An iron rod changed into iron oxide by rusting. Guess how the weights before and after rusting of the iron rod are changed,
if a = weight of the iron rod
b = weight of the iron oxide
A) a > b
B) b > a
C) a = b
D) we cannot say
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20. A coconut of mass \( 2 Kg \) is falling from a coconut free of height \( 10 m \). Find the potential energy, kinetic energy and total energy at the following points. \( \left( g =10 m / s ^{2}\right) \) a) Before falling from the coconut tree. b) Just before hilting the ground. c) At a height \( 4 m \) from the ground. d) Which law is evident from this example?
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Rusting of iron is ……………..
B) oxidation process
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B) Square only
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Correct Answer - 20
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Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of ___________
Correct Answer - Zinc
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State two ways to prevent the rusting of iron.
Rusting of iron can be prevented: (i) By painting. (ii) By applying grease or oil.
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What is done so to prevent rusting or iron windows and iron doors of your house?
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A simole oxide of carbon and that another non-metal have the same Cp/Cv ratio but a difference of 2 in their molecular weights. The other non-metal co
`N_2` is less reactive at room temperature due to presence of triple bond between two N atoms `NcongN` Hence bond Dissociation energy `N_2` is bery high.
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