EASY
12th Maharashtra Board
IMPORTANT
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In which of the following series all the elements are radioactive in nature?

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Important Questions on Transition and Inner Transition Elements

MEDIUM
12th Maharashtra Board
IMPORTANT
Which of the following sets of ions contain only paramagnetic ions?
EASY
12th Maharashtra Board
IMPORTANT
Which actinoid, other than uranium occur in significant amount naturally?
MEDIUM
12th Maharashtra Board
IMPORTANT
The flux added during extraction of iron from haematite ore is
EASY
12th Maharashtra Board
IMPORTANT
What is the oxidation state of manganese in MnO42-?
EASY
12th Maharashtra Board
IMPORTANT
What is the oxidation state of manganese in MnO4-?
MEDIUM
12th Maharashtra Board
IMPORTANT
Give any four uses of KMnO4.
MEDIUM
12th Maharashtra Board
IMPORTANT
Why salts of Sc3+, Ti4+, V5+ are colourless?
MEDIUM
12th Maharashtra Board
IMPORTANT
Which steps are involved in the manufacture of potassium dichromate from chromite ore?