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what is alchemy
Posted Date: 11/2/2012 9:08:46 PM | Location : Australia
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The shape of 2p orbital is, The shape of 2p orbital is ; (1) Spherical...
The shape of 2p orbital is ; (1) Spherical (2) Ellipsoidal (3) Dumb-bell (4)Pyramidal ans: Dumb-bell
Atoms are bombarded with alpha particles & out undeflected, When atoms are ...
When atoms are bombarded with alpha particles, only a few in n, others pass out undeflected. This is because : (1) The nucleus occupies much smaller volume compared to the volu
Units of hardness and their relationship, Q. Write short note on units of...
Q. Write short note on units of hardness and their relationship. Sol. Units of hardness and their relationship. (1) Parts Per million (ppm): It is defined as t
Orgenic, libermann nitroso reaction
libermann nitroso reaction
Chromotographic method, chromotographic method explain
chromotographic method explain
An element has electronic configuration & atomic weight, An element has ele...
An element has electronic configuration 2, 8, 18, 1. If its atomic weight is 63, then how many neutrons will be present in its nucleus: (1) 30 (2) 32 (3) 34
The quantum numbers for the outermost electron of an element, The quantum n...
The quantum numbers for the outermost electron of an element are given below as n= 1, l=0, m=0, s = 1/2 . The atoms is: (1) Lithium (2) Beryllium (3) Hydrogen (4)
Main physical properties of hydrogen sulphide, Question 1: (i) What ar...
Question 1: (i) What are the main physical properties of hydrogen sulphide? (ii) Which occupational group of workers is often exposed to hydrogen sulphide? (iii) O
Illustrate ionic bonds or electrovalent bond, Q. Illustrate Ionic Bonds or ...
Q. Illustrate Ionic Bonds or electrovalent bond? Ans. An ionic bond (also called an electrovalent bond) is the attraction between oppositely charged ions. Elements from o
Amines - nitrogen containing compounds, Amines - Nitrogen Containing Compou...
Amines - Nitrogen Containing Compounds 1. Amines are observed like derivatives of ammonia where one, two or all three hydrogen atoms are changed by alkyl or aryl group. 2. A
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