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1. $H_{2} S O_{4}$

A. $10 c m^{3}$
B. $10 c m^{3}$
C. $10 c m^{3}$
D. $10 c m^{3}$

Answer: Option B

Explanation:

এখানে,

s1=0.25 M

v1= 20 cm3

s2=0.1 M

v2=?

s1v1 = s2v2

বা, 0.25×20 = 0.1×v2

বা, v2 = 50 cm3

অতএব, পানি যোগ করতে হবে= (50-20)=30cm3.

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