1
JEE Main 2021 (Online) 16th March Morning Shift
Numerical
+4
-1
Change Language
Two salts A2X and MX have the same value of solubility product of 4.0 $$\times$$ 10$$-$$12. The ratio of their molar solubilities i.e. $${{S({A_2}X)} \over {S(MX)}}$$ = __________. (Round off to the Nearest Integer)
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2
JEE Main 2021 (Online) 16th March Morning Shift
Numerical
+4
-1
Change Language
Complete combustion of 750 g of an organic compound provides 420 g of CO2 and 210 g of H2O. The percentage composition of carbon and hydrogen in organic compound is 15.3 and ___________ respectively. (Round off to the Nearest Integer).
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3
JEE Main 2021 (Online) 16th March Morning Shift
Numerical
+4
-1
Change Language
For the reaction $$A(g) \rightleftharpoons B(g)$$ at 495 K, $$\Delta$$rG$$^\circ$$ = $$-$$9.478 kJ mol$$-$$1.
If we start the reaction in a closed container at 495 K with 22 millimoles of A, the amount of B in the equilibrium mixture is ____________ millimoles.
(Round off to the Nearest Integer). [R = 8.314 J mol$$-$$1 K$$-$$1; ln 10 = 2.303]
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4
JEE Main 2021 (Online) 16th March Morning Shift
Numerical
+4
-1
Change Language
$$2MnO_4^ - + b{C_2}O_4^{2 - } + c{H^ + } \to xM{n^{2 + }} + yC{O_2} + z{H_2}O$$

If the above equation is balanced with integer coefficients, the value of c is ___________. (Round off to the Nearest Integer).
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