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d and f-Block Elements Test - 5
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    The following question has four choices, out of which ONLY ONE is correct.

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    Which of the following combinations in an aqueous medium will give a red colour or precipitate?

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    Which of the following rules should be obeyed while preparing the alloys?

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    Which of the following is the reason for stability of a Gd3+ion?

  • Question 4/4
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    Formulae of the compounds of lanthanoids are given below. Choose the one which is incorrect?

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