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Q.

Which one of the following materials will shine?


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a

Plastic toy and wood table

b

Glass jar and steel spoon

c

Rubber ball and plastic chair

d

Tree leaves and stem 

answer is B.

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Detailed Solution

Glass jar and steel spoon will shine.
Plastic toys, chairs, rubber balls, and wood tables are objects made of plastic, rubber and wood, respectively, so they are non-metals, not shiny, and do not possess lustre properties. Tree leaves and stems are opaque objects. For an object to shine, it must have a good reflecting capacity of light or have metallic properties. Glass is a good reflector of light, and steel has metallic properties, so they shine.
 
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