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JEE Main 20 July 2021 Shift 1 Solved Paper

Section: Chemistry
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Question : 52 of 90
 
Marks: +1, -0
250mL of 0.5MNaOH was added to 500mL of 1MHCl. The number of unreacted HCl molecules in the solution after complete reaction is _______ ×1021.
(Nearest integer)
(NA=6.022×1023)
[20 Jul 2021 Shift 1]
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