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What are fermentation reactions?

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Differentiate between reactants and products?

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Write about CFCs?

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What are the effects of global warming?

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How sulphur dioxide is produced?

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On the basis of energy changes, how many types of chemical reactions are?

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How can we use ammonium hydroxide in daily life?How can we use ammonium hydroxide in daily life?

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Which are the main air pollutants?

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Name the required material for greenhouse?

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What are the main sources of air pollutants?

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Which type of reaction occur by the ignition of dynamite and gunpowder?

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How rain water becomes acidic?

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Write two uses of salts in human body.

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Which method is used to balance the unbalanced equations?

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How nitric acid is used?

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How burning in chemical reaction is useful for us?

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From how many sources acids are obtained? Name them

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Which human activities are affecting the enviroment badly?

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Explain the properties of bases/alkalis.Also give uses of calcium hydroxide?

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Write a detailed note on pH scale

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