106. The 3d transition series contains elements from atomic number

1. 1. 21 to 30

   
   
   

   2. 21 to 29

   
   
   

   3. 21 to 31

   
   
   

   4. 22 to 30

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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107. The matallic nature of transition elements is .......than that of alkali metals

1. 1. more

   
   
   

   2. same

   
   
   

   3. less

   
   
   

   4. none

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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108. Which of the following is formed when cadmium reacts with H₂S ?

1. 1. CdS

   
   
   

   2. CdS₂

   
   
   

   3. CdH

   
   
   

   4. Cd₂S

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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109. Consider the following elements
     1. cobalt
     2. phosphorous
     3. Zinc
     Which of the above elements are required for the maintaining healthy human body ?

1. 1. 1 and 2

   
   
   

   2. 2 and 3

   
   
   

   3. 1 and 3

   
   
   

   4. 1, 2 and 3

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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110. Which of the following alloys contains Cu and Zn ?

1. 1. Bell metal

   
   
   

   2. Aluminium bronze

   
   
   

   3. Brass

   
   
   

   4. Bronze

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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