Chemistry QuestionsD- And F-block Elements Questions for CBSE Class 12th

D- And F-block Elements Questions for CBSE Class 12th

When chromite ore is heated with N a 2 C O 3 powder in the presence of air

In the form of dichromate, Cr(VI) is a strong oxidizing agent in acidic medium but Mo(VI) in M o O 3 and W(VI) in WO3 are not because

    Fill Out the Form for Expert Academic Guidance!



    +91


    Live ClassesBooksTest SeriesSelf Learning




    Verify OTP Code (required)

    I agree to the terms and conditions and privacy policy.

    The number of compounds which on heating gives oxygen as a product HgO, MnO 2 , Pb 3 O 4 , KMnO 4 , K 2 Cr 2 O 7 , H 2 O 2 , NH 4 ClO 4 , LiNO 3

    Though the outer electronic configuration is same for the elements in 1B or 11th group Cu, Ag, & Au, gold and silver are less reactive than copper because

    Out of the following, how many of them have magnetic moment value 2 12 BM. Mn 2 + , Mn + , Re 2 + , Re + , Tc + , Cr , W

    How many of the following pairs of ions can be separated by H 2 S in dilute HCl ? Bi 3+ and Sn 4+ , Al 3+ and Hg 2+ , Cd 2+ and Zn 2+ , Zn 2+ and Cu 2+ , As 3+ and Sb 3+

    Considering H 2 O as a weak field ligand, the number of unpaired electrons in [ Mn H 2 O 6 ] 2 + is

    The Actinoid element which shows highest oxidation state among the following is

    Match the Column I with Column lI and mark the correct option from the given Codes. Column I Column II i. Zeigler-Natta catalyst p. Pt/PtO used in reduction ii. Contact process q. Polymerisation of ethylene iii. Fenton’s reagent r. Vanadium pentoxide iv. Adams catalyst s. Oxidation of alcohol to aldehyde t. Nickel

    Chat on WhatsApp Call Infinity Learn

      Talk to our academic expert!



      +91


      Live ClassesBooksTest SeriesSelf Learning




      Verify OTP Code (required)

      I agree to the terms and conditions and privacy policy.