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JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
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The photoelectric current from Na (Work function, w0 = 2.3 eV) is stopped by the output voltage of the cell
Pt(s) | H2 (g, 1 Bar) | HCl (aq., pH =1) | AgCl(s) | Ag(s).
The pH of aq. HCl required to stop the photoelectric current form K(w0 = 2.25 eV), all other conditions remaining the same, is _______ $$ \times $$ 10-2 (to the nearest integer).

Given, 2.303$${{RT} \over F}$$ = 0.06 V;
$$E_{AgCl|Ag|C{l^ - }}^0$$ = 0.22 V
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2
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
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The total number of monohalogenated organic products in the following (including stereoisomers) reaction is ______. JEE Main 2020 (Online) 3rd September Morning Slot Chemistry - Hydrocarbons Question 98 English
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3
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
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The volume strength of 8.9 M H2O2 solution calculated at 273 K and 1 atm is ______. (R = 0.0821 L atm K-1 mol-1) (rounded off ot the nearest integer)
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4
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
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The mole fraction of glucose (C6H12O6 ) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is _______.
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