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If molecular mass and atomic mass of sulphur are 256 and 32 respectively, its atomicity is: (1) 2 (2) 8 (3 )4 ( 4)16 Ans: 8
The order of filling of electrons in the orbitals of an atom will be : (1) 3d, 4s, 4p, 4d, 5s, (2) 4s, 3d, 4p, 5s, 4d (3) 5s, 4p, 3d, 4d, 5s
Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.
what are the chemical poperties of p-block elements ?
polonium crystallizes in a simple cubic unit cell with an edge length of 3.36A. 1. what is the volume of the unit cell? 2. what is the volume of atom in the unit cell? 3. what i
The number of species participating in the slowest step of the reaction is known as molecularity of the reaction.
The number of electrons that can be accommodated in dz 2 orbital: (1) 10 (2) 1 (3) 4 (4) 2 Ans: 2
Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d have the same energy (2) 4s has a higher energy than 3d (3)4s 1 is
fajan rule state that large size highly negative charged ion form covalent bond
How can decrease alcohlic acidity in wheat flour.
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