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Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il
what is the defination of interstitial?
A completely filled d -orbital ( d 10 ): (1) Spherically symmetrical (2) Has octahedral symmetry (3) Has tetrahedral symmetry (4) Depends on the atom Ans: Spherical
What is basically Gibb''s free energy change?Why it is required and How is related to spontaneity of a chemical reaction ? Ans) The energy associated with a chemical reaction t
The postulate of Bohr theory that electrons jump from one orbit to the other, rather than flow is according to : (1) The quantisation concept (2) The wave nature of elect
are you a pancake
5 points on nickel plating
Generally ionic bonds are stronger than covalent bonds. This is because in ionic bonds, electrostatic forces of attractin are involved. The positive ion (cation) and the negative
In Balmer series of hydrogen atom spectrum which electronic transition causes third line: (1) Fifth Bohr orbit to second one (2) Fifth Bohr orbit to first one (3) Fourth
What is chemical formula for Borax? Ans) Chemical formulae of borax is (Na 2 ) B 4 (O 7 ) .10(H 2 ) O
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