291. The highest oxidation state is shown by

1. 1. Ti

   
   
   

   2. Cr

   
   
   

   3. V

   
   
   

   4. Sc

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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292. Which of the following is produced when concentrated cinnabar is roasted in the excess of air ?

1. 1. Hg

   
   
   

   2. Fe

   
   
   

   3. Zn

   
   
   

   4. Al

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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293. The nature of aqueous solution of FeCl₃ is

1. 1. Neutral

   
   
   

   2. Basic

   
   
   

   3. Amphoteric

   
   
   

   4. Acidic

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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294. Strontium burns in oxygen to form

1. 1. Sr₂O

   
   
   

   2. Sr₂O₂

   
   
   

   3. SrO

   
   
   

   4. SrO₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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295. The mixture of MgCl₂ and MgO is called

1. 1. Pseudo alum

   
   
   

   2. Sorel's cement

   
   
   

   3. Portland cement

   
   
   

   4. Alum

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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