261. Assertion (A) : To dilute sulphuric acid, acid is added to water and not water to acid
     Reason (R) : Specific heat of water is quite large
     Codes

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

   
   
   

   2. Both A and R are true but R is 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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262. Graphite is used in atomic piles

1. 1. As a lubricant

   
   
   

   2. As a fuel

   
   
   

   3. As an insulator

   
   
   

   4. As a moderator

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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263. The metal which weeps without tears is

1. 1. C

   
   
   

   2. Fe

   
   
   

   3. Sn

   
   
   

   4. Al

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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264. Two pungent smelling gases bleaches a certain substances. The gases may be

1. 1. CI₂ and NH₃

   
   
   

   2. CI₂ and SO₂

   
   
   

   3. NH₃ and PH₃

   
   
   

   4. CO₂ and O₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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265. Sea weeds are important source of

1. 1. F₂

   
   
   

   2. CI₂

   
   
   

   3. Br₂

   
   
   

   4. I₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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