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MHT-CET Transition and Inner Transition Elements — practice questions — page 2

Explore 68 free Transition and Inner Transition Elements questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Transition and Inner Transition Elements questions and exercises with answers

Showing questions 31–60 of 68.

Which catalyst is used in the Haber process for ammonia?Read the answer and worked solution →Finely divided nickel is used to hydrogenateRead the answer and worked solution →Which compound catalyses the decomposition of hydrogen peroxide?Read the answer and worked solution →Compared with the parent metal, interstitial compounds haveRead the answer and worked solution →Potassium manganate K2MnO4 has which colour?Read the answer and worked solution →Manganese dioxide is fused with KOH and which oxidising agent to make K2MnO4?Read the answer and worked solution →In neutral or acidic medium, green manganate undergoesRead the answer and worked solution →In weakly alkaline medium, permanganate oxidises iodide toRead the answer and worked solution →Acidified K2Cr2O7 oxidises iodide ions toRead the answer and worked solution →Passing H2S through acidified dichromate gives a precipitate ofRead the answer and worked solution →The chief ore used to make potassium dichromate isRead the answer and worked solution →Adding KCl to concentrated sodium dichromate precipitatesRead the answer and worked solution →KMnO4 is used in the laboratory as aRead the answer and worked solution →Which d block elements are biologically important metals?Read the answer and worked solution →Compared with first-row elements, the heavier d block elementsRead the answer and worked solution →Commercial extraction of metals from their ores is calledRead the answer and worked solution →Impurities mixed with an ore are termedRead the answer and worked solution →Heating a concentrated ore in a current of air is calledRead the answer and worked solution →Reduction of iron ore with coke and limestone is carried out in aRead the answer and worked solution →The f block elements are called inner transition elements because their f orbitalsRead the answer and worked solution →Lanthanoids involve gradual filling of which orbitals?Read the answer and worked solution →How many elements fill the f orbitals in each inner transition series?Read the answer and worked solution →Lanthanoids span which atomic numbers?Read the answer and worked solution →Lanthanoids were called rare earth elements becauseRead the answer and worked solution →Separation of lanthanoids became easier throughRead the answer and worked solution →The most common oxidation state of lanthanoids isRead the answer and worked solution →Which lanthanoid forms a stable +4 species?Read the answer and worked solution →Which pair forms the most stable dipositive lanthanoid ions?Read the answer and worked solution →The steady decrease in ionic radii from La to Lu is calledRead the answer and worked solution →Which lanthanoid is radioactive?Read the answer and worked solution →

Worked practice questions

Which catalyst is used in the Haber process for ammonia?

  1. Finely divided nickel
  2. Platinised asbestos
  3. Manganese dioxide
  4. Iron with promoters
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Correct answer: D. Iron with promoters

Iron, with promoters, catalyses the combination of nitrogen and hydrogen to ammonia.

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Finely divided nickel is used to hydrogenate

  1. inert noble gas atoms
  2. water and brine only
  3. alkenes and vegetable oils
  4. common salt solutions
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Correct answer: C. alkenes and vegetable oils

Nickel catalyses addition of hydrogen to double bonds, turning inedible oils into solid fat for margarine.

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Which compound catalyses the decomposition of hydrogen peroxide?

  1. KOH
  2. NaCl
  3. CaO
  4. MnO2
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Correct answer: D. MnO2

Manganese dioxide speeds up the decomposition of hydrogen peroxide and of potassium chlorate.

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More Chemistry topics

ElectrochemistrySolutionsCoordination CompoundsChemical KineticsChemical Bonding and Molecular StructureAldehydes, Ketones and Carboxylic AcidsHydrocarbonsStructure of Atom