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Answers
Q.1
A
1.zinc
the process is known as galvanisation or galvanization,the most commonly used method is hot dil galvanizing,in which steel or iron sections are submerged in a bath of molten zinc.
2.oxidation
3.electrolysis
during this process the water is reduced into hydrogen(H) and oxygen(O),the positive ions move to cathode and negative ions move to anode and hydogen gas is formed at cathode.
4.double displacement
in this reaction zinc displaces barium to form zinc chloride and barium takes place of zinc to form barium sulphate.
5.dioptre
1 dioptre= 1/length in metre
B
1.wavelength
the wavelength is directly proportional to the refraction
2.absolute humidity
3.latent heat of fusion
4.oxidation
oxidation means losing one or more electrons therefore it is oxidation reaction
5.direction