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Q. Explain Dalton’s atomic theory? The atomic theory In 1808 John Dalton projected a theory to explain the laws of conservation of matter definite proportions and multiple prop
Six protons are found in the nucleus of : (1) Boron (2) Lithium (3) Carbon (4 )Helium Ans: Carbon
Which of the following are isoelectronic species I= CH + 3 , II-NH 2 , III- NH + 4 , IV-NH 3 (1) I, II, III (2) II, III, IV (3) I, II
A medicine dropper is an instrument used to calculate small amount of liquids, usually in milligrams.
Elements of Group 13 are namely, boron, aluminium, gallium, indium and, thallium. While studying the alkali and alkaline earth metals, you have seen that all the elements of these
Name the most basic amino acid a) The most basic amino acid is arginine. It has the highest isoelectric point. b) Glycine is not chiral and therefore it cannot be optically
Q. Explain Distillation in purification of metals? Metals with low boiling points, such as cadmium, zinc and mercury will be purified by distillation. The distillation is gener
what are the composition of fats and oils?
Q. What are the uses of Tellurium? Tellurium is used primarily as an additive to steel to increase its ductility. It is also used as an additive to some catalysts, used in cra
how can they used and what its side effects?
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