1
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Change Language
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]
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2
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Out of Syllabus
Change Language
CO2 gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO2 adsorbed becomes 64 times when the pressure of CO2 is doubled. The value of n in the Freundlich isotherm equation is ____________ $$\times$$ 10$$-$$2. (Round off to the Nearest Integer)
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3
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Change Language
The conductivity of a weak acid HA of concentration 0.001 mol L$$-$$1 is 2.0 $$\times$$ 10$$-$$5 S cm$$-$$1. If $$\Lambda _m^o$$(HA) = 190 S cm2 mol$$-$$1, the ionization constant (Ka) of HA is equal to ______________ $$\times$$ 10$$-$$6. (Round off to the Nearest Integer)
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4
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Change Language
1.46 g of a biopolymer dissolved in a 100 mL water at 300 K exerted an osmotic pressure of 2.42 $$\times$$ 10$$-$$3 bar.

The molar mass of the biopolymer is _____________ $$\times$$ 104 g mol$$-$$1. (Round off to the Nearest Integer)

[Use : R = 0.083 L bar mol$$-$$1 K$$-$$1]
Your input ____
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