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एक विलेय में निश्चित आयतन में ज्ञात नॉर्मलता का मानक विलयन बनाने के लिये आवश्यक मात्रा W का मान होगा-
A. `W=(NEV)/(1000)`
B. `W=0.01NECV`
C. `W=(NE)/(1000V)`
D. `W=(0.01E)/(V).`

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Correct Answer - A
मानले N नॉर्मलता का V ml विलयन बनाना है . नॉर्मलता `xx ` तुल्यांकी भार = भार/लीटर
`N xxE =NE//"Lite"`
`because 1000 ml` में `N xxE` ग्राम विलेय घोलना है
`because1000 ml` में `N xx E ` ग्राम विलेय घोलना है
`therefore V ml` में `(NxxE xxV)/(1000)` ग्राम विलेय घोलेंगे .

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