41. Which one is not the isotopes of hydrogen ?

1. 1. Protium

   
   
   

   2. Eritium

   
   
   

   3. Deuterium

   
   
   

   4. Tritium

   
   
   

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   NA

   Correct Option: B

   NA

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42. In ³⁵CI₃₄ and ³⁷CI₁₇ which of the following is false ?

1. 1. Both have 17 protons

   
   
   

   2. Both have 17 electrons

   
   
   

   3. Both have 18 neutrons

   
   
   

   4. Both show same chemical properties

   
   
   

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   NA

   Correct Option: C

   NA

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43. The isotone of ⁷⁶Ge₃₂ is

1. 1. ⁷⁷Ge₁₇

   
   
   

   2. ⁷⁸As₃₃

   
   
   

   3. ⁷⁷Se₃₄

   
   
   

   4. ⁷⁸Se₃₄

   
   
   

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   NA

   Correct Option: D

   NA

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44. Wavelength of which of the following colors of the visible spectrum of light are maximally absorbed by green plants

1. 1. green and yellow

   
   
   

   2. red and blue

   
   
   

   3. green and red

   
   
   

   4. blue and yellow

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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45. Which of the following is not electromagnetic in nature

1. 1. Cathode rays

   
   
   

   2. x - rays

   
   
   

   3. y - rays

   
   
   

   4. Infrared - rays

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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