1.

Statement (I): Water containing less than 2000 ppm if dissolved solids can generally be used satisfactory for making concrete.Statement (II): The presence of any of zinc, manganese, tin, copper or lead reduces the strength of concrete considerably.

A. Both Statement (I) an Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
C. Statement (I) is true but Statement (II) is false
D. Statement (I) is false but Statement (II) is true
Answer» C. Statement (I) is true but Statement (II) is false


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