Chemistry When iron rusts, its weight Decreases Increases First increases and then decreases Remains the same Decreases Increases First increases and then decreases Remains the same ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is oxygen methane helium ozone oxygen methane helium ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a cause for present global warming and climate change ? Deforstation CFC emission Carbondioxide emission Methane emission Deforstation CFC emission Carbondioxide emission Methane emission ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is ozone depleting pesticide ? Benzene D.T. Methyl bromide Ethylene ozonide Benzene D.T. Methyl bromide Ethylene ozonide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Muddy water is treated with alum in purification process, itis termed as : Adsorption Coagulation Absorption Emulsification Adsorption Coagulation Absorption Emulsification ANSWER DOWNLOAD EXAMIANS APP
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