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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
The positive charge of an atom is: (1) Spread all over the atom (2) Distributed around the nucleus (3)Concentrated at the nucleus (4) All of these Ans: Concentr
principle and application
What are photochemical reactions? Explain the mechanism of the photo- chemical reaction occurring among hydrogen and chlorine gas.
explanition
What is the difference between a theory and a hypothesis? What is the difference between a hypothesis and a law? Is there a sequential move from one to another, amongst law, theory
formula of acetic acid
Boron The only nonmetallic element in group 13, boron has a strong tendency to covalent bonding. It's lonely complex structural chemistry arises from the (2 s )2(2 p )1 configur
at what temperature centigrade will the volume of a gas at 0 degrees Celsius double itself pressure remaining constant
0.45 g of anhydrous oxalic acid is reacted with 50 ml of KMNO4 . Then normality of KMnO4 is??
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