1. A:Gallium and caesium will melt if we keep them on our palm.
R:Gallium and caesium have very low, melting points.
2. A:Oxidising-reducing reactions are some of the most common chemical means to break-down molecules.
R: Simple diffusion will meet the requirements of all the cells.
Assertion and reason
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1. Both A and R are true and R is the correct explanation of A.
2. A is true and R is false.
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