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Question

X and Y chemically react to form a new product Z.

X+Y→Z

The masses of X and Y are 5 g and 6 g respectively. The mass of Z is ___ g.


A

5

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B
6
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C
10
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D
11
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Solution

The correct option is D 11

According to the law of conservation of mass, the total mass of a given system, before and after the reaction remains the same. So the mass of Z is 11 gm i.e. 5 g + 6 g.


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