19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The value of magnetic moment ( spin only) for Cu2+ in CuSO4.5H2O is
Which of the following statements is incorrect for CrO3 ? (a)It is a bright orange solid.
Deep red-yellow vapour of CrO2Cl2 is passed into an aqueous solution of NaOH. The solution turns
Which of the following oxides of manganese is amphoteric ?
Which of the following oxides of manganese is stable as well as strongly acidic ?
HgCl reacts with mercury in an iron vessel to form mercurous chloride. HgCl + Hg Hg Cl Δ -> 2. Mercurous chloride can also be prepared by the reduction of mercury chloride by tin. 2+ 2HgCl + SnCl Hg Cl SnCl ->
Acidified potassium permanganate solution is decolourised by (AFMC 2007)
Reason of passivity of iron is (RPMT 2007)
What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and Ti2+? (AFMC 2008)
Which of the following group of transition metals is called coinage metals? (RPMT 2008)
Identify the alloy containing a non-metal as a constituent in it. (AIPMT-2012)
The catalytic activity of transition metals and their compounds is ascribed mainly to (Mains 2012)
Sc (Z = 21) is a transition element but Zn (Z = 30) is not because (NEET 2013)
Which of the following processes does not involve oxidation of iron? (NEET 2015)
The electronic configurations of Eu (Atomic No. 63), Gd (Atomic No. 64) and Tb (Atomic No. 65) are (NEET-I 2016)
Name the gas that can readily decolourise acidified KMnO4 solution. (NEET 2017)
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code (NEET 2018) Column I Column II A. Co3+ i. 8 B.M. B. Cr…
Which one of the following ions exhibits d-d transition and paramagnetic as well? (NEET 2018)
The manganate and permanganate ions are tetrahedral, due to: (NEET 2019)
When neutral or faintly alkaline KMnO4 is treated with potassium iodide, iodide ion is converted into ‘X’. ‘X’ is (Odisha NEET 2019)
The calculated spin only magnetic moment o 2+ Cr ion is : (NEET 2020)
Philosopher’s wool when heated with BaO at 1100ºC gives the compound :
Spiegeleisen is an alloy of :
Assertion : Hg is the only metal that is liquid at 0ºC. Reason : It has a very high I.P. and weak metallic bond.
Assertion : Hg is the only metal that is liquid at 0ºC. Reason : It has a very high I.P. and weak metallic bond.