Question

how much water be added into water 500 gram of the 30 % salt solution in order to decrease it consentration 20 %​

Answer 1

Answer:

Part of typical Hindi Letter is similar to English Letters with date & place, salutation, main message, compliementry closure, signature and address. Please not that there are specific words for salutation (मान्यवर, महोदय) and closure ( भवदीय, आज्ञाकारी etc) just like dear sir, yours friend/sincerely etc in English.31-Jan-

Answer 2

Correct option is

D

4

Mass of solute = 20 g

Volume of solution = 500 ml

Mass by volume percentage =

Volume of solution

Mass of solute×100

=

500

20×100

=4%

Hence, the correct option is D.