1
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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2
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]
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3
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Change Language
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)
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4
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
Change Language
The number of geometrical isomers possible in triamminetrinitrocobalt (III) is X and in trioxalatochromate (III) is Y. Then the value of X + Y is _______________.
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