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
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
