Please select a subject first
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Photosynthesis is a chemical reaction that takes place in the presence of ______.
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_____ is the basic material to manufacture urea.
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________ is a chemical substance which alters the speed of a chemical reaction.
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Mention the various conditions required for a chemical reaction to occur.
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What is the role of a catalyst in a chemical reaction?
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Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
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The process of conversion of iron into hydrated form of oxides is called _______.
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Which of the following statements made by Dalton has not undergone any change?
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In all atoms of an element
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______ is the smallest particle of an element.
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An element is composed of ______ atoms.
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Define the term ions or radicals.
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Water is colourless, odourless and _______.
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Acids are ________ in taste.
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In acidic solutions blue litmus changes into ______ colour.
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Acid mixed with base forms ______.
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The word sour refers to ______ in Latin.
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Most of the acids are not soluble in water.
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