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Q.

Which one of the following statements is / are correct ?

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a

One mole of CH4 and NH4 at   NTP occupies same volume 

b

One gram mole of silver equals 108/6.023 × 1023g

c

One gram mole of CO2 is 6.023 × 1023 times heavier than one molecule of CO2

d

One mole Ag weighs more than that of two moles of Ca

answer is A, C, D.

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Detailed Solution

(A) 1 mole and 17 gr (1 mole) NH3 occupies same volume

(B) 1gr. Mole of Ag = 108 gr

(C) wt of 1 mole CO2 = wt of 1 moleucule CO2 × NA

(D) 1 mole Ag = 108 gr ; 2 mole Ca = 80 gr

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Which one of the following statements is / are correct ?