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For ns orbital, the magnetic quantum number has value:
(1) 2
(2) 4
(3) - 1
(4) 0
Ans:0
how can we refine metal by zone refining process
Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans: Direction
If 4.5 grams of Nitrogen reacted with 2.6 grams of Hydrogen, identify the following: Limiting Reactant- Excess Reactant- and Theoretical Yield:
effeciency of plate of chromotography
reasons of failure
Calculate the pH of 0.100 L of a buffer solution that is 0.22M in HF and 0.53M in NaF
If n= 3 , then the value of which is incorrect: (1) 0 (2) 1 (3) 2 (4)3 Ans: 3
The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10 (2) 1 (3) 0 (4)5 Ans: 0
Anomalous behaviour of aluminium
Uncertainty in position of a 0.25 g particle is 10 -5 . Uncertainty of velocity ( h = 6.6 x 10 -34 Js) is: (1) 1.2 x 10 34 (2) 2.1 x 10 -29 (3) 1.6 x 1
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