1
JEE Advanced 2019 Paper 1 Offline
Numerical
+3
-0
Change Language
For the following reaction, the equilibrium constant Kc at 298 K is 1.6 $$ \times $$ 1017.

Fe2+(aq) + S2-(aq) ⇌ FeS(s)

When equal volumes of

0.06 M Fe2+(aq) and 0.2 M S2$$ - $$(aq)

solutions are mixed, the equilibrium concentration of Fe2+(aq) is found by Y $$ \times $$ 10$$ - $$17 M. The value of Y is .................
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2
JEE Advanced 2019 Paper 1 Offline
Numerical
+3
-0
Change Language
At 143 K, the reaction of XeF4 with O2F2 produces a xenon compound Y. The total number of lone pair(s) of electrons present on the whole molecule of Y is .................
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3
JEE Advanced 2019 Paper 1 Offline
Numerical
+3
-0
Change Language
Schemes 1 and 2 describe the conversion of P to Q and R to S, respectively. Scheme 3 describes the synthesis of T from Q and S. The total number of Br atoms in a molecule of T is .................

JEE Advanced 2019 Paper 1 Offline Chemistry - Compounds Containing Nitrogen Question 22 English
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4
JEE Advanced 2019 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1
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Let S be the set of all complex numbers z satisfying $$\left| {z - 2 + i} \right| \ge \sqrt 5 $$. If the complex number z0 is such that $${1 \over {\left| {{z_0} - 1} \right|}}$$ is the maximum of the set $$\left\{ {{1 \over {\left| {{z_0} - 1} \right|}}:z \in S} \right\}$$, then the principal argument of $${{4 - {z_0} - {{\overline z }_0}} \over {{z_0} - {{\overline z }_0} + 2i}}$$ is
A
$${\pi \over 4}$$
B
$${3\pi \over 4}$$
C
$$ - $$$${\pi \over 2}$$
D
$${\pi \over 2}$$
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