306. The inert form of carbon is

1. 1. Graphite

   
   
   

   2. Coal

   
   
   

   3. Diamond

   
   
   

   4. Charcoal

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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307. The structure of quartz, mica and asbestos have the common basic unit of

1. 1. SrO₂

   
   
   

   2. [SiO₃]^2-

   
   
   

   3. [SiO₄]^2-

   
   
   

   4. [SiO₄]^4-

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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308. An electrician's solder is an alloy of

1. 1. Cu and Pb

   
   
   

   2. Zn and Cu

   
   
   

   3. Sn and Pb

   
   
   

   4. Fe and Zn

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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309. The hydrogen halide with the highest boiling point is

1. 1. HI

   
   
   

   2. HBr

   
   
   

   3. HCI

   
   
   

   4. HF

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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310. Anhydride of hypo chlorus acid is

1. 1. CI₂O

   
   
   

   2. CIO₂

   
   
   

   3. CI₂O₅

   
   
   

   4. CIO₃

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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