

1. 1. Benzene

   
   
   

   2. Phenol

   
   
   

   3. Ammonia

   
   
   

   4. Hydrocarbon

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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