191. The metal used in incandescent lamps is

1. 1. Mo

   
   
   

   2. Pt

   
   
   

   3. W

   
   
   

   4. Cr

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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192. the paramagnetic character of the metals is due to

1. 1. Completely filled orbitals

   
   
   

   2. Unpaired electrons

   
   
   

   3. Variable valency

   
   
   

   4. Low melting and boiling point

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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193. The best conductor of electricity is

1. 1. Ag

   
   
   

   2. Au

   
   
   

   3. Al

   
   
   

   4. Hg

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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194. MnO^-₄ on reduction in acid medium forms

1. 1. MnO₂

   
   
   

   2. MnO^-₄

   
   
   

   3. Mn

   
   
   

   4. Mn⁺⁺

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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195. The molecular formula of chromyl chloride is

1. 1. CrO₂Cl₂

   
   
   

   2. CrOCl₂

   
   
   

   3. CrCl₃

   
   
   

   4. CrCl₅

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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