1. What is the number of P atoms in one mole of P₄

1. 1. 1.504 x 10²³

   
   
   

   2. 6.023 x 10²³

   
   
   

   3. 1.209 x 10²⁴

   
   
   

   4. 2.409 x 10²⁴

   
   
   

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   NA

   Correct Option: D

   NA

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2. Which of the following is a mixture ?

1. 1. Distilled water

   
   
   

   2. Gasoline

   
   
   

   3. Liquified petroleum

   
   
   

   4. Both (b), (c)

   
   
   

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   NA

   Correct Option: D

   NA

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3. How many electrons are there in Na⁺

1. 1. 1

   
   
   

   2. 10

   
   
   

   3. 11

   
   
   

   4. 12

   
   
   

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   NA

   Correct Option: B

   NA

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4. Which one of the following substance does not have a melting point?

1. 1. bromine

   
   
   

   2. sodium chloride

   
   
   

   3. mercury

   
   
   

   4. glass

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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5. Which one among the following is the heaviest ?

1. 1. 1 mole of water molecules

   
   
   

   2. 1 mole of ammonia molecules

   
   
   

   3. 1 mole of sodium atoms

   
   
   

   4. 1 mole of hydrogen molecules

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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