1
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
The density of NaOH solution is 1.2 g cm$$-$$3. The molality of this solution is _____________ m. (Round off to the Nearest Integer)

[Use : Atomic mass : Na : 23.0 u, O : 16.0 u, H : 1.0 u, Density of H2O : 1.0 g cm$$-$$3]
2
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
An organic compound is subjected to chlorination to get compound A using 5.0 g of chlorine. When 0.5 g of compound A is reacted with AgNO3 [Carius Method], the percentage of chlorine in compound A is ____________ when it forms 0.3849 g of AgCl. (Round off to the Nearest Integer)

(Atomic masses of Ag and Cl are 107.87 and 35.5 respectively)
3
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
The number of significant figures in 0.00340 is ____________.
4
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
0.8 g of an organic compound was analyzed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be 42%, then ______________ mL of 1 M H2SO4 would have been neutralized by the ammonia evolved during the analysis.
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