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What are primary colours?

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Why it is advised to wear white or light colored clothes during hot summer days?

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State the term convection?

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Define secondary colours

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State the laws of refraction?

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How does vegetables oil change into fat?Also write down its equation ?

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Explain convection currents in liquid with the help of an experiment.

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A good absorber of heat is a good radiator of heat. Prove it by an experiment.

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Write a note on the following:

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Write an activity to obtain a spectrum of colours?

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Describe how periscope works by using the principal of total internal reflection?

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Design an activity to explain the effects of refraction?

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Describe everyday application of radiation of heat.

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Describe the physical and chemical changes taking place in enviroment

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Describe simple process for manufacturing of plastics.

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Describe harmful effects of improper use of fertilizers.

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Explain critical angle with the help of diagram?

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Design an activity to observe conduction.

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Design an activity for dissolving of table salt into water?

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Describe the refraction in different mediums?

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