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This among the following elements has the tendency to form covalent compounds: (1) Ba (2) Be
The energy of the electron in the first orbit of He + is -871.6x 10 -20 J . The energy of the electron in the first orbit of hydrogen would be : (1) -871.6 x10 -20 J
Q. Explain: Vulcanization of rubber is necessary. Ans. Importance of vulcanization of rubber: 1. Vulcanization makes cross-links between the long unsaturat
environmental pollution caused by nitrogen
name the silicon present compound and their uses
Explain Ethanolysis Ethanolysis of the acetal linkage occurs in ethanol just as hydrolysis occurs in water. An ethyl pyranoside is also produced from the glucose residue at th
Explain heavy water? Ans) Isotopes of H 2 O, D 2 O
why digonal relationship made
how to balnce electrically.
a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.
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