Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2016)

done JEE Main Paper (Held On 10 April 2016) Total Questions - 2

• question_answer1) The transition metal ions responsible for color in ruby and emerald are, respectively :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  \[\text{C}{{\text{r}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{r}}^{\text{3+}}}\]
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  B)
  \[\text{C}{{\text{o}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{o}}^{\text{3+}}}\]
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  C)
  \[\text{C}{{\text{o}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{r}}^{\text{3+}}}\]         
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  D)
  \[\text{C}{{\text{r}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{o}}^{\text{3+}}}\]
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• question_answer2) Identify the correct statement:   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Corrosion of iron can be minimized by forming an impermeable barrier at its surface.
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  B)
  Iron corrodes in oxygen-free water.
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  C)
  Iron corrodes more rapidly in salt water because its electrochemical potential is higher.
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  D)
  Corrosion of iron can be minimized by forming a contact with another metal with a higher reduction potential.
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