Please select a subject first
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______ is used to separate gravel from the sand at a construction site.
Concept: undefined >> undefined
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Pure rava, when adultered with wheat flour, is separated by ______.
Concept: undefined >> undefined
Butter from curd is separated by sedimentation.
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What method will you employ to separate cheese (paneer) from milk? Explain.
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Bacteria are very small _______ microorganism.
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All bacteria have flagella.
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Circle the odd one out. Give reason for your choice
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What kind of a change is associated with decaying of a plants?
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What happens when cane sugar is strongly heated? Mention any two changes in it.
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______ gas causes tears in our eyes while cutting onions.
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NPK are the primary nutrients for plants.
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In washing machines, water is squeezed out from clothes and they are dried. This method is called ______.
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The principle of ______ is used in washing machines.
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The changes in which new substance with new chemical properties are formed are ______.
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Chemical change is a temporary change.
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Rusting of Iron: undesirable change:: Dead plants turn into manure: ______.
Concept: undefined >> undefined
Silver articles turning black: ______:: Boiling of H2O: physical change ______.
Concept: undefined >> undefined
______ change results in the change of the substance.
Concept: undefined >> undefined
The percentage composition of Nitrogen in Ureas is ______.
Concept: undefined >> undefined
