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Subject :NSO    Class : Class 7
The table below shows the colours and solubilities of four solids in water.

f104.eps

Solid

Colour

Solubility in water

W

Blue

Insoluble

X

Blue

Soluble

Y

White

Insoluble

Z

White

Soluble

A mixture containing two solids is added to excess water, stirred and filtered.

A blue filtrate and a white residue are obtained. Which two solids are present in the mixture?

(A) W and X

(B) W and Y

(C) X and Y

(D) X and Z


Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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