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Statement (A) : Gram formula mass of Calcium hydroxide is 74.1 grams
Statement (B) : Gram molecular mass of Calcium carbonate is 106 grams
Statement (C) : Gram molecular mass of water is 18 grams

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A and B are correct but C is incorrect

All the above statements are incorrect

All the above statements are correct

A and B are incorrect but C is correct

answer is A.

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Detailed Solution

$MW of q mole Ca {(OH)}_{2} = 1 \times Ca + 2 \times 0 + 2 \times H$

$= 1 \times 40 + 2 \times 16 + 2 \times 1$

=74

$GMW of 1 mole Ca {(OH)}_{2} = 74 g$

${CaCO}_{3} = 1 \times Ca + 1 \times C + 3 \times 0$

$= 1 \times 40 + 1 \times 12 + 3 \times 16$

=18

GMW of 1 mole $H_{2} O = 18 g$

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