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Iso-electronic species is:
(1) F-,O-2
(2) F-, O
(3) F-, O +
(4) F-, O+2
Ans: F-,O-2
Pig iron is cast iron with a very high carbon content: 4% by weight or more. Cast iron has at least 2% carbon by weight. Less than that, and it''s steel. Cast iron and pig iron are
what are the differences between positive and negative mesomeric effect
Application of mesomeric effect (A) Low reactivity of vinyl halides and aryl, (B) The acidic behavior of carboxylic acids, (C) Basic character comparison of aniline and e
The maximum probability of finding an electron in the d xy orbital is: (1) Along the x-axis (2) Along the y-axis (3) At an angle of 45 0 degree from the x and y
What r the requirements for a good refractory material
In covalency : (1) Electrons are transferred (2) Electrons are equally shared (3) The electron of one atom are shared between two atoms (4) None of the above Ans: E
when these are combined...what do they make? And what is it used for?
Methods of showing concentrations of solutions The concentration of a solution can be provided in various ways. (A) Percent by mass (B) Molarity (C) molality (D) Mo
1. For what fraction of annual CO 2 emissions from fossil fuel burning are automobiles responsible? 2. A 1000-kg car travels 1.6 × 10 4 km/yr. What is the ratio of the mass of
Ask qwhy is 5-bromovanillin the major productuestion #Minimum 100 words accepted#
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