1
JEE Main 2020 (Online) 2nd September Morning Slot
Numerical
+4
-1
Out of Syllabus
Change Language
The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between $$\log {x \over m}$$ and log p gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of $${x \over m}$$ at a pressure of 4 atm is :
(Given log 3 = 0.4771)
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2
JEE Main 2020 (Online) 2nd September Morning Slot
Numerical
+4
-0
Change Language
The Gibbs change (in J) for the given reaction at
[Cu2+] = [Sn2+] = 1 M and 298K is :

Cu(s) + Sn2+(aq.) $$ \to $$ Cu2+(aq.) + Sn(s);

($$E_{S{n^{2 + }}|Sn}^0 = - 0.16\,V$$,
$$E_{C{u^{2 + }}|Cu}^0 = 0.34\,V$$)
Take F = 96500 C mol–1)
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3
JEE Main 2020 (Online) 2nd September Morning Slot
Numerical
+4
-0
Change Language
The number of chiral carbons present in the molecule given below is _____ . JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Basics of Organic Chemistry Question 124 English
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4
JEE Main 2020 (Online) 2nd September Morning Slot
Numerical
+4
-0
Change Language
The internal energy change (in J) When 90 g of water undergoes complete evaporation at 100oC is ____________.

(Given : $$\Delta $$Hvap for water at 373 K = 41 kJ/mol,
R = 8.314 JK–1 mol–1)
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