The d and f-Block Elements questions
808 published questions with worked solutions.
- A metallic oxide which imparts a purple colour to pottery is:
- Litharge is not commonly used in:
- A potter wishes to make a deep blue glaze. Which one of these available chemicals should be mixed?
- Electrons in a paramagnetic compound are [DCE 2003]
- Which one is diamagnetic?
- Which species is paramagnetic?
- How many of the following are diamagnetic? Fe, NaCl, O_2, C_6H_6, CrO_2, MnO, Co.
- Which type of metals form effective catalysts?
- Platinum is used as a catalyst in:
- When MnO_2 is fused with KOH (in presence of air), a coloured compound is formed. The compound and its colour are:
- When pyrolusite is fused with KOH in presence of air, the fused mass becomes:
- Which of the following pairs is obtained on heating ammonium dichromate? [WB-JEE 2008]
- Chromium dissolves in dil. H_2SO_4 to form [Cr(H_2O)_6]^ 2+ . The colour of this ion is:
- Molten sodium and molten sulphur are used as:
- Fremy's salt is:
- Transition metal ions show colour because
- When MnO_2 is fused with KOH, a coloured compound formed, the product and its colour is
- Which of the following electronic configuration represents the maximum magnetic moment?
- Which one of the following transition metal ions is diamagnetic?
- Which of the following pair of transition metal ions, have the same calculated values of magnetic moment?
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