116. Which of the following alkaline earth metals has the highest ionic mobility in an aqueous solution ?

1. 1. Ba²⁺

   
   
   

   2. Mg²⁺

   
   
   

   3. Ca²⁺

   
   
   

   4. Be²⁺

   
   
   

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   NA

   Correct Option: A

   NA

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117. The compounds of alkaline earth metals possess which of the following magnetic nature ?

1. 1. Paramagnetic

   
   
   

   2. Diamagnetic

   
   
   

   3. Ferromagnetic

   
   
   

   4. Antiferromagnetic

   
   
   

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   NA

   Correct Option: B

   NA

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118. How many electrons are involved in the oxidation by KMnO₄ in basic medium ?

1. 1. 5

   
   
   

   2. 3

   
   
   

   3. 2

   
   
   

   4. 4

   
   
   

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   NA

   Correct Option: D

   NA

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119. Asbestos is silicate mineral of calcium and

1. 1. K

   
   
   

   2. Al

   
   
   

   3. Ba

   
   
   

   4. Mg

   
   
   

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   NA

   Correct Option: D

   NA

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120. Ferrosilicon is used the steel industry as

1. 1. Cutting tool

   
   
   

   2. Flux

   
   
   

   3. A reducing agent

   
   
   

   4. Alloyint agent

   
   
   

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   NA

   Correct Option: D

   NA

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